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Great Falls Intl, MT Weather Forecast
Great Falls Intl, MT Weather Forecast Dated: 751 PM Tue Aug 18 2026 (Great Falls Intl Time)
Tue, 18th Lo: 14°C57°F Hi: 32°C89°F |
Overcast Tuesday, temperatures as high as 89°F32°C, low temperature around 57°F14°C, chance of rain 5%, wind out of the SW 13 mph22 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 39%. |
Wed, 19th Lo: 17°C62°F Hi: 32°C90°F |
Sunny Wednesday, temperatures as high as 90°F32°C, low temperature around 62°F17°C, chance of rain 4%, wind out of the WSW 14 mph23 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 26%. |
| Thu, 20th Lo: 17°C63°F Hi: 34°C94°F |
Sunny Thursday, temperatures as high as 94°F34°C, low temperature around 63°F17°C, chance of rain 1%, wind out of the WSW 12 mph20 km/h. Barometric pressure 29.91 in1013 mb, visibility 6 mi10 km, humidity 24%. |
| Fri, 21st Lo: 18°C64°F Hi: 33°C92°F |
Sunny Friday, temperatures as high as 92°F33°C, low temperature around 64°F18°C, chance of rain 2%, wind out of the N 13 mph21 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 25%. |
| Sat, 22nd Lo: 21°C70°F Hi: 37°C99°F |
Overcast Saturday, temperatures as high as 99°F37°C, low temperature around 70°F21°C, chance of rain 36%, wind out of the SSW 24 mph38 km/h. Barometric pressure 29.8 in1009 mb, visibility 6 mi10 km, humidity 33%. |
| Sun, 23rd Lo: 16°C61°F Hi: 33°C91°F |
Sunny Sunday, temperatures as high as 91°F33°C, low temperature around 61°F16°C, wind out of the WSW 8 mph13 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 26%. |
| Mon, 24th Lo: 16°C61°F Hi: 33°C92°F |
Sunny Monday, temperatures as high as 92°F33°C, low temperature around 61°F16°C, wind out of the SSE 13 mph21 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 19%. |
| Tue, 25th Lo: 18°C64°F Hi: 33°C91°F |
Sunny Tuesday, temperatures as high as 91°F33°C, low temperature around 64°F18°C, chance of rain 1%, wind out of the ESE 18 mph29 km/h. Barometric pressure 30.03 in1017 mb, visibility 6 mi10 km, humidity 22%. |
| Wed, 26th Lo: 18°C64°F Hi: 34°C93°F |
Sunny Wednesday, temperatures as high as 93°F34°C, low temperature around 64°F18°C, chance of rain 2%, wind out of the ESE 19 mph31 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi10 km, humidity 28%. |
| Thu, 27th Lo: 18°C64°F Hi: 32°C90°F |
Overcast Thursday, temperatures as high as 90°F32°C, low temperature around 64°F18°C, chance of rain 57%, wind out of the SE 14 mph23 km/h. Barometric pressure 29.91 in1013 mb, visibility 6 mi10 km, humidity 38%. |
| Fri, 28th Lo: 17°C63°F Hi: 33°C92°F |
Overcast Friday, temperatures as high as 92°F33°C, low temperature around 63°F17°C, chance of rain 7%, wind out of the S 16 mph25 km/h. Barometric pressure 29.85 in1011 mb, visibility 6 mi10 km, humidity 49%. |
| Sat, 29th Lo: 17°C63°F Hi: 32°C90°F |
Sunny Saturday, temperatures as high as 90°F32°C, low temperature around 63°F17°C, chance of rain 1%, wind out of the SSE 21 mph33 km/h. Barometric pressure 29.85 in1011 mb, visibility 6 mi10 km, humidity 44%. |
| Sun, 30th Lo: 18°C64°F Hi: 35°C94°F |
Sunny Sunday, temperatures as high as 94°F35°C, low temperature around 64°F18°C, chance of rain 36%, wind out of the ESE 15 mph23 km/h. Barometric pressure 29.74 in1007 mb, visibility 6 mi10 km, humidity 38%. |
| Mon, 31st Lo: 16°C60°F Hi: 32°C89°F |
Sunny Monday, temperatures as high as 89°F32°C, low temperature around 60°F16°C, chance of rain 36%, wind out of the SSW 15 mph24 km/h. Barometric pressure 29.68 in1005 mb, visibility 6 mi10 km, humidity 48%. |
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