Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
499
FWUS45 KTFX 202201
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
400 PM MDT Sun Sep 20 2026
...Glacier National Park/Marias Pass...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW CL CL FW CL CL CL FW FW FW FW FW FW SC SC BK
Cloud Cover (%) 10 10 5 5 5 0 0 5 10 10 10 5 20 20 25 35 50
Temperature 61 51 48 46 45 49 60 63 61 51 49 48 48 50 60 62 60
Min/Max Temp 44 64 46 62
Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 6 8 8 9 10 10 10 10 8 10 11 11 10 10 12 12 9
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.6 10.3 9.8 9.5 9.3 9.3 9.3 9.6 9.7 9.7 9.7 9.6 9.4 9.2 9.6 10.1 10.3
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bob Marshall/Scapegoat Wilderness...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW CL CL CL CL CL CL FW FW FW FW FW FW SC SC BK
Cloud Cover (%) 20 10 5 5 5 5 0 5 10 10 10 5 15 15 30 45 60
Temperature 60 50 46 45 43 47 61 65 64 52 48 46 45 49 62 65 62
Min/Max Temp 42 66 44 65
Wind Dir NW W SW W W SW SW SW SW W SW SW SW SW SW W W
Wind (mph) 4 3 4 4 4 5 4 5 4 4 5 5 5 5 5 6 5
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 10.7 10.1 9.7 9.5 9.4 9.5 10.3 10.4 10.3 10.1 10.1 10.1 9.7 10.1 10.5 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Nevada Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW CL FW FW CL CL CL FW FW FW FW FW FW SC SC BK
Cloud Cover (%) 15 10 5 5 5 5 0 5 10 15 10 10 20 15 30 40 55
Temperature 61 52 49 46 44 47 60 66 65 54 51 48 46 49 63 67 64
Min/Max Temp 44 67 45 67
Wind Dir SW SW SW SW SW SW S SW SW SW SW SW SW SW S SW W
Wind (mph) 3 3 4 4 4 4 5 5 3 4 4 4 4 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 10.7 10.3 10.0 9.7 9.5 9.5 10.1 10.3 10.4 10.4 10.4 10.4 10.1 10.4 10.7 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Elkhorn/Boulder Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW CL CL FW FW FW FW FW FW SC SC SC BK
Cloud Cover (%) 10 10 5 10 5 5 0 10 10 10 15 10 25 25 35 45 55
Temperature 57 48 45 43 42 46 58 63 62 50 48 46 44 48 61 64 62
Min/Max Temp 40 64 42 64
Wind Dir N NW SW SW SW S S S SE SW SW SW SW SW S SW W
Wind (mph) 4 3 4 4 4 4 5 5 3 4 4 4 4 4 4 5 3
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.6 10.4 10.2 10.0 9.7 9.5 9.8 10.6 11.0 10.9 10.7 10.5 10.5 10.4 10.6 10.9 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Big Belt Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW FW CL FW FW FW FW FW FW FW SC SC SC
Cloud Cover (%) 5 5 5 10 5 10 0 5 5 10 15 20 25 15 30 35 45
Temperature 59 51 49 46 45 48 59 65 64 54 51 48 47 50 62 67 65
Min/Max Temp 44 65 45 67
Wind Dir N E SE S S S S SW S SE SE S S S SW SW SW
Wind (mph) 3 3 4 5 5 6 6 5 3 5 6 6 5 5 5 5 3
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.4 10.3 10.1 9.8 9.6 9.5 9.5 9.8 10.1 10.2 10.2 10.3 10.2 10.2 10.3 10.4 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Little Belt Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW FW CL FW FW FW FW FW SC FW FW SC SC
Cloud Cover (%) 25 15 15 20 15 10 0 10 10 10 20 20 30 10 20 35 45
Temperature 58 48 45 43 43 49 62 66 64 52 49 47 47 52 66 68 66
Min/Max Temp 41 66 45 68
Wind Dir NE SE S SW SW S SW SW S S S SW SW SW SW SW SW
Wind (mph) 4 4 6 5 5 5 4 5 5 9 9 6 6 5 5 6 4
Wind Gust (mph) 23 25 29
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.5 9.9 9.5 9.4 9.2 9.1 9.5 10.4 10.8 10.4 9.9 9.9 10.0 9.9 10.2 10.7 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Highwood Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW CL CL FW FW FW FW FW SC FW FW FW SC
