CHEYENNE, Wyo. — Scattered thunderstorms with locally heavy rainfall are forecast in Cheyenne for the next few days, with a risk of isolated strong to severe storms. The National Weather Service in Cheyenne reports that a persistent monsoonal pattern will drive daily showers and storms through Friday. While severe weather chances are low, some storms could bring hail due to high instability.
Today, Cheyenne is expected to reach the 90s along and east of Interstate 25 despite the storms, with cooler highs likely later in the week. Increased moisture will support rain-heavy thunderstorms, with rainfall amounts well above normal. By the weekend, this pattern could weaken as a Pacific low shifts toward the northwest, reducing moisture and storm chances by Sunday. Temperatures should also dip into the low 80s by Sunday and Monday.
Conditions next week are expected to be drier, with warming temperatures as a blocking pattern erodes. Fire weather concerns could return by midweek as winds increase and humidity decreases.
Detailed Forecast for Cheyenne
- Today: Showers and thunderstorms are likely, mainly after 3 p.m. It will be mostly sunny, with a high near 89. Winds will shift from the west to the south-southwest at 5–15 mph. The chance of precipitation is 60%. New rainfall amounts will generally be less than a tenth of an inch, but higher amounts are possible in thunderstorms.
- Tonight: There is a 50% chance of showers and thunderstorms, mainly before midnight. It will be mostly cloudy, with a low around 60. West-southwest winds will blow at 10–15 mph.
- Thursday: A 50% chance of showers and thunderstorms is expected, mainly after noon. Skies will be mostly cloudy, with a high near 80. Winds will shift from the west-northwest to the east at 5–10 mph in the afternoon.
- Thursday night: There is a 30% chance of showers and thunderstorms before midnight. The night will be mostly cloudy, with a low around 55. Winds will come from the south-southwest at 5–10 mph.
- Friday: Showers and thunderstorms are likely after noon. Skies will be mostly sunny, with a high near 83. Winds will come from the west-southwest at 5–10 mph. The chance of precipitation is 60%.
- Friday night: There is a 20% chance of showers and thunderstorms before midnight. Skies will be mostly cloudy, with a low around 57.
- Saturday: There is a 20% chance of showers and thunderstorms after noon. It will be mostly sunny, with a high near 85.
- Saturday night: A slight chance of showers and thunderstorms is possible before midnight. The night will be partly cloudy, with a low around 55.
- Sunday: Showers and thunderstorms are possible after noon. It will be mostly sunny, with a high near 84.
- Sunday night: There is a slight chance of showers before midnight. Skies will be mostly clear, with a low around 52.
- Monday: The day will be sunny, with a high near 82.
- Monday night: Skies will be mostly clear, with a low around 52.
- Tuesday: It will be sunny, with a high near 84.
