Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
219 FOUS55 KTFX 171716 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 1116 AM MDT Thu Sep 17 2026 MTZ312-172200- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 74 50 74 51 68 Temp 63 72 72 61 55 53 50 55 67 73 70 61 57 54 52 54 60 66 67 Dewpt 44 46 49 49 48 48 46 49 51 49 51 51 51 50 49 50 49 48 49 RH 50 39 44 65 77 83 86 80 56 43 51 70 80 86 89 86 67 52 52 Wind dir E NE NE SE SW W W W NW N NE N NW NW NW NW N E E Wind spd 3 10 10 4 4 4 3 3 4 8 8 5 5 4 3 3 3 4 3 Clouds SC SC B1 SC SC SC SC SC SC B2 OV OV OV B2 B2 B2 B1 B1 B1 PoP 12hr 0 10 10 40 40 QPF 12hr 0 0 0 0.30 0.09 Snow 12hr 00-00 00-00 00-00 Rain L L C C C C Rain shwrs S C C Tstms S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 48 75 49 79 50 78 49 79 Temp 53 48 65 74 54 50 71 76 56 50 71 74 56 49 70 74 Dewpt 47 45 46 44 44 42 44 43 41 40 42 42 41 40 42 42 PWind dir SE SW SE SW SW SW SW SW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC FW CL CL CL FW CL FW FW FW FW FW SC SC FW PoP 12hr 5 0 0 0 0 0 0 5 $$ MTZ303-172200- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 69 47 69 46 68 Temp 58 67 67 56 53 50 48 52 63 68 67 56 53 48 46 51 61 66 67 Dewpt 44 46 46 46 46 46 45 46 48 47 47 47 47 44 43 45 48 46 47 RH 59 47 47 69 77 86 89 80 58 47 49 72 80 86 89 80 62 48 49 Wind dir SE SE SE E NW NW NW NW N N N NE N NW N NW SE SE SE Wind spd 4 6 8 2 3 4 5 5 5 8 9 5 4 3 2 2 4 8 9 Clouds FW FW FW B1 B1 B1 B1 SC SC B2 B2 B2 B1 SC SC SC SC FW FW PoP 12hr 0 5 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 45 72 46 75 46 73 46 72 Temp 52 45 63 71 53 47 66 72 53 46 66 70 53 46 64 68 Dewpt 45 42 47 45 44 41 45 43 41 39 43 43 41 39 42 41 PWind dir S S S SW SW W W W Wind char LT LT LT LT GN LT LT LT Avg clouds FW FW FW CL CL FW FW FW FW FW FW SC FW SC SC SC PoP 12hr 0 0 0 0 0 0 0 5 $$ MTZ319-172200- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 79 50 75 52 69 Temp 64 75 76 64 59 54 51 55 66 72 68 61 59 55 53 54 60 65 67 Dewpt 44 47 51 50 50 48 47 49 51 50 54 51 51 50 50 50 51 50 52 RH 48 37 42 60 72 80 86 80 58 46 61 70 75 83 89 86 72 58 59 Wind dir E E SE SW W SW N N NW NW W NW NW NW NW NW NW NW N Wind spd 3 5 5 8 4 3 0 0 2 6 8 9 4 3 2 3 2 4 2 Clouds SC B1 B1 B1 SC SC B1 SC OV OV OV OV OV OV B2 B2 B2 B2 B1 PoP 12hr 10 50 50 100 80 QPF 12hr 0 0 0.04 0.43 0.13 Snow 12hr 00-00 00-00 00-00 Rain D D D D L Rain shwrs C C S D D L Tstms S S C S S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 48 76 48 78 48 78 48 78 Temp 55 48 66 73 56 48 68 74 57 48 69 74 56 48 68 73 Dewpt 46 43 49 44 42 41 44 42 39 39 41 40 39 39 42 42 PWind dir W NE S S SW SW W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC FW CL CL FW FW CL FW FW FW CL FW SC FW FW PoP 12hr 10 0 0 0 0 0 0 5 $$ MTZ326-172200- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 48 74 46 65 Temp 64 73 76 62 57 53 50 54 66 72 68 58 54 51 48 51 55 59 65 Dewpt 47 50 53 52 50 50 49 50 53 54 52 54 52 51 48 51 52 53 51 RH 54 44 45 70 77 89 96 86 63 53 57 86 93100100100 90 80 60 Wind dir NW S SE SE W S N N W NW W W N W W W W NW N Wind spd 2 3 4 8 5 3 0 0 2 3 3 4 0 1 1 3 2 2 0 Clouds B1 B2 B2 SC SC SC B2 B1 B1 OV OV OV OV OV OV OV OV OV B2 PoP 12hr 30 10 50 90 90 QPF 12hr 0 0.01 0.06 0.31 0.46 Snow 12hr 00-00 00-00 00-00 Rain D D D Rain shwrs S C S S S L D D D D D C Tstms S S C C S S S C S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 42 74 42 77 43 78 43 79 Temp 51 43 61 72 51 45 67 75 52 45 68 75 53 45 68 75 Dewpt 48 43 48 45 44 41 44 42 41 38 42 41 40 38 42 43 PWind dir SE S E SW SE SW SE SW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC FW FW FW FW CL FW FW FW FW FW FW FW FW PoP 12hr 40 5 0 0 0 0 0 5 Rain C Rain shwrs C Tstms S $$ MTZ330-172200- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 71 39 67 36 61 Temp 63 67 66 54 48 44 42 46 60 62 61 51 46 41 37 42 53 56 59 Dewpt 49 50 49 48 46 44 42 46 50 48 48 46 45 41 37 42 45 43 44 RH 60 