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Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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Point Forecast Matrices
National Weather Service Great Falls MT
441 AM MDT Mon Apr 19 2021
MTZ012-192300-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 37 21 43 22 56
Temp 22 26 31 35 37 31 27 24 21 30 36 41 42 33 27 24 23 35 47 54 55
Dewpt 21 23 22 22 21 21 21 20 18 23 20 19 18 19 18 18 17 22 21 19 18
RH 96 88 69 59 52 66 78 84 88 75 52 41 37 56 68 77 77 59 35 25 23
Wind dir NW NW NW NW NW N SW SW W W NW NW NE SE S S S S SW SW S
Wind spd 10 10 11 13 14 5 6 9 8 6 6 6 5 5 8 9 8 10 10 9 8
Clouds B2 B2 B2 B2 B1 SC B1 B1 B1 B1 B1 SC FW FW FW CL CL CL CL CL CL
PoP 12hr 20 20 5 0 0
QPF 12hr 0 0 0 0 0
Snow 12hr 00-00 00-00 00-00
Snow S S S S S S
Winter Weath Y Y
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 30 50 25 41 27 51 34 54
Temp 35 31 50 43 32 25 34 41 30 27 45 49 40 34 47 53
Dewpt 19 19 34 30 27 23 22 23 23 22 28 29 34 31 34 33
PWind dir S W N N SE SW SW W
Wind char GN GN GN GN GN GN GN GN
Avg clouds CL CL SC B1 B2 B2 B2 B1 SC SC B1 B2 B2 B2 B2 B2
PoP 12hr 0 40 60 30 10 20 30 30
Rain C L S S C C C
Snow L L C C
$$
MTZ010-192300-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 38 21 46 22 58
Temp 20 26 33 36 38 31 26 23 22 31 38 44 45 35 28 24 22 35 50 57 57
Dewpt 19 22 19 20 20 19 20 19 18 22 19 19 18 17 16 16 16 20 21 21 20
RH 96 85 56 52 48 61 78 84 84 69 46 36 33 47 60 71 77 54 31 24 23
Wind dir NW NW NW NW NW NW NW NW NW N N NW NE S S SW SW S S SW SW
Wind spd 11 13 17 18 16 10 6 8 8 5 6 6 8 6 6 8 5 8 10 10 11
Clouds B1 B1 B2 B1 B1 SC B1 B1 B1 SC SC SC FW FW FW CL CL CL CL CL CL
PoP 12hr 10 10 5 0 0
QPF 12hr 0 0 0 0 0
Snow 12hr 00-00 00-00 00-00
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 32 45 22 42 25 49 29 49
Temp 37 33 43 42 28 22 34 41 29 25 43 48 34 29 41 48
Dewpt 21 23 32 29 24 18 21 22 23 22 27 27 28 26 30 30
PWind dir SW NW N N SE S NW N
Wind char GN BZ GN GN GN GN GN GN
Avg clouds CL FW B1 B2 B2 B2 B1 B1 SC B1 B1 B2 B2 B2 B2 B2
PoP 12hr 5 50 50 20 10 20 20 20
Rain C C S S S
Snow C C S S S S S
$$
MTZ014-192300-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 39 23 45 23 56
Temp 26 28 33 38 38 31 25 24 24 30 37 44 45 37 29 26 23 32 45 53 55
Dewpt 22 22 19 18 16 16 14 16 17 19 18 17 17 17 17 16 15 20 22 18 18
RH 85 78 56 44 40 53 62 71 74 63 46 33 32 44 60 65 71 61 40 25 23
Wind dir NW N NW NW NW W W W W N N NW N N SW S S S SE E E
Wind spd 13 10 14 12 11 5 4 3 3 1 9 8 10 5 3 2 2 2 4 5 6
Clouds OV B1 B2 B1 SC SC FW SC SC SC SC SC FW FW FW FW CL CL CL CL CL
PoP 12hr 30 10 5 0 0
QPF 12hr 0 0 0 0 0
Snow 12hr 00-00 00-00 00-00
Snow C S S
Winter Weath Y Y
