Frost dates · Wyoming
Wyoming counties by frost timing.
Latest at top, earliest at bottom. In most states this matches the north-to-south gradient.
Sorted by spring frost
Latest → earliest.
Sublette County
Spring Jun 5·Fall Sep 491-day season
Uinta County
Spring May 30·Fall Sep 20113-day season
Lincoln County
Spring May 24·Fall Sep 15114-day season
Carbon County
Spring May 17·Fall Sep 26132-day season
Park County
Spring May 11·Fall Oct 5147-day season
Natrona County
Spring May 10·Fall Oct 1144-day season
Goshen County
Spring May 9·Fall Oct 1145-day season
Laramie County
Spring May 9·Fall Oct 1145-day season
Platte County
Spring May 9·Fall Oct 1145-day season
Weston County
Spring May 9·Fall Oct 2146-day season
Converse County
Spring May 8·Fall Oct 1146-day season
Johnson County
Spring May 8·Fall Sep 30145-day season
Albany County
Spring May 7·Fall Oct 4150-day season
Sheridan County
Spring May 7·Fall Oct 3149-day season
Sweetwater County
Spring May 7·Fall Oct 5151-day season
Crook County
Spring May 6·Fall Oct 3150-day season
Niobrara County
Spring May 5·Fall Oct 5153-day season
Fremont County
Spring May 3·Fall Oct 7157-day season
Big Horn County
Spring May 2·Fall Oct 3154-day season
Campbell County
Spring May 2·Fall Oct 10161-day season
Washakie County
Spring May 1·Fall Oct 5157-day season
Hot Springs County
Spring Apr 23·Fall Oct 15175-day season
Alphabetical · A to Z
- Albany County
- Big Horn County
- Campbell County
- Carbon County
- Converse County
- Crook County
- Fremont County
- Goshen County
- Hot Springs County
- Johnson County
- Laramie County
- Lincoln County
- Natrona County
- Niobrara County
- Park County
- Platte County
- Sheridan County
- Sublette County
- Sweetwater County
- Teton County
- Uinta County
- Washakie County
- Weston County