| NWS Forecast for: Petroleum County Issued by: National Weather Service Glasgow, MT Last Update: 351 PM MDT Wed Apr 15 2026 | |
Tonight: Showers likely with a slight chance of thunderstorms this evening, then showers after midnight. Lows in the lower 30s. West wind 10 to 15 mph. Chance of rain 80 percent. Thursday: Mostly cloudy in the morning, then becoming partly sunny. A slight chance of snow showers. A chance of rain showers, mainly in the morning. Breezy and much cooler with highs in the mid 40s. Northwest wind 20 to 25 mph with gusts up to 35 mph. Chance of precipitation 50 percent. Thursday Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 20s. Northwest wind 15 to 20 mph, decreasing to 5 to 10 mph after midnight. Friday: A slight chance of rain and snow showers in the afternoon. Highs in the mid 40s. Northwest wind 5 to 10 mph, increasing to around 15 mph in the afternoon. Chance of precipitation 20 percent. Friday Night: Partly cloudy. Lows in the mid 20s. Northwest wind 10 to 15 mph, becoming west around 5 mph after midnight. Saturday: Sunny. Highs in the upper 50s. Saturday Night: Partly cloudy. Lows in the lower 30s. Sunday: Sunny. Highs around 70. Sunday Night: Partly cloudy. Lows in the lower 40s. Monday: Sunny. Highs in the mid 70s. Monday Night: Partly cloudy. Lows in the lower 40s. Tuesday: Sunny. Highs in the upper 70s. Tuesday Night: Partly cloudy. Lows in the upper 40s. Wednesday: A chance of showers with a slight chance of thunderstorms. Highs in the lower 70s. | |
| Zone Forecast: Petroleum County | |
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