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 30 55 30 47 30 57 36 58
Temp 37 30 52 50 35 30 38 46 35 30 50 55 43 36 50 56
Dewpt 17 17 29 28 26 23 23 23 24 22 30 30 31 28 33 33
PWind dir S W N N W SW W W
Wind char LT LT GN LT LT LT LT LT
Avg clouds CL CL SC B1 B2 B2 B2 B1 SC B1 B1 B2 B2 B2 B2 B2
PoP 12hr 0 30 50 30 10 20 30 30
Rain C C S C C C C
Snow C C C
$$
MTZ055-192300-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 37 17 43 17 53
Temp 25 28 33 36 36 27 23 19 18 27 36 40 43 33 25 21 17 29 41 50 52
Dewpt 22 22 19 18 17 16 17 15 14 18 17 18 19 20 17 16 12 17 19 19 18
RH 88 78 56 47 45 63 77 84 84 68 45 41 38 58 71 81 80 60 41 29 26
Wind dir NW W W NW NW W S S S SW W NW N E E E E SE N NW E
Wind spd 12 12 16 12 12 6 8 5 5 2 6 5 8 5 5 4 3 1 2 3 5
Clouds OV B2 B2 B1 SC SC FW SC SC SC SC SC SC FW FW FW FW CL CL CL CL
PoP 12hr 60 20 5 0 0
QPF 12hr 0.03 0 0 0 0
Snow 12hr T 00-00 00-00
Snow L C S S S
Winter Weath Y Y
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 24 57 29 48 27 58 34 59
Temp 31 24 52 55 36 29 40 48 34 27 51 56 42 34 53 57
Dewpt 17 14 25 29 29 26 27 28 27 23 31 33 34 31 37 35
PWind dir SE SW NW W SE SW S SW
Wind char LT LT LT LT LT LT GN LT
Avg clouds CL CL FW B1 B2 B2 B2 B2 SC B1 B1 B2 B2 B2 B2 OV
PoP 12hr 0 5 50 30 10 20 30 40
Rain C S S C C C C
Snow C C C S
$$
MTZ055-192300-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 35 9 39 8 49
Temp 19 21 30 35 31 25 18 14 9 19 32 38 36 26 18 12 8 21 42 49 46
Dewpt 17 13 11 11 11 12 12 10 7 7 7 7 9 12 11 8 5 7 10 11 12
RH 92 71 44 36 43 57 77 84 91 59 34 27 32 55 73 84 87 54 26 21 25
Wind dir NW N NE N N N W SW NE SE N N N N NE NE NE NE NE NE N
Wind spd 11 11 10 9 10 9 8 3 4 3 5 5 6 4 3 2 2 1 2 4 4
Clouds B2 B2 B1 B1 SC FW FW FW FW FW FW FW SC FW FW FW FW CL CL CL CL
PoP 12hr 50 10 0 0 0
QPF 12hr 0.03 0 0 0 0
Snow 12hr T 00-00 00-00
Snow C C S
Winter Weath Y Y
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 11 52 21 47 20 51 26 55
Temp 22 11 47 46 29 21 44 42 27 20 47 46 32 26 51 50
Dewpt 12 6 16 20 24 20 22 21 23 18 23 25 27 25 28 28
PWind dir NE SW SW W SW SW SW SW
Wind char LT LT LT LT LT LT LT GN
Avg clouds CL CL FW SC B1 B1 B1 B1 SC B1 B1 B2 B2 B2 B2 B2
PoP 12hr 0 10 40 40 10 20 30 50
Rain C S C C C C
Snow C C C C C C
$$
MTZ008-192300-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 38 16 43 18 53
Temp 26 25 33 37 37 28 21 18 16 24 33 41 42 32 25 21 18 28 40 50 52
Dewpt 24 20 18 13 14 13 12 12 11 15 12 12 14 16 16 15 12 17 16 12 11
RH 92 81 53 37 38 53 68 77 80 68 41 30 31 51 68 77 77 63 37 21 19
Wind dir N NE N N N NE SE S S NE N N NE NE E E SE N N N N
Wind spd 17 19 31 26 20 9 11 6 8 8 12 14 13 10 8 6 5 5 6 8 10
Wind gust 44 37
Clouds OV B2 B1 SC SC FW FW FW FW FW FW FW FW FW FW CL FW CL CL CL CL
