Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
778 FOUS55 KTFX 180211 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 811 PM MDT Thu Sep 17 2026 MTZ312-181000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 50 73 52 65 48 Temp 56 52 50 50 54 66 72 70 62 58 55 53 54 61 65 63 57 53 50 48 Dewpt 44 46 47 48 49 49 48 49 49 49 49 50 50 51 49 48 49 49 48 47 RH 64 80 89 93 83 54 42 47 62 72 80 89 86 70 56 58 75 86 93 96 Wind dir NE SW SW SW W N N NE NE N N N N NE NE E SE S S S Wind spd 3 4 3 3 3 2 6 8 5 4 3 3 3 5 8 5 4 3 3 2 Clouds B1 B1 SC SC FW FW SC B2 OV OV OV OV B2 B1 B1 B2 B1 B1 SC SC PoP 12hr 10 10 40 50 20 QPF 12hr 0 0 0.06 0.27 0 Snow 12hr 00-00 00-00 00-00 Rain S C S C C C C S S Rain shwrs S Tstms S Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 73 48 78 51 77 49 74 49 74 Temp 65 73 55 49 70 75 57 51 70 73 56 49 67 71 55 49 67 71 Dewpt 50 46 46 44 47 44 43 42 44 42 42 41 43 42 42 41 43 44 PWind dir SW SE SW SW SW SW SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW CL FW FW FW FW FW FW SC FW FW SC SC FW PoP 12hr 0 0 0 0 5 5 5 10 5 $$ MTZ303-181000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 47 69 47 67 45 Temp 58 53 50 47 51 63 68 67 56 53 49 47 50 61 66 65 54 51 47 45 Dewpt 49 47 47 45 45 47 46 47 47 46 45 45 45 49 47 45 45 45 45 44 RH 72 80 89 93 80 56 45 49 72 77 86 93 83 65 50 48 71 80 93 96 Wind dir SE NW NW NW NW N NE NE N N NW NW N SE SE SE SE S S S Wind spd 3 3 4 4 4 4 6 6 4 3 2 1 2 5 8 9 8 5 4 3 Clouds SC B2 SC SC FW SC SC B1 B2 B2 B1 B2 SC SC FW SC SC SC FW FW PoP 12hr 5 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 71 46 74 47 71 46 67 45 68 Temp 63 70 53 46 65 72 53 48 66 68 52 47 61 65 50 46 60 65 Dewpt 50 47 46 44 46 44 42 40 43 42 41 39 42 41 40 39 42 43 PWind dir S S S SW W W W SW S Wind char LT LT LT GN GN LT LT LT LT Avg clouds FW CL CL FW FW FW FW FW FW SC SC SC SC SC FW SC SC SC PoP 12hr 0 0 0 0 0 0 5 10 5 $$ MTZ319-181000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 49 75 52 63 48 Temp 61 56 52 50 54 66 73 70 61 59 56 54 53 60 63 60 56 54 50 48 Dewpt 49 49 49 48 50 51 49 54 52 53 52 51 51 53 51 52 49 48 47 47 RH 65 77 89 93 86 58 43 57 72 80 86 90 93 78 65 75 77 80 89 96 Wind dir S W W N N N N N NW W NW NW NW NW NW N W W N N Wind spd 6 4 2 0 0 0 5 9 8 3 4 5 5 4 5 5 6 3 0 0 Clouds B1 SC SC SC SC FW B1 OV OV OV OV OV OV B2 B2 B2 B2 B2 B1 SC PoP 12hr 40 50 100 80 40 QPF 12hr 0.01 0.03 0.63 0.37 0.01 Snow 12hr 00-00 00-00 00-00 Rain D L D D C C Rain shwrs C S L D L L Tstms S S C S S S Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 73 46 77 48 76 47 74 47 75 Temp 65 73 55 47 68 73 56 48 69 72 55 47 66 70 54 47 66 72 Dewpt 51 45 44 43 47 45 42 42 44 43 41 41 43 42 41 41 43 44 PWind dir NE S S SW S W SE SW SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC CL CL FW FW CL FW FW SC FW FW FW FW FW FW SC SC FW PoP 12hr 5 0 0 5 0 5 5 10 5 $$ MTZ326-181000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 48 71 48 59 44 Temp 58 54 51 49 53 63 69 66 57 54 53 51 52 56 59 57 53 50 48 45 Dewpt 49 48 49 49 51 53 52 56 56 54 53 51 52 55 54 53 52 50 48 45 RH 72 80 93100 93 70 55 70 96100100100100 96 83 86 96100100100 Wind dir SE S S SE N NW NW E NW N N N NW NW NW NW W SW S N Wind spd 8 4 3 1 3 2 3 3 3 0 0 0 3 3 3 2 3 2 2 0 Clouds SC SC SC B1 SC B1 B1 OV OV OV OV OV OV OV OV B2 B2 B2 B2 B2 PoP 12hr 10 50 90 100 70 QPF 12hr 0 0.06 0.37 0.55 0.19 Snow 12hr 00-00 00-00 00-00 Rain D L L L S Rain shwrs S S S C C D D D D D D L Tstms S S S C C S S S S C C S Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 72 43 74 45 74 44 74 44 74 Temp 58 72 52 44 66 72 51 46 67 72 51 45 66 72 51 45 66 72 Dewpt 52 48 46 44 48 45 43 41 45 45 43 41 44 44 42 40 44 45 PWind dir W SE SW SE SW SE SW E SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 SC FW FW FW CL FW FW SC FW SC FW FW FW FW FW SC FW PoP 12hr 20 0 0 0 0 10 5 10 10 Rain S $$ MTZ330-181000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 