CHEYENNE, Wyo. — High temperatures will continue through this afternoon before easing up midweek. Expect highs in the 80s and 90s today. The highest temperatures will be in the Nebraska Panhandle, according to the National Weather Service in Cheyenne.
Increased chances of rain and cooler temperatures are forecast from this afternoon through Wednesday. The weather will be more comfortable, with highs in the upper 70s to low 90s.
Isolated severe thunderstorms are expected today and Tuesday. Primary hazards include lightning, heavy rainfall and winds of up to 60 mph.
A dominant upper-level ridge pattern is keeping temperatures high. Overnight temperatures have been much above average, with readings in the 60s and 70s.
Monsoon moisture will bring a surge of humidity later today. Towering cumulus clouds are likely to develop into organized thunderstorms, especially near the Laramie Range. Southeast Wyoming could also experience strong wind gusts this afternoon.
Tuesday and Wednesday will bring a break from the heat. Showers and thunderstorms are possible, with severe storms expected both afternoons and early evenings. Hazards will include lightning, strong winds and large hail. Localized heavy rainfall could cause flooding if storms occur over the same areas.
Thursday will see continued southeasterly moisture, leading to storm development in the afternoon. Highs will reach the upper 80s to low 90s.
The weekend looks warmer and drier, though daily chances for precipitation remain. By Sunday, temperatures could return to the 90s across southeast Wyoming
Detailed Forecast for Cheyenne
- Today: There is a chance of showers and thunderstorms between noon and 3 p.m., followed by a slight chance of thunderstorms after 3. Some storms could be severe. It will be partly sunny and hot, with a high near 90. Expect a north wind around 15 mph. The chance of precipitation is 40%.
- Tonight: There is a slight chance of thunderstorms, increasing to a chance of showers and thunderstorms after 9 p.m. Some storms could be severe. It will be mostly cloudy, gradually becoming mostly clear, with a low around 56. Expect a west wind at 5–10 mph. The chance of precipitation is 40%.
- Tuesday: There is a chance of showers, with thunderstorms possible after noon. Some storms could be severe. It will be mostly sunny, with a high near 86. Expect a west wind at 5–10 mph, shifting to the east-northeast in the afternoon. The chance of precipitation is 50%.
- Tuesday Night: There is a 30% chance of showers and thunderstorms, mainly before midnight. Some storms could be severe. It will be partly cloudy, with a low around 56. Expect an east-northeast wind at 5–10 mph, shifting to the north-northwest after midnight.
- Wednesday: There is a chance of showers, then showers and thunderstorms likely after 9 a.m. It will be mostly sunny, with a high near 79. Expect a north-northwest wind at 5–10 mph, shifting to the south-southeast in the afternoon. The chance of precipitation is 60%.
- Wednesday Night: There is a 30% chance of showers and thunderstorms before midnight. It will be partly cloudy, with a low around 53.
- Thursday: There is a 40% chance of showers and thunderstorms after noon. It will be mostly sunny, with a high near 85.
- Thursday Night: It will be partly cloudy, with a low around 57.
- Friday: There is a chance of showers and thunderstorms after noon. It will be partly sunny, with a high near 87.
- Friday Night: There is a slight chance of showers and thunderstorms before midnight. It will be mostly cloudy, with a low around 56.
- Saturday: There is a chance of showers and thunderstorms. It will be mostly sunny, with a high near 82.
- Saturday Night: There is a slight chance of showers and thunderstorms. It will be partly cloudy, with a low around 53.
- Sunday: There is a chance of showers and thunderstorms. It will be mostly sunny, with a high near 79.
