Frost dates in Weston County, Wyoming
The average last spring frost in Weston County falls May 13 to May 20 and the average first fall frost Sep 23 to Oct 3, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b. Places: Newcastle, Osage, Upton. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 82701 | Newcastle | May 13 | Oct 3 | 4b |
| 82723 | Osage | May 20 | Sep 23 | 4b |
| 82730 | Upton | May 20 | Sep 23 | 4b |
Nearby counties
Crook County Campbell County Niobrara County Converse County Johnson County Platte County
All Wyoming counties · Download Wyoming frost dates (CSV)
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