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 95823
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 95823 in zone 9b (the coldest night of a typical year: 25 to 30°F).
The nearest station, Sacramento, CA, is 4 miles from the ZIP's center: its last spring frost comes after February 2 in half of years and after March 5 in one year in ten. By the USDA's method its plant hardiness zone is 9b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Sacramento, CASacramento Airport Asos | 4 mi | 15 ft | February 2 | March 5 | December 2 | 9b |
| Sacramento (5 mi ESE), CA | 6 mi | 38 ft | January 12 | February 8 | December 16 | 10a |
| Sacramento Metro Airport, CA | 17 mi | 23 ft | February 22 | April 1 | November 24 | 9b |
| Davis, CADavis 2 WSW Experiment Farm | 19 mi | 60 ft | February 10 | March 11 | December 1 | 9b |
| Woodland, CA1 mi WNW | 24 mi | 67 ft | February 7 | March 11 | December 5 | 9b |
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 Sacramento
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 10 | March 29 | March 14 | February 13 | November 18 | November 4 |
| 32°F | March 5 | February 17 | February 2 | January 2 | December 2 | November 16 |
| 28°F (hard freeze) | February 1 | January 18 | January 4 | December 12 | December 16 | November 30 |
| 24°F | January 22 | January 5 | December 28 | December 11 | December 21 | December 7 |
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.