Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
415 FOUS55 KTFX 132351 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 551 PM MDT Sun Sep 13 2026 MTZ312-141000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed 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 45 64 42 66 45 Temp 66 56 51 48 45 48 56 59 61 54 47 44 42 46 56 62 64 56 49 47 45 Dewpt 46 47 46 43 39 38 40 40 41 42 41 40 40 40 41 42 43 43 43 43 44 RH 48 72 83 83 79 68 55 49 48 64 79 86 93 79 57 48 46 62 80 86 96 Wind dir NW NW W SW SW W W NW NW SW S SE E E NE NE NE NE N N NW Wind spd 10 6 6 11 19 25 26 23 10 4 3 3 3 2 3 8 11 11 8 5 4 Wind gust 31 36 34 23 Clouds B2 OV B2 SC SC B2 B2 B2 B1 B1 SC SC SC B2 B1 B2 B2 OV B2 B2 B1 PoP 12hr 80 30 10 0 20 QPF 12hr 0.12 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L D C C S S Tstms S Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 44 73 47 70 47 72 48 71 Temp 54 61 47 44 64 70 52 48 62 67 52 48 64 69 53 48 63 68 Dewpt 44 43 42 40 44 44 45 44 46 46 46 44 46 44 43 42 44 43 PWind dir NW SE SW NW W S S S W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC FW FW FW CL FW SC SC SC B1 SC SC SC SC SC SC SC PoP 12hr 10 0 0 20 20 30 20 10 5 Rain shwrs S S C S S $$ MTZ303-141000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 41 58 40 56 41 Temp 58 49 46 42 42 47 51 55 56 48 46 42 41 44 50 54 55 48 46 43 41 Dewpt 43 41 39 36 36 39 42 42 42 42 42 41 41 41 43 43 43 44 43 42 41 RH 57 74 76 79 79 74 71 61 59 80 86 96100 89 77 66 64 86 89 96100 Wind dir W W W SW W W NW NW NW NW NW SW SE SE SE E E NE NE N N Wind spd 10 11 12 14 17 26 31 25 11 5 3 2 2 3 9 9 8 5 5 4 4 Wind gust 25 31 42 46 39 25 Clouds B1 B2 B1 SC SC B1 B1 B1 B1 B2 B2 B2 OV B2 OV OV B2 OV B2 B1 B1 PoP 12hr 5 50 50 30 50 QPF 12hr 0 0.02 0.08 0 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S C C C C C C C Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 60 40 68 43 66 44 68 45 67 Temp 52 57 45 40 60 65 49 44 61 64 49 44 61 65 50 45 61 64 Dewpt 43 42 41 38 43 43 42 41 46 46 45 42 46 45 43 41 45 45 PWind dir S S W N N S SW SW W Wind char LT LT LT LT LT LT LT GN LT Avg clouds B1 FW FW FW FW FW CL FW SC FW FW SC SC SC SC SC SC SC PoP 12hr 10 0 0 5 5 10 10 10 5 $$ MTZ319-141000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed 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 44 64 38 70 46 Temp 66 57 54 49 45 49 56 59 61 53 48 43 40 45 58 65 68 57 54 49 46 Dewpt 44 41 41 39 39 37 38 37 37 37 38 37 38 36 38 37 39 39 42 41 41 RH 45 55 61 68 79 63 51 44 41 54 68 79 92 70 47 35 34 51 64 74 83 Wind dir NW W W SW S W W W W W SW SW N N E NE N NW NW NW NW Wind spd 12 12 10 9 9 14 24 21 11 5 5 2 0 0 3 6 9 13 11 8 5 Wind gust 19 29 36 34 26 Clouds B1 B2 B1 B1 SC B1 SC SC SC SC SC SC SC B1 SC B1 B1 B2 B2 B2 B1 PoP 12hr 60 10 0 0 10 QPF 12hr 0.06 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C Tstms S Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 67 44 77 48 73 46 74 47 74 Temp 57 63 51 44 65 74 57 48 64 69 55 46 65 70 55 47 65 70 Dewpt 43 40 41 40 43 42 44 44 46 43 44 43 44 40 41 41 41 38 PWind dir N W E NW NW W SW W W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC FW FW FW CL B1 B1 B1 B1 B1 SC SC SC SC SC SC SC PoP 12hr 5 0 0 40 40 30 20 10 10 Rain shwrs C C C C C S S S Tstms S $$ MTZ326-141000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 40 63 34 72 37 Temp 74 57 49 45 42 45 54 59 61 49 43 39 36 44 60 69 71 56 47 41 38 Dewpt 37 44 46 45 42 41 36 36 37 41 41 39 36 36 37 37 40 41 42 41 38 RH 26 62 89100100 86 50 42 41 74 93100100 73 42 31 32 57 83100100 Wind dir SW NW W W S SW W W NW E SE SE SE N N N E E E E N Wind spd 14 13 12 8 6 10 16 19 11 3 4 3 2 0 2 4 6 8 4 1 0 Wind gust 26 26 29 32 26 Clouds FW SC B2 B1 SC SC B1 B2 SC SC SC FW SC FW FW FW SC SC SC SC SC PoP 12hr 80 20 0 0 0 QPF 12hr 0.14 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs D C S Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 69 38 75 43 72 40 72 41 72 Temp 58 66 45 41 65 72 51 45 64 69 48 42 64 69 48 43 65 70 Dewpt 42 42 44 41 44 45 47 45 48 45 45 42 44 40 42 39 41 39 PWind dir NW E SW SE SW E SW E SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW B1 B1 B1 B1 B1 SC SC SC FW SC SC SC PoP 12hr 5 0 10 50 