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 64155
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 64155 in zone 6b (the coldest night of a typical year: -5 to 0°F).
The nearest station, Smithville, MO, is 8 miles from the ZIP's center: its last spring frost comes after April 18 in half of years and after May 3 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Smithville, MOSmithville Lake | 8 mi | 904 ft | April 18 | May 3 | October 20 | – |
| Kansas City, MOKansas City International Airport | 9 mi | 1,005 ft | April 13 | April 29 | October 24 | 6a |
| Kansas City Downtown Airport, MO | 11 mi | 742 ft | April 4 | April 20 | November 2 | 6b |
| Kearney, MO3 mi E | 14 mi | 840 ft | April 19 | May 5 | October 17 | – |
| Independence, MO | 18 mi | 985 ft | April 10 | April 26 | October 27 | 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 Smithville
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 13 | May 3 | April 28 | April 14 | October 10 | September 25 |
| 32°F | May 3 | April 25 | April 18 | April 4 | October 20 | October 5 |
| 28°F (hard freeze) | April 23 | April 13 | April 7 | March 23 | October 29 | October 15 |
| 24°F | April 14 | April 4 | March 29 | March 9 | November 5 | October 22 |
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.