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 65101
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 65101 in zone 6b (the coldest night of a typical year: -5 to 0°F).
The nearest station, Jefferson City, MO, is 7 miles from the ZIP's center: its last spring frost comes after April 10 in half of years and after April 25 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 |
|---|---|---|---|---|---|---|
| Jefferson City, MOJefferson City Memorial Airport | 7 mi | 573 ft | April 10 | April 25 | October 26 | 6b |
| Jefferson City Water Treatment Plant, MO | 7 mi | 650 ft | April 8 | April 23 | October 31 | 6b |
| Vienna, MO2 mi WNW | 22 mi | 770 ft | April 8 | April 27 | October 26 | – |
| Columbia, MOColumbia Regional Airport | 23 mi | 893 ft | April 7 | April 21 | October 29 | 6b |
| Freedom, MO | 23 mi | 805 ft | April 11 | April 30 | October 21 | 6b |
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 Jefferson City
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 8 | April 29 | April 22 | April 7 | October 16 | October 1 |
| 32°F | April 25 | April 16 | April 10 | March 26 | October 26 | October 13 |
| 28°F (hard freeze) | April 15 | April 5 | March 31 | March 13 | November 4 | October 23 |
| 24°F | April 4 | March 27 | March 20 | March 2 | November 14 | November 1 |
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.