54 54 80 93100100100 69 60 62 83 96100100100 74 62 57 Wind dir N SW SE NE N N N N SW SW SW N N N N N N W W Wind spd 0 8 5 2 0 0 0 0 2 4 1 0 0 0 0 0 0 3 2 Wind gust 18 13 Clouds B2 B2 B1 SC B1 B1 B2 B1 B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 PoP 12hr 70 50 80 80 70 QPF 12hr 0.11 0.03 0.15 0.13 0.15 Snow 12hr 00-00 00-00 00-00 Rain D D L L Rain shwrs L L S S C C C C L D D D L L C Tstms C C S S C C C S S C S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 31 67 30 71 32 71 32 71 Temp 43 33 57 65 43 32 63 68 44 33 64 68 44 33 64 67 Dewpt 42 33 43 36 37 32 39 31 34 31 35 30 32 30 35 32 PWind dir W W N SW SW SW SW SW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 FW SC FW FW CL FW FW FW FW FW FW SC FW PoP 12hr 40 5 0 0 0 0 0 5 Rain shwrs C Tstms S $$ MTZ328-172200- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 47 70 44 66 Temp 63 74 74 61 55 50 48 52 62 65 65 54 51 47 45 49 55 61 65 Dewpt 46 49 49 49 49 47 46 49 50 48 49 48 48 46 45 48 49 49 51 RH 54 41 41 65 80 89 93 89 65 54 56 80 89 96100 96 80 65 60 Wind dir N S S S S S S SW N SW SW SW S SW SW NW NW N N Wind spd 2 5 13 10 8 4 4 3 2 5 6 5 4 4 4 4 2 3 4 Clouds B1 B1 SC SC SC B1 B1 B1 B2 OV OV OV OV OV B2 B2 B2 B2 B1 PoP 12hr 40 30 60 80 80 QPF 12hr 0.01 0 0.19 0.20 0.14 Snow 12hr 00-00 00-00 00-00 Rain D D D D Rain shwrs C C S S S C C C D D D L L C Tstms S C S C C C S S S S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 41 73 42 77 43 77 43 78 Temp 49 42 60 72 51 43 67 74 52 43 66 74 52 43 68 73 Dewpt 46 42 47 42 41 39 43 38 38 35 40 37 37 35 39 39 PWind dir W SW SE SW S SW S SW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC FW CL CL FW CL CL FW FW FW CL FW SC FW FW PoP 12hr 30 0 0 0 0 0 0 5 Rain C Rain shwrs C Tstms S $$ MTZ305-172200- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 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 78 49 77 49 72 Temp 67 75 76 62 56 53 51 55 68 75 74 63 57 53 50 54 65 69 70 Dewpt 47 49 50 49 51 50 50 50 51 51 50 50 51 50 49 49 50 50 49 RH 49 40 40 62 83 89 96 83 54 43 43 62 80 89 96 83 58 51 47 Wind dir E SE E E E NE W W NW N N NE NE NE NE NE NE E E Wind spd 6 9 10 9 4 2 1 4 5 8 10 10 6 5 5 6 8 8 9 Clouds FW FW SC B2 B1 B1 B2 SC SC B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 0 10 5 0 20 QPF 12hr 0 0 0 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain S S S S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 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 47 76 47 80 49 80 48 80 Temp 54 48 66 75 55 49 72 77 57 49 71 75 56 49 71 75 Dewpt 50 47 50 48 50 48 50 47 47 45 46 46 45 44 45 45 PWind dir E SE SE S S SW S NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC B1 FW FW FW FW CL FW FW FW FW FW FW SC FW PoP 12hr 5 0 0 0 0 0 0 5 $$ MTZ314-172200- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 1116 AM MDT Thu Sep 17 2026 Date Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 MDT 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 50 75 48 64 Temp 68 75 75 61 57 55 52 57 68 71 69 60 56 54 51 49 55 58 63 Dewpt 45 47 47 46 45 45 45 47 50 50 50 52 52 51 49 48 51 51 49 RH 43 37 37 58 64 69 77 69 52 47 51 75 86 90 93 96 86 77 60 Wind dir E E SE SE S S SW W NW N NW NW W N NW N N N N Wind spd 3 4 4 5 4 3 2 2 5 6 5 4 3 3 3 4 4 5 4 Clouds SC SC B2 B2 SC SC SC SC B1 B2 OV OV OV OV OV OV B2 B2 B2 PoP 12hr 5 5 20 70 80 QPF 12hr 0 0 0.02 0.34 0.53 Snow 12hr 00-00 00-00 00-00 Rain D D D D Rain shwrs L L D D C Tstms S S S S Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed 09/23/26 MDT 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 45 71 45 78 47 78 47 79 Temp 52 46 62 71 53 48 70 74 55 48 72 74 56 48 71 73 Dewpt 48 44 47 45 46 43 43 43 43 39 39 42 41 38 40 42 PWind dir W NW SE SW S SW S W Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 FW FW FW FW CL CL FW FW FW FW FW SC FW PoP 12hr 50 10 0 0 0 0 0 5 Rain C C Rain shwrs C Tstms S $$ http://www.weather.gov/greatfalls