Cloud Cover (%) 10 10 10 10 10 0 0 5 10 5 10 15 30 5 10 20 45
Temperature 61 53 49 49 48 53 64 69 67 57 54 53 53 57 68 71 68
Min/Max Temp 47 69 51 71
Wind Dir E SE S SW SW S S S SE S SW SW SW SW W NW N
Wind (mph) 4 9 6 5 4 3 3 4 5 6 6 6 5 4 3 4 3
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 9.8 9.2 9.0 9.0 8.9 8.9 9.0 9.8 10.4 10.0 9.9 9.8 9.8 9.7 10.0 10.6 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Snowy/Judith Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC SC SC SC SC SC FW FW FW FW FW FW SC FW FW FW SC
Cloud Cover (%) 40 40 40 45 35 35 15 10 10 15 20 20 35 10 5 20 30
Temperature 56 49 47 46 44 50 62 66 64 54 51 49 47 55 69 72 69
Min/Max Temp 42 67 45 72
Wind Dir NE SE S S S S S SE SE S S S SW S S SW SE
Wind (mph) 4 5 5 5 4 4 5 5 9 11 9 6 5 4 3 4 4
Wind Gust (mph) 26 29
Precip Prob (%) 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.7 10.4 10.1 9.8 9.5 9.3 9.4 9.8 10.0 10.1 10.0 9.8 9.7 9.7 9.9 10.4 10.7
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bears Paw Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW SC BK BK BK BK SC CL FW SC SC SC BK FW FW FW SC
Cloud Cover (%) 25 40 60 60 55 55 25 5 10 30 40 35 65 15 5 15 40
Temperature 60 50 48 48 46 50 60 66 64 53 51 49 47 53 68 71 68
Min/Max Temp 44 66 45 71
Wind Dir SE SE SE S S SE SE SE SE SE SE S S S S SW S
Wind (mph) 5 8 6 6 6 6 9 9 10 12 9 5 4 4 4 4 2
Wind Gust (mph) 26
Precip Prob (%) 0 0 5 5 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 9.6 9.1 9.0 9.0 8.9 8.9 9.0 9.2 9.2 9.3 9.4 9.6 9.6 9.5 9.7 9.9 10.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Castle/Crazy Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC FW SC SC SC FW CL FW FW FW SC SC SC FW FW SC SC
Cloud Cover (%) 40 20 25 30 25 25 5 10 10 20 35 30 45 15 25 30 45
Temperature 56 49 45 43 42 46 59 64 62 51 47 45 44 49 63 66 64
Min/Max Temp 40 64 42 66
Wind Dir NW E E S S SW SW SW SE SE SE S SW SW SW SW W
Wind (mph) 4 4 4 4 4 4 5 5 4 4 4 4 4 5 6 6 4
Wind Gust (mph)
Precip Prob (%) 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.1 10.7 9.9 9.7 9.5 9.5 9.7 10.4 10.6 10.3 10.0 10.0 10.1 10.0 10.3 10.8 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bridger Range...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW FW CL FW FW FW FW FW SC FW FW SC SC
Cloud Cover (%) 20 15 15 20 20 20 5 5 10 10 25 20 30 20 25 25 50
Temperature 55 48 45 43 42 46 58 63 62 51 47 45 44 48 62 66 64
Min/Max Temp 40 64 42 66
Wind Dir NW SE SE S S S SW SW SE SE SE S S S SW W W
Wind (mph) 3 3 3 3 3 3 3 3 2 5 4 3 3 3 3 4 2
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.9 10.7 10.2 9.9 9.7 9.6 9.8 10.5 10.7 10.4 10.4 10.4 10.3 10.3 10.5 10.7 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Madison Range/Spanish Peaks...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC FW FW FW FW FW FW FW SC FW FW SC BK SC SC SC BK
Cloud Cover (%) 35 20 15 15 15 10 10 15 25 20 15 35 50 35 30 45 65
Temperature 50 43 40 39 37 41 54 58 57 47 44 42 41 44 57 60 57
Min/Max Temp 35 59 39 60
Wind Dir NW N SW SW SW S SW SW SW S S SE SE S SW SW SW
Wind (mph) 5 3 3 3 3 4 3 4 3 5 6 6 5 6 4 6 5
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.9 10.7 10.6 10.4 10.2 10.0 10.5 11.3 11.5 11.3 11.1 10.7 10.5 10.4 10.7 11.1 11.3
Snow Density (%) 100 100 100 100 100 100 0 0 0 0 0 0 0 0 0 0 0
...Gallatin Range/Hyalite Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC FW FW FW FW FW CL FW SC FW FW FW SC SC SC SC BK
Cloud Cover (%) 30 20 10 10 10 10 5 20 35 20 15 25 50 35 30 45 65