40 30 20 20 10 Rain shwrs C C C C C S S S S Tstms S $$ MTZ330-141000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed 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 28 58 25 66 29 Temp 64 51 45 36 29 35 50 56 56 45 37 31 27 36 59 65 63 49 40 33 29 Dewpt 24 25 32 33 29 28 27 24 24 27 28 28 27 27 29 22 22 26 26 26 27 RH 22 36 60 89100 75 41 29 29 49 70 88100 69 32 19 21 40 57 75 92 Wind dir SW SW SW SW SW SW SW W W N N N N N SW SW SW N N N N Wind spd 21 10 23 17 13 19 17 13 6 0 0 0 0 0 6 11 8 0 0 0 0 Wind gust 33 33 27 24 18 23 Clouds FW B1 B2 SC SC FW FW B1 B1 FW FW SC SC FW CL FW FW SC SC SC SC PoP 12hr 30 5 0 0 0 QPF 12hr 0.03 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 32 71 35 66 30 65 30 67 Temp 64 64 41 34 65 65 45 36 59 62 41 31 59 63 40 30 61 64 Dewpt 35 29 36 34 43 41 42 36 43 35 37 31 38 30 32 30 34 30 PWind dir SW NE SW SE SW SW SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW SC SC B1 B2 B2 B1 B1 SC SC SC FW FW SC SC SC PoP 12hr 0 20 40 60 40 20 10 5 5 Rain shwrs S C L L C C S S Tstms S S $$ MTZ328-141000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 38 63 33 72 38 Temp 70 55 48 42 38 44 55 61 61 48 42 37 35 43 60 69 71 56 48 42 38 Dewpt 29 30 38 38 34 34 33 32 34 34 35 34 32 34 34 32 33 33 36 36 35 RH 22 38 68 86 85 68 43 33 36 58 76 89 89 70 37 25 25 42 63 79 89 Wind dir W SW SW SW S SW W W N E S S S S N N NE NE N NE E Wind spd 18 11 11 10 13 19 18 11 6 4 4 4 4 3 2 3 6 9 9 5 4 Wind gust 28 28 21 17 Clouds FW SC SC SC FW FW SC FW FW SC SC FW SC FW FW FW SC B1 B1 SC SC PoP 12hr 20 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 70 38 74 42 70 39 71 39 72 Temp 60 66 46 40 66 71 50 43 64 66 48 40 64 69 48 40 65 70 Dewpt 40 39 41 38 41 42 45 43 45 41 42 39 41 37 38 36 38 35 PWind dir NE E S SE SW S SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC FW FW SC FW FW B1 B1 B1 B1 SC SC SC FW FW SC SC FW PoP 12hr 5 5 10 50 30 20 10 10 5 Rain shwrs C C C C S Tstms S $$ MTZ305-141000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed 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 63 41 66 45 Temp 70 58 54 50 48 50 55 59 58 51 47 44 43 47 58 64 62 53 50 47 45 Dewpt 45 46 49 46 42 41 43 45 46 45 45 44 43 43 45 43 43 43 43 43 42 RH 41 64 83 86 80 71 64 60 64 80 93100100 86 62 46 50 69 77 86 89 Wind dir SE NE W W SW W W NW NW W W SW N E E E E E E E E Wind spd 13 9 10 12 14 18 23 28 20 10 5 2 0 3 8 10 12 12 10 8 8 Wind gust 33 39 34 Clouds FW OV B2 B2 SC SC B1 OV SC B1 SC B1 B2 B2 B2 B2 OV OV OV OV B2 PoP 12hr 90 60 10 5 60 QPF 12hr 0.25 0.02 0 0 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L S S S C L C C L L Tstms S Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 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 67 43 74 46 73 46 73 47 72 Temp 60 62 47 45 66 71 53 47 66 69 53 47 66 69 54 48 64 69 Dewpt 46 42 43 41 46 46 45 44 48 47 47 46 49 48 47 45 47 47 PWind dir NE SE SW NE NE E S SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC FW FW FW CL FW FW SC FW SC SC SC SC SC SC SC FW PoP 12hr 10 0 0 0 10 20 20 10 5 Rain shwrs S S S $$ MTZ314-141000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 551 PM MDT Sun Sep 13 2026 Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 43 59 37 68 41 Temp 72 57 51 46 43 45 48 53 57 50 45 40 38 44 55 63 67 55 50 44 41 Dewpt 44 47 47 44 42 38 37 40 41 41 41 38 37 39 40 40 41 40 40 39 39 RH 37 69 86 93 96 76 65 61 55 71 86 92 96 82 57 43 39 57 68 82 92 Wind dir SE W W W W W W W NW W W S SE SE SE SE SE E E E E Wind spd 6 9 12 12 12 19 28 32 24 9 4 3 3 3 3 5 9 13 8 3 2 Wind gust 25 23 24 31 43 37 23 Clouds SC FW B2 B2 B1 B1 B2 B2 OV B1 SC B1 SC SC SC SC B1 B2 B2 B2 B1 PoP 12hr 70 40 10 0 5 QPF 12hr 0.02 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L S S S High Wind A A A Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 64 41 75 46 71 44 70 46 70 Temp 52 61 47 43 65 72 53 47 62 68 51 45 61 67 51 47 62 67 Dewpt 43 42 41 39 43 44 44 43 47 46 45 43 44 43 43 40 41 42 PWind dir NE SE E SE NW SE SE SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC FW FW FW FW SC B1 B1 B1 B1 SC SC B1 SC SC SC SC PoP 12hr 5 0 0 30 40 30 30 10 10 Rain shwrs C C C C S S C $$ http://www.weather.gov/greatfalls