Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
781 FOUS55 KTFX 170841 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 241 AM MDT Sat May 17 2025 MTZ312-172200- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 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 66 47 54 41 61 Temp 42 40 49 58 63 65 56 51 50 49 49 51 53 52 47 44 43 41 45 52 58 59 Dewpt 35 34 36 36 35 38 41 42 43 45 46 46 44 42 38 35 35 33 34 36 37 37 RH 76 79 61 44 35 37 57 71 77 86 89 83 71 69 71 70 73 73 65 54 45 44 Wind dir SW SW SW SW S E E E E NE E NW W NW NW W W W SW SW W W Wind spd 9 8 6 5 4 9 10 10 10 10 12 16 16 14 13 13 11 10 12 11 11 11 Clouds SC FW FW SC SC B1 B2 OV OV OV OV OV OV B2 OV B2 B2 B2 B1 B1 B1 B1 PoP 12hr 10 90 100 60 40 QPF 12hr 0 0.19 0.33 0.15 0.01 Snow 12hr 00-00 00-00 00-00 Rain D D D D D L L Rain shwrs C C C C C S S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 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 40 64 39 66 42 63 41 66 Temp 47 41 60 61 46 40 59 65 49 43 59 60 46 42 59 65 Dewpt 35 32 35 32 33 30 31 31 36 35 36 35 36 33 36 37 PWind dir SW SW SW SW SW W W W Wind char GN BZ GN GN GN GN GN GN Avg clouds B1 SC FW SC SC FW FW SC B1 B1 B1 B1 SC SC FW SC PoP 12hr 10 20 10 10 30 40 20 20 Rain shwrs S S C C C S S Tstms S S $$ MTZ303-172200- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 64 42 51 38 58 Temp 40 37 46 56 61 63 54 49 47 44 44 48 49 49 44 42 40 39 44 53 56 56 Dewpt 34 33 32 32 31 32 31 33 38 40 42 42 42 41 38 35 34 32 34 34 35 35 RH 79 85 58 40 32 31 41 54 71 86 93 80 77 74 79 76 79 76 68 48 45 45 Wind dir W W W S S E E E E E E NE NW NW W W W W W W W W Wind spd 9 8 5 5 5 5 5 8 8 9 13 13 14 16 13 12 10 10 13 14 18 18 Clouds B1 SC B1 B1 B1 SC B2 B2 OV OV OV OV OV B2 OV B2 B2 B2 B1 SC B1 B1 PoP 12hr 5 70 90 60 20 QPF 12hr 0 0.17 0.71 0.11 0.01 Snow 12hr 00-00 00-00 00-00 Rain D D D D L L Rain shwrs C C C S S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 37 60 37 62 37 60 37 63 Temp 43 38 57 58 43 37 57 61 44 38 56 59 45 38 57 62 Dewpt 32 30 32 30 29 28 27 28 31 31 31 32 33 32 32 32 PWind dir W W W W W W W W Wind char BZ BZ BZ GN GN GN GN GN Avg clouds B1 SC SC SC FW FW FW SC B1 B1 B1 B1 SC SC SC SC PoP 12hr 5 10 5 10 20 30 10 20 Rain shwrs S S C C S S $$ MTZ319-172200- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 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 67 46 53 39 61 Temp 44 41 47 58 64 66 58 53 51 48 48 50 52 51 48 45 42 39 44 52 58 59 Dewpt 35 37 37 40 38 39 40 42 44 43 41 40 38 35 32 31 31 31 32 33 34 33 RH 70 85 68 51 38 37 51 66 77 83 77 68 59 54 54 58 65 73 62 48 40 37 Wind dir SW W E E E E NE NE W W W W W W W W W W W W W W Wind spd 3 3 1 4 4 5 5 3 2 4 10 13 17 17 13 10 8 6 8 10 13 13 Wind gust 27 31 27 24 24 24 Clouds SC SC SC SC B1 SC OV OV OV OV OV OV OV B2 B2 B2 B2 B1 B1 SC B1 SC PoP 12hr 20 80 90 50 30 QPF 12hr 0 0.20 0.23 0.06 0.01 Snow 12hr 00-00 00-00 00-00 Rain L L D D D D Rain shwrs S S C C C C C C C S S Tstms