Temperature 51 44 41 40 38 42 56 61 59 48 45 43 42 45 59 62 59
Min/Max Temp 36 61 40 62
Wind Dir NW S S S S S W NW NE S S S S S SW W W
Wind (mph) 5 4 5 5 4 5 3 4 4 5 8 6 6 6 3 5 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.7 10.6 10.5 10.3 10.1 9.8 10.4 11.3 11.6 11.3 11.1 10.9 10.6 10.5 10.6 11.1 11.3
Snow Density (%) 100 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Lionhead Range...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC SC FW FW FW FW FW FW FW FW FW SC BK SC SC SC BK
Cloud Cover (%) 45 30 20 20 20 20 10 10 15 15 20 35 50 30 25 45 65
Temperature 53 44 39 37 33 38 55 60 60 46 41 38 35 41 59 63 60
Min/Max Temp 31 62 33 64
Wind Dir W SW NE NE E NE SW SW SW S SE E E E SW SW SW
Wind (mph) 0 1 0 1 1 2 1 3 1 2 1 2 2 2 2 5 4
Wind Gust (mph)
Precip Prob (%) 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.2 11.0 10.8 10.6 10.4 10.2 10.4 10.9 11.1 10.9 11.0 11.0 10.6 10.5 10.6 11.2 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Tobacco Root Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW CL FW FW FW FW FW FW SC SC SC SC BK
Cloud Cover (%) 15 10 10 10 5 5 5 10 10 15 15 25 45 35 35 40 50
Temperature 52 45 43 42 40 44 54 59 57 48 46 45 43 47 57 60 58
Min/Max Temp 39 59 42 60
Wind Dir N NE N W W SW SW SW SE S SW SW SW SW SW W W
Wind (mph) 4 4 4 4 4 4 5 5 3 5 5 5 5 5 5 5 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.9 10.7 10.4 10.3 10.1 9.9 10.3 11.1 11.2 10.9 10.8 10.7 10.6 10.5 10.7 10.9 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Snowcrest/Gravelly/Ruby/Blacktail Ranges...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW CL FW FW FW FW FW SC SC SC SC SC BK
Cloud Cover (%) 25 15 15 15 10 5 10 15 20 15 25 35 50 35 35 45 70
Temperature 53 45 42 41 39 43 55 61 59 49 45 43 42 45 59 62 59
Min/Max Temp 37 61 40 62
Wind Dir N NE E S S S SW SW S S S SE S S S SW SW
Wind (mph) 6 5 4 4 4 4 4 5 4 6 8 6 6 6 5 6 6
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5 20
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 10.8 10.6 10.5 10.3 10.2 10.5 11.2 11.4 11.2 11.0 10.8 10.6 10.4 10.7 11.2 11.3
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Centennial Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC FW FW FW FW FW FW FW FW FW SC SC SC SC SC BK BK
Cloud Cover (%) 40 20 15 20 20 15 15 15 15 10 30 40 40 30 30 50 65
Temperature 52 45 42 39 38 40 54 59 58 48 45 43 41 43 57 61 58
Min/Max Temp 36 59 39 61
Wind Dir NW NE NE E NE SE S S S S E NE NE NE S SW S
Wind (mph) 4 4 2 3 4 4 3 5 4 3 3 4 5 5 4 8 8
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.2 11.0 10.7 10.6 10.4 10.2 10.5 11.2 11.3 10.9 10.6 10.6 10.4 10.3 10.7 11.3 11.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Anaconda/Highland Ranges...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW CL CL FW FW FW FW SC OV SC SC SC BK
Cloud Cover (%) 15 10 10 5 5 5 0 5 10 15 10 45 70 35 45 45 60
Temperature 57 47 44 42 40 43 55 62 61 50 47 44 43 45 58 62 60
Min/Max Temp 39 62 41 63
Wind Dir NW N E E SE S S SW W NE SE S S S S SW W
Wind (mph) 4 3 3 3 3 4 4 4 3 2 3 3 3 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 10.8 10.4 10.2 9.9 9.8 9.9 10.6 11.1 10.9 10.8 10.8 10.8 10.7 10.8 11.0 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Pioneer Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW CL CL FW FW FW FW SC BK SC SC SC BK
Cloud Cover (%) 20 15 10 10 5 5 5 5 20 15 15 40 60 35 40 45 60
Temperature 56 46 43 41 39 43 56 61 60 49 46 44 42 45 58 62 60
Min/Max Temp 38 61 41 62
