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 95661
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 95661 in zone 9b (the coldest night of a typical year: 25 to 30°F).
The nearest station, Auburn, CA, is 15 miles from the ZIP's center: its last spring frost comes after February 25 in half of years and after April 7 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Auburn, CA | 15 mi | 1,292 ft | February 25 | April 7 | December 5 | – |
| Sacramento (5 mi ESE), CA | 16 mi | 38 ft | January 12 | February 8 | December 16 | 10a |
| Sacramento Metro Airport, CA | 19 mi | 23 ft | February 22 | April 1 | November 24 | 9b |
| Sacramento, CASacramento Airport Asos | 21 mi | 15 ft | February 2 | March 5 | December 2 | 9b |
| Placerville, CA | 23 mi | 1,850 ft | March 31 | April 23 | November 21 | – |
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 Auburn
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) | April 30 | April 15 | April 5 | March 2 | November 19 | October 30 |
| 32°F | April 7 | March 14 | February 25 | January 15 | December 5 | November 15 |
| 28°F (hard freeze) | February 25 | January 31 | January 13 | December 19 | December 22 | December 1 |
| 24°F | January 28 | January 8 | December 31 | December 9 | December 28 | December 6 |
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.