S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 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 40 64 39 68 43 66 41 69 Temp 47 40 56 62 47 39 58 67 50 43 57 64 50 41 60 68 Dewpt 32 32 34 34 33 32 33 32 34 35 35 36 35 35 37 38 PWind dir W W W W W W W NW Wind char GN GN LT LT LT LT LT LT Avg clouds SC SC SC B1 SC FW FW SC B1 B1 B1 B1 SC SC FW SC PoP 12hr 5 40 20 10 30 40 20 20 Rain shwrs C S C C C C S S Tstms S S $$ MTZ326-172200- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 65 43 51 34 58 Temp 41 40 46 57 63 63 54 51 47 45 46 48 50 49 44 41 37 35 40 48 55 56 Dewpt 39 38 40 40 39 40 42 44 44 42 43 42 41 39 35 34 32 30 31 32 33 34 RH 92 92 79 53 41 43 64 77 89 89 89 80 71 68 70 76 82 82 70 54 43 43 Wind dir S S E N NE E SE SE SE SE W NW NW NW NW W W W W W W NW Wind spd 3 3 1 1 2 6 8 6 4 2 5 6 10 11 9 6 5 4 5 6 6 8 Clouds OV B2 B1 SC B1 B1 B2 OV B2 OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 30 60 100 60 30 QPF 12hr 0 0.06 0.44 0.15 0.03 Snow 12hr 00-00 00-00 00-00 Rain L D D D D L L Rain shwrs S C S L C C C C C S S Tstms S S S S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 36 62 36 66 40 64 38 67 Temp 44 37 56 59 44 36 55 65 47 40 55 62 45 38 58 66 Dewpt 34 32 35 36 37 33 34 36 37 36 38 40 37 34 38 39 PWind dir SW SW SW SW S W SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC B1 B1 SC SC SC B1 B1 B1 B1 B1 SC SC SC PoP 12hr 10 40 40 10 30 40 30 20 Rain shwrs C C C C C C C S Tstms C S S S $$ MTZ330-172200- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 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 59 36 46 27 51 Temp 35 33 39 53 58 55 45 40 38 37 38 44 45 44 37 33 29 27 33 44 49 49 Dewpt 34 33 33 32 32 33 38 37 37 37 37 36 35 33 31 30 27 25 26 27 28 28 RH 96100 79 44 37 43 76 89 96100 96 73 68 65 79 89 92 92 75 51 44 44 Wind dir S S S SW S S E S S S S SW SW W W NW NW NW NW NW W W Wind spd 3 2 2 5 6 5 3 2 2 2 2 5 6 5 4 3 2 2 3 5 6 6 Wind gust 16 17 17 Clouds B2 B2 B2 B2 B1 B2 OV OV OV OV OV OV OV B2 OV B2 B2 B2 B1 B1 B1 B1 PoP 12hr 40 80 100 80 30 QPF 12hr 0 0.31 0.24 0.06 0.02 Snow 12hr 00-00 00-00 00-00 Rain L L D D D D D D Rain shwrs S C C L C C S Snow D Snowshwrs C C C C Tstms S S S S Obvis PF F Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 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 27 54 27 58 31 60 30 63 Temp 35 27 49 51 35 27 53 56 38 31 54 56 38 30 58 61 Dewpt 31 27 28 29 31 26 29 28 31 29 32 30 32 29 30 29 PWind dir W SW SW SW S SW S S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC B1 B1 SC SC SC B1 B1 B1 B1 SC FW SC SC PoP 12hr 20 50 50 10 30 40 20 20 Rain shwrs S C C C C C C S S Snowshwrs C Tstms S S S S $$ MTZ328-172200- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 62 40 49 30 57 Temp 39 36 43 53 60 60 51 47 45 42 42 46 48 47 42 37 33 31 36 47 54 55 Dewpt 36 34 37 39 36 37 41 42 41 38 38 37 37 35 30 27 25 25 27 29 31 31 RH 89 92 79 59 41 42 68 83 86 86 86 71 65 63 62 67 72 78 69 49 41 40 Wind dir S S W S SE S SE SW SW SW W W NW N N NW W