| NWS Forecast for: Shirley Basin Issued by: National Weather Service Cheyenne, WY Last Update: 247 PM MDT Mon May 18 2026 |  |
This Afternoon: Snow showers with a slight chance of thunderstorms. Additional snow accumulation up to 1 inch. Much cooler. Near steady temperature in the lower 30s. Northeast winds 10 to 15 mph with gusts up to 30 mph. Chance of snow near 100 percent. Tonight: Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Little or no snow accumulation. Total snow accumulation 5 to 7 inches. Cold with lows around 17. North winds 5 to 10 mph with gusts up to 20 mph, becoming northwest after midnight. Chance of snow 50 percent. Tuesday: Partly sunny in the morning, then clearing. Widespread frost. Highs in the upper 30s. Southwest winds around 5 mph. Tuesday Night: Mostly clear in the evening, then becoming partly cloudy. Widespread frost. Cold with lows in the lower 20s. South winds around 5 mph. Wednesday: Widespread frost in the morning. Mostly sunny. Highs in the upper 40s. Southwest winds 5 to 10 mph. Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the upper 20s. Thursday: Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 50 percent. Thursday Night: Mostly cloudy. Rain showers likely with a chance of thunderstorms in the evening, then a chance of rain and snow showers after midnight. Little or no snow accumulation. Cold with lows in the lower 30s. Chance of precipitation 60 percent. Friday: Partly sunny. A chance of rain and snow showers in the morning. Highs in the mid 50s. Chance of precipitation 40 percent. Friday Night: Mostly cloudy in the evening, then clearing. Lows in the lower 30s. Saturday And Saturday Night: Mostly clear. Highs in the mid 60s. Lows in the upper 30s. Sunday: Sunny. Highs around 70. | |
| Zone Forecast: Shirley Basin | |
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