39 67 38 57 33 Temp 46 42 41 41 45 61 65 60 49 46 44 41 43 53 56 53 45 41 38 34 Dewpt 43 42 41 41 45 52 51 51 49 46 44 41 43 49 46 43 44 41 38 34 RH 89100100100100 72 60 72100100100100100 86 69 69 96100100100 Wind dir SE N N N N N S N N N N N N SW SW W N N N N Wind spd 2 0 0 0 0 0 4 0 0 0 0 0 0 1 4 2 0 0 0 0 Clouds B1 B1 B2 B1 B1 B2 B2 OV OV OV OV OV B2 B2 B2 B2 B2 B2 OV B2 PoP 12hr 50 80 80 80 60 QPF 12hr 0.04 0.14 0.18 0.14 0.03 Snow 12hr 00-00 00-00 00-00 Rain C D D L C C S Rain shwrs S C C S S L L L L D D D L Tstms S S S S S C C C S S S C S Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 64 31 67 32 68 32 68 32 69 Temp 55 64 42 33 60 64 42 33 63 65 41 33 62 65 42 33 63 66 Dewpt 47 41 40 33 43 36 38 33 39 33 36 33 38 33 35 33 38 33 PWind dir W N SW SW SW SW SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 SC SC FW SC SC SC FW FW FW FW FW FW FW SC FW PoP 12hr 30 20 0 0 20 5 10 10 10 Rain S S Rain shwrs C S Tstms S S $$ MTZ328-181000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 47 68 46 60 43 Temp 56 51 49 47 52 62 67 63 53 51 50 48 50 56 60 58 50 48 45 44 Dewpt 47 48 48 47 51 52 51 53 51 51 50 48 50 53 52 52 49 48 45 44 RH 72 89 96100 96 70 56 70 93100100100100 90 75 80 96100100100 Wind dir S SE S SE S SW S N N W SW SW NW NW N N N NW SW SW Wind spd 9 6 4 4 3 2 3 4 5 4 4 5 4 2 3 5 3 3 4 4 Clouds SC SC B1 B1 SC B1 B2 B2 OV OV OV OV OV OV OV B2 B2 B2 B1 B1 PoP 12hr 30 60 80 90 60 QPF 12hr 0.06 0.09 0.34 0.24 0.04 Snow 12hr 00-00 00-00 00-00 Rain L D D L S S Rain shwrs S S C S C C C L L D D L Tstms S S S S S C C S S S C S Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 72 42 74 44 74 42 74 43 74 Temp 60 72 51 43 66 71 51 45 66 71 50 43 65 71 50 44 65 71 Dewpt 51 47 44 42 47 43 41 39 44 42 41 38 42 41 39 38 42 41 PWind dir SW SE SW S SW SW SW S S Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 FW FW FW FW CL FW SC SC FW SC SC FW FW FW SC SC FW PoP 12hr 5 0 0 5 5 10 5 10 10 $$ MTZ305-181000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 49 77 50 70 48 Temp 60 55 52 50 54 68 75 74 63 56 53 50 54 66 69 67 57 53 50 49 Dewpt 49 50 49 49 50 51 50 49 49 50 50 49 50 51 47 49 48 51 50 49 RH 67 83 89 96 86 54 41 41 60 80 89 96 86 58 45 52 72 93100100 Wind dir E E N N W N NE NE NE E NE NE NE E E E E E E E Wind spd 8 3 0 0 1 5 6 10 10 8 6 8 9 11 10 11 9 6 5 4 Clouds SC SC B1 B1 SC FW FW B2 B2 OV B2 OV B2 B1 B1 B2 B1 B1 B1 B1 PoP 12hr 10 5 0 20 20 QPF 12hr 0 0 0 0.02 0 Snow 12hr 00-00 00-00 00-00 Rain S S S S S S Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 73 48 78 50 78 49 76 48 76 Temp 67 73 54 50 70 75 56 51 71 74 55 50 69 72 54 49 69 72 Dewpt 53 51 52 50 52 49 50 47 47 46 45 44 46 45 44 43 45 46 PWind dir E SE SE S SW SW W E E Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC FW FW FW FW FW FW SC FW SC SC SC FW FW SC SC FW PoP 12hr 0 0 0 0 0 5 5 10 5 $$ MTZ314-181000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 811 PM MDT Thu Sep 17 2026 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 50 73 49 59 47 Temp 61 57 55 52 56 67 71 69 59 56 54 51 52 56 58 57 54 52 50 48 Dewpt 47 47 47 46 47 50 50 51 50 52 51 50 51 54 52 52 51 51 49 48 RH 60 69 74 80 72 54 47 53 72 86 90 96 96 93 80 83 90 96 96100 Wind dir S SE SW SW W NW N NE E E N NE N N N N E E E SW Wind spd 4 3 3 2 2 3 6 4 3 2 3 3 4 5 6 5 5 3 3 3 Clouds B1 SC B1 SC FW FW SC B2 OV OV OV OV OV OV OV B2 OV B2 OV B2 PoP 12hr 5 20 70 90 80 QPF 12hr 0 0 0.45 0.56 0.28 Snow 12hr 00-00 00-00 00-00 Rain C D D D L L C Rain shwrs S C L D D D Tstms S S S S C S Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 70 46 74 49 76 48 74 48 75 Temp 60 70 54 47 68 71 55 51 71 71 54 49 69 69 54 49 69 70 Dewpt 53 49 49 46 47 46 46 42 43 44 43 40 42 43 42 40 42 43 PWind dir N SE S S SW S W SE S Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC FW SC FW FW FW SC FW FW SC SC FW FW FW SC FW PoP 12hr 50 0 0 0 5 5 5 10 5 Rain C Rain shwrs C Tstms S $$ http://www.weather.gov/greatfalls