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Cheyenne anticipates thunderstorms, heavy rain through Friday

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CHEYENNE, Wyo. — Cheyenne and the surrounding areas should prepare for a dynamic weather pattern through Friday, as forecast by the National Weather Service in Cheyenne. Wednesday heralds above-average temperatures but also brings isolated to scattered showers and thunderstorms by the afternoon and evening.

Late tonight and into early Thursday, drivers should be cautious of patchy dense fog along the I-80 corridor, spanning from Cheyenne to Sidney. This fog could significantly reduce visibility, impacting morning commutes.

The weather situation intensifies on Thursday with scattered to numerous showers and potentially severe thunderstorms, particularly east of the I-25 corridor. Large hail and damaging wind are the primary hazards, and there’s a slight chance of an isolated tornado as well.

Friday will see localized moderate to heavy rainfall, offering some relief but requiring preparations for persistent showers.

Temperatures are expected to soar into the upper 60s to upper 70s today, a notable rise from yesterday. These conditions will contribute to a quick surge in convective activity, leading to afternoon showers and thunderstorms.

By Thursday, a significant weather shift will occur as an upper-level trough moves over the region, drawing moisture northward and setting the stage for severe weather conditions. This includes the potential for supercell development, with a forecast of damaging straight-line winds of up to 70 mph and hail up to 2 inches in diameter.

As the weekend approaches, a brief respite from the rain is expected before another disturbance arrives.

Detailed Forecast for Cheyenne

  • Today: There’s a chance of rain before noon, followed by a chance of showers and thunderstorms. Expect mostly sunny skies with a high near 70. Winds will come from the south-southwest at 10–15 mph. The chance of precipitation is 30%.
  • Tonight: There’s a chance of rain and thunderstorms before 9 p.m., then a chance of rain between 9 p.m. and midnight. Patchy fog is expected before 3 a.m. and again after 4 a.m. Otherwise, the skies will be partly cloudy, with a low around 41. Winds will shift from south at 5–15 mph to the west-southwest after midnight. The chance of precipitation is 20%.
  • Thursday: A slight chance of showers before noon is expected, followed by a chance of showers and thunderstorms between noon and 3 p.m., then likely showers and possibly a thunderstorm after 3. Patchy fog is possible before 7 a.m. Otherwise, clouds will increase, with a high near 69. Winds will shift from the west at 5–15 mph to the south-southeast in the afternoon. The chance of precipitation is 60%.
  • Thursday Night: There will be likely showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3 a.m., followed by a chance of showers after 3 a.m. It will be mostly cloudy, with a low around 43. Conditions will be breezy, with a northwest wind at 10–20 mph. The chance of precipitation is 60%.
  • Friday: Showers are likely before noon, then there’s a chance of showers and thunderstorms between noon and 3 p.m., followed by a chance of showers after 3. It will be mostly cloudy, with a high near 58. Breezy conditions will prevail, with a northwest wind at 20–25 mph, gusting as high as 35 mph. The chance of precipitation is 60%.
  • Friday Night: There will be likely showers and possibly a thunderstorm. It will be mostly cloudy, with a low around 35. Conditions will be breezy. The chance of precipitation is 60%.
  • Saturday: Showers and possibly thunderstorms are expected, with a high near 47. The chance of precipitation is 100%.
  • Saturday Night: Showers will continue. It will be mostly cloudy, with a low around 31.
  • Sunday: Showers are likely, with thunderstorms also possible after noon. Expect mostly cloudy skies and a high near 53. Conditions will be breezy.
  • Sunday Night: There’s a slight chance of showers before midnight. It will be partly cloudy with a low around 35. Conditions will be breezy.
  • Monday: The day will be mostly sunny with a high near 62. It will be breezy.
  • Monday Night: Expect mostly clear skies with a low around 38. It will be breezy.
  • Tuesday: Mostly sunny skies are forecast, with a high near 69.

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