Wind Dir N E SE S SW S SW SW SW S S SW SW SW SW SW W
Wind (mph) 4 3 3 3 3 3 4 5 3 3 4 3 3 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.2 11.1 10.7 10.3 9.9 9.8 10.2 11.0 11.3 11.2 11.0 10.8 10.7 10.8 11.0 11.1 11.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Beaverhead/Tendoy Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW FW FW FW FW FW CL FW FW FW SC SC BK SC SC SC BK
Cloud Cover (%) 15 15 10 10 10 5 5 10 15 15 30 50 60 45 40 50 65
Temperature 55 45 42 41 39 43 55 60 59 48 45 43 42 45 58 61 59
Min/Max Temp 37 61 40 61
Wind Dir N NE SE S S S S SW SW S S S S S SW SW SW
Wind (mph) 5 3 4 4 4 4 4 5 4 5 6 5 5 5 4 6 6
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5 30
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.1 11.0 10.8 10.5 10.2 10.1 10.5 11.2 11.3 11.3 11.1 10.9 10.8 10.8 11.0 11.2 11.3
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Absoraka-Beartooth/Cooke City Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover OV SC SC SC FW SC FW FW SC FW FW FW SC FW FW SC BK
Cloud Cover (%) 70 35 30 30 20 25 5 20 30 25 15 15 40 20 20 45 70
Temperature 45 38 36 34 33 37 51 56 54 41 38 36 36 40 54 58 55
Min/Max Temp 31 56 34 58
Wind Dir N N NE W W SW SW SW SW SE SE SE S S SW SW SW
Wind (mph) 5 3 3 3 3 3 3 5 3 5 5 4 4 5 6 8 5
Wind Gust (mph)
Precip Prob (%) 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.2 11.0 10.8 10.6 10.4 10.2 10.9 11.4 11.6 11.5 11.1 10.8 10.8 10.7 10.9 11.1 11.4
Snow Density (%) 50 50 50 100 100 100 100 0 0 0 0 0 0 0 0 0 0
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC FW FW FW FW SC FW FW FW FW SC SC FW SC BK
Cloud Cover (%) 65 45 30 20 20 10 10 25 25 20 15 15 45 25 20 35 60
Temperature 47 42 40 39 38 43 54 57 54 45 44 43 42 47 58 60 57
Min/Max Temp 36 57 40 60
Wind Dir N NW SW SW SW SW NE NE SE S SW SW SW SW SW NW E
Wind (mph) 4 4 5 5 6 5 4 8 5 8 9 10 10 9 5 6 5
Wind Gust (mph) 25
Precip Prob (%) 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.1 10.9 10.8 10.6 10.3 10.2 10.8 11.5 11.7 11.4 11.1 10.7 10.6 10.4 10.8 11.2 11.4
Snow Density (%) 50 100 100 100 100 100 100 0 0 0 0 0 0 0 0 0 0
...Absoraka Mountains Above 6000ft West Facing...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC FW FW FW FW FW FW SC FW FW SC SC SC SC SC BK
Cloud Cover (%) 50 35 20 20 20 20 10 20 25 20 15 30 50 30 25 45 65
Temperature 50 43 40 38 36 40 54 60 58 47 43 40 39 43 58 62 59
Min/Max Temp 34 60 37 62
Wind Dir NW N N S SW S SW SW SW S S S S S SW SW SW
Wind (mph) 4 3 3 3 3 3 3 5 3 4 5 5 4 5 4 6 5
Wind Gust (mph) 27 24 21 25
Precip Prob (%) 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30
Precip Type R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.1 10.9 10.7 10.6 10.3 10.1 10.6 11.3 11.5 11.3 11.1 10.9 10.7 10.6 10.8 11.2 11.3
Snow Density (%) 100 100 100 100 100 100 0 0 0 0 0 0 0 0 0 0 0
...Crazy Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC SC FW FW FW FW FW FW FW FW FW FW SC FW FW SC SC
Cloud Cover (%) 50 30 25 25 20 20 5 10 10 15 20 20 30 15 25 30 45
Temperature 53 47 44 42 41 46 56 61 59 49 46 45 44 49 61 64 62
Min/Max Temp 39 61 42 64
Wind Dir N E W W W SW SW S SE SE SW W W SW SW SW S
Wind (mph) 4 4 4 4 4 3 5 6 5 6 4 4 5 5 5 6 4
Wind Gust (mph)
Precip Prob (%) 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 10.8 10.3 9.8 9.6 9.5 10.0 10.8 10.8 10.5 10.3 10.3 10.1 10.2 10.6 10.9 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
$$
--- Precip Type Codes ---
CODE TYPE
T Thunderstorms
R Rain
S Snow
I Sleet
Z Freezing Rain