Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
369 FOUS55 KTFX 150631 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 1231 AM MDT Tue Sep 15 2026 MTZ312-161000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu 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 41 64 44 60 42 Temp 41 41 45 57 64 62 55 49 46 44 46 53 59 60 51 46 44 42 Dewpt 38 39 40 43 43 42 43 43 43 43 43 43 43 43 43 42 41 40 RH 89 92 82 59 46 48 64 80 89 96 89 69 55 53 74 86 89 93 Wind dir S SE E E NE NE NE NW NW N N N NE E E SE S S Wind spd 3 3 2 4 9 13 13 8 8 5 4 4 5 5 5 3 3 3 Clouds SC SC B1 B1 SC B1 B2 SC SC B2 B2 B2 SC FW FW CL FW FW PoP 12hr 10 0 5 10 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 49 69 48 73 48 75 49 77 Temp 62 68 53 49 63 66 52 48 66 70 53 48 67 72 53 49 70 73 Dewpt 45 48 49 47 50 46 46 44 46 44 42 41 44 42 41 39 43 43 PWind dir SE NW W W SW S SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW B2 B1 B1 B1 B1 SC SC FW FW FW FW CL FW FW SC FW PoP 12hr 5 60 50 40 10 5 0 0 0 Rain C S Rain shwrs L C C C Tstms S S $$ MTZ303-161000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 41 56 43 57 40 Temp 41 41 44 51 55 54 48 47 43 43 45 51 56 55 48 45 41 40 Dewpt 40 40 41 42 42 42 43 44 43 43 43 42 42 42 42 41 39 39 RH 96 96 89 71 61 64 83 89100100 93 71 59 61 80 86 92 96 Wind dir N E E SE E E E N N N N E SE SE SE S S S Wind spd 2 1 3 11 9 9 8 6 8 6 4 3 3 5 6 8 5 2 Clouds B2 B1 B2 OV OV OV OV OV OV OV B1 B1 SC SC FW CL CL FW PoP 12hr 20 5 80 10 0 QPF 12hr 0 0 0.06 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain C L L C Rain shwrs S Obvis PF PF Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 66 45 67 45 70 45 71 45 72 Temp 59 64 51 45 62 65 51 46 64 67 51 46 65 68 51 45 64 68 Dewpt 45 46 45 42 47 44 44 42 45 44 42 41 44 44 41 40 44 44 PWind dir SE E NW NW SW SW SW S SW Wind char LT LT LT LT LT GN LT LT LT Avg clouds FW CL SC SC SC FW SC SC SC SC FW SC SC FW FW FW SC FW PoP 12hr 0 20 20 5 5 5 0 0 0 Rain shwrs S S Tstms S $$ MTZ319-161000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu 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 40 69 45 65 44 Temp 42 40 47 60 67 67 56 53 49 46 49 57 63 63 52 49 46 44 Dewpt 37 38 38 40 37 36 39 42 42 42 41 43 41 41 40 41 40 40 RH 82 92 71 47 33 32 53 66 77 86 74 59 44 44 63 74 79 86 Wind dir S N N E NE N W W W W NW N N N NW N N N Wind spd 3 0 0 4 8 8 13 10 8 6 9 8 10 9 9 0 0 0 Wind gust 24 Clouds FW FW SC FW SC B1 SC SC SC B1 B1 SC FW CL FW FW FW FW PoP 12hr 10 0 5 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis PF Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 76 50 71 47 73 47 76 46 77 Temp 66 72 56 50 65 67 54 47 65 70 54 47 68 73 54 46 68 74 Dewpt 46 47 48 47 49 45 44 43 45 40 40 40 42 37 38 38 41 38 PWind dir E NW W W NW SW S SW S Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW SC B2 B1 B1 B2 B1 SC SC FW FW FW FW CL FW FW SC FW PoP 12hr 20 70 60 40 10 10 5 5 0 Rain C S Rain shwrs S L C C L Tstms S S S $$ MTZ326-161000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 36 71 37 69 39 Temp 39 37 44 60 69 68 55 46 42 39 44 57 67 67 55 47 43 40 Dewpt 39 37 38 39 39 39 40 40 40 39 39 43 43 42 43 43 42 40 RH 100100 79 46 33 34 57 79 93100 82 59 42 40 64 86 96100 Wind dir SE S N N NE E E SW N N NW NW NW NE E E E E Wind spd 5 3 0 2 3 6 9 4 0 0 1 3 5 5 8 9 8 4 Clouds SC FW CL CL CL SC B1 SC FW SC FW FW FW FW FW FW SC SC PoP 12hr 5 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 75 44 69 41 71 40 74 41 76 Temp 65 70 52 45 62 66 49 44 64 69 49 43 66 72 49 43 68 74 Dewpt 48 51 49 45 50 46 46 43 45 41 41 38 42 39 39 36 39 39 PWind dir SE SE SW SE SW SE SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B1 B2 B2 B1 SC SC FW FW FW FW CL CL FW FW FW PoP 12hr 40 60 70 40 20 5 5 0 0 Rain C C S S Rain shwrs C L C L L Tstms S S S $$ MTZ330-161000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu 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 26 65 26 72 36 Temp 30 26 36 57 64 62 47 39 32 26 39 64 71 69 53 44 39 37 Dewpt 29 26 30 30 22 24 26 27 27 25 28 35 32 35 38 39 38 37 RH 96100 79 35 20 23 43 62 81 96 64 34 24 28 57 82 96100 Wind dir N N N SW SW SW N N N N N SW SW SW NE NE E N Wind spd 0 0 0 5 11 9 0 0 0 0 0 1 3 1 3 3 1 0 Wind gust 21 19 12 Clouds FW B1 FW CL FW FW FW FW FW FW FW FW FW SC SC B1 B1 B1 PoP 12hr 5 0 0 5 30 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C Obvis PF PF Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 69 35 62 29 65 28 69 28 70 Temp 63 63 45 36 57 58 39 30 58 62 39 29 62 65 40 28 64 66 Dewpt 50 49 45 36 45 38 38 30 40 32 34 29 36 28 30 27 33 28 PWind dir S SE SW SW SW SW SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B1 B1 B2 SC SC SC SC FW FW FW FW FW SC SC FW PoP 12hr 70 80 60 20 20 5 5 0 0 Rain S S S Rain shwrs C L D C C L Tstms C C S $$ MTZ328-161000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 34 71 36 71 41 Temp 36 34 41 58 70 69 55 48 42 37 43 59 69 69 54 48 43 41 Dewpt 34 33 34 34 33 31 31 33 34 33 35 39 38 40 39 40 40 40 RH 92 96 76 40 25 24 40 56 73 85 73 47 32 35 57 74 89 96 Wind dir S S SW N NE NE SE E S SE N N N NE NE NE E S Wind spd 4 4 3 3 3 6 9 6 4 3 3 6 11 12 8 4 3 3 Wind gust 17 21 23 Clouds SC CL CL CL FW SC B2 SC SC FW CL FW FW FW FW SC SC SC PoP 12hr 5 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 74 44 68 40 71 40 75 41 76 Temp 65 68 51 44 63 65 48 40 64 69 49 40 66 72 49 41 68 72 Dewpt 46 49 47 44 47 43 42 39 43 38 38 36 39 35 35 33 37 34 PWind dir S S SW W W S SW S SW Wind char LT GN LT LT LT LT LT LT LT Avg clouds SC B2 B2 B2 B1 B1 B1 SC SC FW CL FW FW CL FW SC SC FW PoP 12hr 60 70 50 30 10 5 5 0 0 Rain C Rain shwrs S L L L C C Tstms S S S $$ MTZ305-161000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu 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 41 65 43 64 41 Temp 41 41 45 57 63 62 52 49 46 44 47 57 62 61 50 45 43 41 Dewpt 41 41 43 43 41 42 41 43 44 43 43 44 42 43 43 41 41 40 RH 100100 93 59 44 48 66 80 93 96 86 62 48 51 77 86 93 96 Wind dir SW N E E E E E E NE NE NE N N NE E SE SE SE Wind spd 4 0 4 9 12 14 17 14 12 9 6 5 4 2 5 6 6 6 Clouds B1 B1 B1 B1 OV OV OV OV OV OV B1 B1 SC FW FW FW FW FW PoP 12hr 20 0 70 20 0 QPF 12hr 0 0 0.07 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain C L C S Rain shwrs Obvis PF PF Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 74 46 72 45 74 45 76 46 79 Temp 66 71 53 47 64 68 52 48 67 71 52 47 68 72 53 49 70 75 Dewpt 47 49 48 46 51 49 48 46 49 47 45 44 47 46 44 42 45 46 PWind dir E E NW SW SE S SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW CL FW SC B1 B1 SC SC SC SC SC SC SC FW FW FW FW FW PoP 12hr 0 20 40 20 20 5 0 0 20 Rain S S S Rain shwrs S C C S Tstms S S $$ MTZ314-161000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 1231 AM MDT Tue Sep 15 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 39 65 41 61 41 Temp 41 39 46 57 63 63 52 48 44 41 44 52 59 59 48 45 43 42 Dewpt 40 38 41 41 38 38 39 39 39 39 41 42 42 41 41 42 41 40 RH 96 96 83 55 39 39 61 71 82 92 89 69 53 51 77 89 93 93 Wind dir SW S E E SE SE E E SE W NW NW N NE E SE SE SE Wind spd 3 2 4 3 5 11 16 14 2 3 5 6 5 4 8 9 8 6 Wind gust 26 25 Clouds B1 SC FW SC SC SC B1 B1 SC B1 SC FW FW FW FW FW FW FW PoP 12hr 20 0 5 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 73 48 66 45 69 45 73 47 77 Temp 65 71 53 49 61 62 50 47 63 66 50 47 67 70 52 47 72 73 Dewpt 46 47 47 45 50 47 46 44 44 42 42 39 41 41 39 37 39 39 PWind dir SE SE NW W W S SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW B1 B1 B1 B2 B2 B1 B1 B1 FW SC SC CL FW FW SC FW PoP 12hr 0 30 70 60 30 10 5 5 0 Rain C C C Rain shwrs C C C L L Tstms S S S $$ http://www.weather.gov/greatfalls