Frost dates in Oregon County, Missouri
The average last spring frost in Oregon County falls Apr 12 to Apr 17 and the average first fall frost Oct 21 to Oct 24, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 7a. Places: Alton, Koshkonong, Thayer. 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 |
|---|---|---|---|---|
| 65606 | Alton | Apr 17 | Oct 21 | 7a |
| 65690 | Apr 17 | Oct 21 | 7a | |
| 65692 | Koshkonong | Apr 12 | Oct 24 | 7a |
| 65778 | Apr 17 | Oct 21 | 7a | |
| 65791 | Thayer | Apr 12 | Oct 24 | 7a |
Nearby counties
Howell County Carter County Ripley County Shannon County Ozark County Butler County
All Missouri counties · Download Missouri frost dates (CSV)
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.