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 65803
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 65803 in zone 6b (the coldest night of a typical year: -5 to 0°F).
The nearest station, Springfield Wbo, MO, is 6 miles from the ZIP's center: its last spring frost comes after April 4 in half of years and after April 20 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Springfield Wbo, MO | 6 mi | 1,325 ft | April 4 | April 20 | October 27 | – |
| Springfield, MOSpringfield Weather Office Airport | 7 mi | 1,278 ft | April 9 | April 27 | October 27 | 6b |
| Ash Grove, MO4 mi S | 17 mi | 1,129 ft | April 11 | April 29 | October 24 | – |
| Marshfield, MO4 mi WSW | 17 mi | 1,414 ft | April 13 | April 29 | October 24 | 6b |
| Ozark, MO | 18 mi | 1,134 ft | April 15 | April 30 | October 23 | – |
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 Wbo
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 2 | April 23 | April 17 | April 2 | October 19 | October 5 |
| 32°F | April 20 | April 10 | April 4 | March 21 | October 27 | October 15 |
| 28°F (hard freeze) | April 10 | April 2 | March 27 | March 8 | November 7 | October 23 |
| 24°F | April 2 | March 22 | March 15 | February 25 | November 18 | 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.