Frost dates in Boone County, Iowa
The average last spring frost in Boone County falls Apr 23 to Apr 28 and the average first fall frost Oct 10 to Oct 14, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 5b. Places: Beaver, Boone, Boxholm, Luther, Madrid, Ogden. 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 |
|---|---|---|---|---|
| 50031 | Beaver | Apr 28 | Oct 12 | 5a |
| 50036 | Boone | Apr 28 | Oct 12 | 5a |
| 50040 | Boxholm | Apr 28 | Oct 12 | 5a |
| 50152 | Luther | Apr 23 | Oct 14 | 5a |
| 50156 | Madrid | Apr 23 | Oct 14 | 5b |
| 50212 | Ogden | Apr 28 | Oct 12 | 5a |
| 50223 | Pilot Mound | Apr 28 | Oct 12 | 5a |
| 50276 | Woodward | Apr 25 | Oct 10 | 5a |
Nearby counties
Greene County Story County Dallas County Hamilton County Webster County Polk County
All Iowa counties · Download Iowa frost dates (CSV)
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