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 06010
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 06010 in zone 6b (the coldest night of a typical year: -5 to 0°F).
The nearest station, Burlington, CT, is 8 miles from the ZIP's center: its last spring frost comes after April 25 in half of years and after May 10 in one year in ten. By the USDA's method its plant hardiness zone is 6b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Burlington, CT | 8 mi | 505 ft | April 25 | May 10 | October 18 | 6b |
| Bakersville, CT | 12 mi | 686 ft | May 8 | May 22 | October 5 | 6a |
| Meriden, CTMeriden Markham Municipal Airport | 13 mi | 103 ft | April 26 | May 9 | October 16 | 6b |
| Hartford Brainard Field, CT | 15 mi | 19 ft | April 17 | May 1 | October 26 | 7a |
| Barkhamsted, CT | 17 mi | 710 ft | April 30 | May 15 | October 17 | – |
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 Burlington
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 22 | May 13 | May 6 | April 24 | October 6 | September 26 |
| 32°F | May 10 | May 1 | April 25 | April 12 | October 18 | October 4 |
| 28°F (hard freeze) | April 29 | April 18 | April 13 | April 2 | October 30 | October 14 |
| 24°F | April 14 | April 5 | April 2 | March 19 | November 11 | October 26 |
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.