CHEYENNE, Wyo. — Cheyenne will experience elevated fire weather concerns as above-average temperatures persist through the weekend, according to the National Weather Service in Cheyenne. Overnight temperatures remain mild, with most areas settling in the 60s and 70s.
Friday will see isolated thunderstorms mainly along and east of a Cheyenne–Wheatland–Chadron line. These storms may produce gusty winds, small hail and lightning.
Surface temperatures will increase rapidly after daybreak, reaching daytime highs by noon. Cumulus clouds and monsoonal moisture arriving by midday will contribute to showers and isolated thunderstorms, with peak activity around 2 p.m. Dry air west of the Laramie Range may result in dry thunderstorms.
Wind gusts of at least 50–65 mph are the primary hazards from thunderstorms. Brief, heavy rainfall may cause isolated flooding along Interstate 80 from Cheyenne to Sidney. Gusty winds from dry microbursts could pose wildfire risks.
Hot and mostly dry conditions are expected through the weekend. Daytime highs on Saturday and Sunday may reach the upper 90s in southeast Wyoming, potentially breaking daily records. Wind speeds will increase in the afternoons, raising fire weather concerns. Monsoonal moisture may bring isolated showers on Sunday, but confidence in significant rainfall is low.
Early next week, temperatures will remain high, with the upper 80s to mid-90s expected on Monday and Tuesday. A cold front may arrive midweek, potentially lowering temperatures to the mid-70s by Thursday. Scattered thunderstorms may occur Tuesday afternoon, with strong to severe storms possible.
Detailed Forecast for Cheyenne
- Today: There is a 40% chance of showers and thunderstorms after noon. Clouds will increase during the hot day, which will have a high near 92. A west wind will shift to the east-southeast at 10–15 mph in the afternoon.
- Tonight: There is a 20% chance of showers and thunderstorms before midnight. The sky will be mostly clear, with a low around 57. The east-southeast wind will shift to the west at 5–15 mph after midnight.
- Saturday: It will be sunny and hot, with a high near 93. A west-northwest wind will shift to the east-southeast at 5–10 mph in the afternoon.
- Saturday Night: The sky will be partly cloudy, with a low around 61. The east-southeast wind will shift to the southwest at 5–10 mph after midnight.
- Sunday: There is a chance of rain before noon, then a chance of showers and thunderstorms between noon and 3 p.m., followed by a slight chance of thunderstorms. It will be mostly sunny and hot, with a high near 95. A south-southwest wind will blow at 5–10 mph. The chance of precipitation is 40%.
- Sunday Night: There is a 30% chance of showers and thunderstorms before midnight. The sky will be mostly cloudy, with a low around 63.
- Monday: There is a 30% chance of showers and thunderstorms after noon. It will be mostly sunny and hot, with a high near 90.
- Monday Night: There is a chance of showers and thunderstorms before midnight. The sky will be mostly cloudy, with a low around 59.
