FPUS65 KTFX 200631 SFTTFX MTZ301>330-211100- Tabular State Forecast for North Central and Southwest Montana National Weather Service Great Falls MT 1231 AM MDT Wed May 20 2026 ROWS INCLUDE... Daily predominant daytime weather 6AM-6PM Forecast temperatures...early morning low/daytime high Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM - indicates temperatures below zero MM indicates missing data FCST FCST FCST FCST FCST FCST FCST Thu Fri Sat Sun Mon Tue Wed May 21 May 22 May 23 May 24 May 25 May 26 May 27 ...CENTRAL MONTANA... Great Falls Mocldy Ptcldy Sunny Sunny Ptcldy Rain Rain 36/60 37/70 44/77 49/81 52/82 50/71 45/67 60/20 00/00 00/00 00/00 00/10 30/50 50/50 Cut Bank Ptcldy Ptcldy Ptcldy Sunny Ptcldy Ptcldy Ptcldy 33/62 37/69 42/74 46/78 49/77 45/66 41/64 20/10 00/00 00/00 00/00 00/10 40/40 50/40 Havre Mocldy Sunny Sunny Sunny Sunny Ptcldy Ptcldy 34/65 35/73 42/80 48/84 51/86 50/79 47/71 10/20 00/00 00/00 00/00 00/10 10/20 40/30 Helena Ptcldy Ptcldy Sunny Sunny Ptcldy Rain Ptcldy 36/61 37/70 41/77 45/80 46/81 45/70 43/65 90/20 00/00 00/00 00/00 00/20 30/50 50/40 Lewistown Mocldy Sunny Sunny Sunny Ptcldy Ptcldy Rain 33/55 33/66 39/73 45/77 47/80 47/71 43/63 60/40 00/00 00/00 00/00 00/10 20/40 50/50 Shelby Ptcldy Ptcldy Ptcldy Sunny Ptcldy Ptcldy Ptcldy 34/63 37/71 43/77 47/81 49/80 46/70 44/67 20/10 00/00 00/00 00/00 00/10 40/30 40/30 Chester Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Ptcldy 33/63 36/72 41/78 45/82 47/82 46/73 44/69 10/10 00/00 00/00 00/00 00/10 30/20 40/30 Chinook Ptcldy Sunny Sunny Sunny Sunny Ptcldy Ptcldy 36/65 37/73 43/80 48/84 50/86 50/79 47/73 10/10 00/00 00/00 00/00 00/10 10/20 30/30 Conrad Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Ptcldy 34/63 37/71 43/77 47/81 49/80 46/69 43/66 30/10 00/00 10/00 00/00 00/10 30/40 50/40 Choteau Ptcldy Ptcldy Sunny Sunny Ptcldy Rain Ptcldy 33/61 36/70 42/77 47/81 50/80 47/69 43/66 40/10 00/10 00/00 00/00 00/10 30/50 50/40 Fort Benton Mocldy Sunny Sunny Sunny Ptcldy Ptcldy Ptcldy 37/64 38/74 44/81 49/85 51/86 50/76 47/70 20/20 00/00 00/00 00/00 00/10 20/30 50/40 Stanford Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy Ptcldy 35/56 35/65 43/73 49/77 51/80 51/69 45/63 70/20 00/00 00/00 00/00 00/20 10/40 50/40 White Sulphur Springs Ptcldy Ptcldy Sunny Sunny Ptcldy Rain Ptcldy 33/55 31/64 37/72 43/76 45/79 45/67 39/62 80/20 00/00 00/00 00/00 00/20 10/50 50/40 ...SOUTHWEST MONTANA... Bozeman Airport Rain Sunny Sunny Sunny Sunny Ptcldy Ptcldy 33/56 31/66 36/75 43/80 45/82 46/72 42/65 90/50 00/00 00/00 10/00 20/10 10/40 50/40 Bozeman MSU Rain Sunny Sunny Sunny Sunny Shwrs Ptcldy 35/54 33/6539/73 46/79 48/81 48/71 44/64 90/70 00/00 00/00 10/00 20/10 10/50 50/40 West Yellowstone Mocldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 28/51 23/62 30/68 34/75 37/77 38/67 32/61 90/40 00/00 00/00 10/20 20/20 10/20 30/30 Dillon Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 33/58 32/66 38/75 43/80 44/81 44/69 38/63 80/30 00/00 00/00 10/00 00/10 10/40 40/30 Boulder Ptcldy Ptcldy Sunny Sunny Ptcldy Rain Ptcldy 35/57 35/67 41/74 45/78 47/78 46/67 41/62 90/20 00/00 00/00 10/10 00/20 20/50 50/40 Townsend Ptcldy Ptcldy Sunny Sunny Ptcldy Ptcldy Ptcldy 39/60 38/68 43/75 48/80 50/82 49/71 45/67 90/10 00/00 00/00 10/20 00/10 20/40 50/30 Virginia City Snow Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy 34/49 32/59 39/67 45/71 48/73 47/63 40/57 90/50 00/00 00/00 10/20 00/20 10/40 50/40 $$ http://www.weather.gov/greatfalls