SW W NW NW NW Wind spd 4 4 4 5 8 9 6 5 5 6 10 12 13 13 13 10 8 6 8 9 11 11 Wind gust 24 24 Clouds SC B1 B2 B1 B2 B2 OV OV OV OV OV OV B2 B2 B2 B1 B1 SC SC SC SC SC PoP 12hr 40 80 90 40 10 QPF 12hr 0 0.18 0.30 0.04 0 Snow 12hr 00-00 00-00 00-00 Rain D D D D L L Rain shwrs C L D C C S S Snowshwrs S S Tstms S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 34 61 35 66 40 64 37 67 Temp 42 35 55 58 42 35 56 64 47 40 55 62 45 37 59 66 Dewpt 32 28 34 32 34 29 31 33 34 33 35 36 34 31 35 35 PWind dir W SW SW SW S SW W SW Wind char GN GN GN GN GN GN GN LT Avg clouds SC FW SC B1 SC FW SC SC B1 B1 B1 B1 SC SC SC FW PoP 12hr 5 30 20 5 30 30 10 10 Rain shwrs C S C C S C Tstms S S S $$ MTZ305-172200- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 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 69 44 56 40 58 Temp 43 41 50 61 66 66 57 52 49 46 47 53 55 53 48 46 43 41 45 50 55 56 Dewpt 39 39 41 41 40 39 43 44 43 42 43 46 47 46 46 44 42 40 44 45 44 43 RH 86 92 71 48 38 37 59 74 80 86 86 77 74 77 93 93 96 96 96 83 66 62 Wind dir E E S S SE E E E E E E E E E E E E E SE S SW S Wind spd 5 5 5 5 8 10 12 14 16 17 19 21 20 17 13 11 10 9 8 8 9 10 Clouds B1 SC SC SC SC SC B1 B1 OV OV OV OV OV OV OV OV OV OV B2 B2 B2 B1 PoP 12hr 30 40 90 80 60 QPF 12hr 0 0 0.19 0.28 0.05 Snow 12hr 00-00 00-00 00-00 Rain D D D D D D L L L L Rain shwrs C S S S S S C C C C Tstms S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 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 39 66 39 67 40 66 40 67 Temp 46 40 61 64 47 40 60 66 49 41 60 62 48 41 61 65 Dewpt 43 38 40 36 37 34 37 35 39 37 42 40 42 38 42 39 PWind dir S SW SW SW S W W W Wind char GN GN GN GN GN GN GN GN Avg clouds B2 B1 SC B1 SC FW FW SC SC B1 B1 B1 B1 SC SC B1 PoP 12hr 30 30 20 20 30 50 30 30 Rain shwrs C S C S S S C C C C S S C Tstms S $$ MTZ314-172200- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 241 AM MDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 62 42 56 37 51 Temp 39 38 48 56 60 60 52 49 47 44 47 53 54 50 44 42 39 38 40 44 48 49 Dewpt 35 34 37 39 40 42 42 41 41 40 42 46 47 45 41 39 36 34 36 37 38 38 RH 85 85 65 53 47 51 69 74 79 86 83 77 77 83 89 89 89 85 85 76 68 66 Wind dir S S W SE SE E E E E E E E NE N NW NW W W NW NW NW NW Wind spd 6 5 3 3 5 8 9 10 10 9 10 10 11 13 13 10 10 9 10 10 8 6 Wind gust 24 Clouds SC SC SC B1 B1 B1 B2 OV OV OV B2 OV OV OV OV OV OV OV B2 B2 B2 B2 PoP 12hr 40 60 100 90 70 QPF 12hr 0.01 0.04 0.37 0.62 0.09 Snow 12hr 00-00 00-00 00-00 Rain L L D D D D L L L L Rain shwrs S C C C S C L L C Tstms S C S S S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 37 59 37 61 39 60 38 61 Temp 42 38 55 56 44 38 57 59 45 40 57 56 44 39 57 59 Dewpt 38 33 36 37 36 31 34 34 37 34 39 40 37 33 37 39 PWind dir SW W SW W S W W W Wind char LT GN LT GN LT GN LT LT Avg clouds B2 B2 SC B1 B1 SC FW SC B1 B1 B1 B2 B1 SC SC B1 PoP 12hr 40 40 40 30 40 60 40 40 Rain shwrs C S S C C C C C C L C S S C Tstms S S S S S $$ http://www.weather.gov/greatfalls