Frost dates by ZIP code: The nearest NOAA stations to your ZIP, 1991-2020 normals
Enter a five-digit ZIP code. PlainClimate finds its center (Census Bureau 2024) and the five nearest NOAA stations with frost dates, and shows each station's last spring and first autumn 32°F dates with its distance and elevation.
Frost dates near ZIP 62701
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 62701 in zone 6a (the coldest night of a typical year: -10 to -5°F).
The nearest station, Springfield #2, IL, is 2 miles from the ZIP's center: its last spring frost comes after April 15 in half of years and after April 30 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Springfield #2, IL | 2 mi | 599 ft | April 15 | April 30 | October 22 | – |
| Springfield, ILSpringfield Abraham Lincoln Capital Airport | 4 mi | 594 ft | April 14 | April 29 | October 20 | 6a |
| Athens, IL4 mi SW | 12 mi | 594 ft | April 19 | May 4 | October 19 | – |
| Petersburg, IL1 mi E | 18 mi | 600 ft | April 13 | April 28 | October 21 | – |
| Virden, IL | 21 mi | 675 ft | April 7 | April 21 | October 29 | 6a |
Frost comes later in spring at higher and colder stations and earlier in low, open ground: prefer a station at a similar elevation to yours. Hardiness zone in the table: the USDA's rule (the average of each year's coldest night, 1991-2020) applied to the station's own record.
Every frost threshold at Springfield #2
NOAA publishes the dates for several temperatures and odds. A 30% spring date means a 3-in-10 chance of a later frost (the convention almanacs use); 50% is the median; 10% the cautious date.
| Threshold | Spring, 10% | Spring, 30% | Spring, 50% | Spring, 90% | Autumn, 50% | Autumn, 10% |
|---|---|---|---|---|---|---|
| 36°F (light frost) | May 13 | May 3 | April 27 | April 13 | October 13 | September 29 |
| 32°F | April 30 | April 20 | April 15 | April 3 | October 22 | October 9 |
| 28°F (hard freeze) | April 19 | April 10 | April 5 | March 21 | November 1 | October 20 |
| 24°F | April 9 | April 1 | March 26 | March 10 | November 12 | October 31 |
Source: NOAA NCEI 1991-2020 annual normals; ZIP centers: Census Bureau 2024 Gazetteer; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. Autumn 10%: one year in ten has its first frost before this date.