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Castle Lake, MT Weather Forecast
Castle Lake, MT Weather Forecast Dated: 911 PM Tue Aug 25 2026 (Castle Lake Time)
Tue, 25th Lo: 8°C47°F Hi: 18°C64°F |
Thundery outbreaks in nearby Tuesday, temperatures as high as 64°F18°C, low temperature around 47°F8°C, chance of rain 9%, wind out of the NNE 3 mph5 km/h. Barometric pressure 30.18 in1022 mb, visibility 6 mi9 km, humidity 42%. |
Wed, 26th Lo: 10°C50°F Hi: 20°C69°F |
Partly Cloudy Wednesday, temperatures as high as 69°F20°C, low temperature around 50°F10°C, chance of rain 2%, wind out of the NW 3 mph4 km/h. Barometric pressure 30.09 in1019 mb, visibility 6 mi10 km, humidity 30%. |
| Thu, 27th Lo: 12°C53°F Hi: 22°C72°F |
Thundery outbreaks in nearby Thursday, temperatures as high as 72°F22°C, low temperature around 53°F12°C, chance of rain 10%, wind out of the SW 9 mph14 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi9 km, humidity 28%. |
Fri, 28th Lo: 9°C49°F Hi: 21°C69°F |
Overcast Friday, temperatures as high as 69°F21°C, low temperature around 49°F9°C, chance of rain 8%, wind out of the WSW 9 mph14 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 21%. |
Sat, 29th Lo: 7°C45°F Hi: 16°C60°F |
Sunny Saturday, temperatures as high as 60°F16°C, low temperature around 45°F7°C, chance of rain 2%, wind out of the WSW 6 mph9 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 46%. |
| Sun, 30th Lo: 5°C41°F Hi: 17°C63°F |
Sunny Sunday, temperatures as high as 63°F17°C, low temperature around 41°F5°C, chance of rain 1%, wind out of the WSW 7 mph12 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 28%. |
Mon, 31st Lo: 8°C46°F Hi: 18°C65°F |
Chance of showers Monday, temperatures as high as 65°F18°C, low temperature around 46°F8°C, chance of rain 10%, wind out of the SW 6 mph10 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 39%. |
| Tue, 1st Lo: 7°C45°F Hi: 24°C75°F |
Sunny Tuesday, temperatures as high as 75°F24°C, low temperature around 45°F7°C, wind out of the SW 12 mph19 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 22%. |
| Wed, 2nd Lo: 3°C38°F Hi: 15°C59°F |
Sunny Wednesday, temperatures as high as 59°F15°C, low temperature around 38°F3°C, chance of rain 1%, wind out of the WSW 32 mph51 km/h. Barometric pressure 29.74 in1007 mb, visibility 6 mi10 km, humidity 32%. |
| Thu, 3rd Lo: 2°C35°F Hi: 18°C64°F |
Sunny Thursday, temperatures as high as 64°F18°C, low temperature around 35°F2°C, wind out of the WSW 7 mph11 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 25%. |
| Fri, 4th Lo: 8°C46°F Hi: 18°C65°F |
Overcast Friday, temperatures as high as 65°F18°C, low temperature around 46°F8°C, chance of rain 9%, wind out of the SW 12 mph19 km/h. Barometric pressure 29.85 in1011 mb, visibility 6 mi10 km, humidity 20%. |
| Sat, 5th Lo: 3°C38°F Hi: 11°C52°F |
Light rain shower Saturday, temperatures as high as 52°F11°C, low temperature around 38°F3°C, chance of rain 76%, wind out of the NNW 1 mph2 km/h. Barometric pressure 29.83 in1010 mb, visibility 6 mi10 km, humidity 86%. |
Sun, 6th Lo: -6°C22°F Hi: 3°C37°F |
Moderate or heavy snow showers Sunday, temperatures as high as 37°F3°C, low temperature around 22°F-6°C, probability of precipitation 41%, wind out of the WSW 6 mph9 km/h. Barometric pressure 29.94 in1014 mb, visibility 4 mi7 km, humidity 78%. |
| Mon, 7th Lo: -7°C19°F Hi: 6°C43°F |
Partly Cloudy Monday, temperatures as high as 43°F6°C, low temperature around 19°F-7°C, probability of precipitation 7%, wind out of the WSW 8 mph13 km/h. Barometric pressure 30.12 in1020 mb, visibility 6 mi10 km, humidity 59%. |
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