Frost dates for Oolitic Purdue Ex Fm, IN
At this NOAA station the last spring frost (32°F) usually comes by April 20 and the first fall frost around October 20, giving a growing season of about 181 days.
April 20average last spring frost
October 20average first fall frost
JanAprJulOctDec
Frost odds
| 1 year in 10 the last spring frost is later than | May 7 |
| Half of years the last spring frost is later than | April 20 |
| 9 years in 10 the last spring frost is later than | April 6 |
| 1 year in 10 the first fall frost is earlier than | October 6 |
| Half of years the first fall frost is earlier than | October 20 |
| 9 years in 10 the first fall frost is earlier than | October 30 |
A hard freeze (28°F) usually ends by April 7 and returns around October 30.
A light frost (36°F, which can still nip tender plants) usually ends by May 1 and returns around October 10.
Station USC00126580, elevation 199 m. Based on 30 years of 1991 to 2020 records. A garden higher up, in a hollow or far from this station can freeze later in spring.
Check another ZIP
Sources
- U.S. Annual/Seasonal Climate Normals, 1991 to 2020 (freeze probability dates by station), NOAA National Centers for Environmental Information, checked 1 November 2026
- Annual/Seasonal Normals 1991 to 2020 documentation, NOAA National Centers for Environmental Information, checked 1 November 2026
- 2024 Gazetteer Files, ZIP Code Tabulation Areas, US Census Bureau, checked 1 November 2026