PoP 12hr 80 5 0 0 0
QPF 12hr 0.11 0 0 0 0
Snow 12hr 2 00-00 00-00
Snow D C
Obvis BS BS BS
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 25 58 30 52 30 58 36 60
Temp 34 25 52 55 37 30 42 51 37 30 51 56 43 36 56 58
Dewpt 14 12 18 22 31 28 27 24 28 26 26 27 33 31 33 29
PWind dir SE SW N N W SW SW SW
Wind char GN GN GN GN GN GN GN GN
Avg clouds CL CL FW SC B2 B1 B1 B1 B1 SC B1 B2 B2 B2 B2 B2
PoP 12hr 0 10 30 20 5 10 20 40
Rain C C S S S C C
Snow C S
$$
MTZ011-192300-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 41 24 47 24 59
Temp 22 31 37 40 40 35 28 26 25 34 41 45 46 37 30 27 24 37 50 57 58
Dewpt 22 27 24 22 20 21 19 19 21 22 20 18 17 19 18 19 17 22 23 21 21
RH 100 85 59 48 44 56 68 74 84 61 42 33 31 48 60 71 74 54 34 24 23
Wind dir W W NW NW NW NW W W W NW N N N SE S S S SW SW SW SW
Wind spd 9 11 14 20 17 5 4 5 8 8 9 9 5 4 4 5 5 6 10 10 9
Clouds B2 B2 B2 B2 B1 SC SC B1 B1 SC SC FW FW FW FW FW FW CL CL CL CL
PoP 12hr 30 20 5 0 0
QPF 12hr 0 0 0 0 0
Snow 12hr 00-00 00-00 00-00
Snow S C C S
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 32 54 27 45 28 54 32 53
Temp 38 32 54 45 32 27 38 44 31 28 48 53 36 32 45 52
Dewpt 20 21 36 31 25 23 21 22 22 23 29 28 26 27 33 34
PWind dir S W N N E E NE E
Wind char LT GN GN GN LT GN GN GN
Avg clouds CL FW SC B2 B2 B2 B2 B1 SC SC B1 B1 B2 B2 B2 B2
PoP 12hr 0 30 40 20 10 10 20 30
Rain C C S S C S
Snow C C S S C
$$
MTZ051-192300-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
441 AM MDT Mon Apr 19 2021
Date Mon 04/19/21 Tue 04/20/21 Wed 04/21/21
MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
Max/Min 33 19 38 18 50
Temp 20 22 29 31 33 25 21 21 19 25 30 35 38 29 22 20 19 31 43 48 49
Dewpt 19 19 20 22 21 19 18 18 17 21 19 20 19 19 17 15 14 20 22 22 22
RH 96 88 69 69 61 78 88 88 92 84 63 54 46 66 81 81 80 63 43 35 34
Wind dir NW NW NW NW NW W W W W NW NW NW N S S S S S S S S
Wind spd 8 9 13 16 12 9 5 5 6 6 9 9 5 4 4 5 5 4 6 6 5
Wind gust 16
Clouds OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC FW FW CL CL CL CL CL
PoP 12hr 60 40 20 0 0
QPF 12hr 0.05 0.05 0.02 0 0
Snow 12hr 1 1 T
Snow C C L C C C C C S S
Winter Weath Y Y
Date Thu 04/22/21 Fri 04/23/21 Sat 04/24/21 Sun 04/25/21
MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
Min/Max 26 51 24 37 23 48 31 52
Temp 29 27 51 44 29 24 30 37 27 23 43 47 34 31 46 51
Dewpt 18 17 30 30 27 23 22 24 22 19 28 29 31 28 34 35
PWind dir S W NW NW S SW SE SW
Wind char LT GN GN LT LT LT LT GN
Avg clouds CL CL FW B1 B2 B2 B2 B2 B1 SC B1 B2 B2 B2 OV B2
PoP 12hr 0 20 60 50 20 20 40 40
Rain S C S C C C C
Snow C L C S S C C
$$
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- Page last modified: Feb 1st, 2021 20:13 UTC