Frost dates in Overland Park, Kansas
NOAA 1991–2020 normals for a 32 °F freeze. Low spots and the edge of town run colder than downtown.
Short answer
The average last spring frost in Overland Park is April 8, and the average first fall frost is October 29, from NOAA's Olathe Johnson Co Exec Airport station, 4 miles from the middle of Overland Park. 1 year in 10 the last frost comes after April 23, and the first one by October 15. That leaves about 204 frost-free days. Overland Park is in USDA planting zone 6b.
Weather stations around Overland Park
The first row is the date most people in Overland Park go by. The others show how far the dates move across the area.
| Station | Last spring frost | First fall frost | Frost-free |
|---|---|---|---|
| Olathe Johnson Co Exec Airport 4 mi away, 1,070 ft | April 8 1 in 10 after April 23 | October 29 1 in 10 by October 15 | 204 days |
| Olathe 3E 4 mi away, 1,055 ft | April 10 1 in 10 after April 24 | October 29 1 in 10 by October 13 | 202 days |
| Olathe Johnson Co Airport 11 mi away, 1,087 ft | April 13 1 in 10 after April 29 | October 24 1 in 10 by October 10 | 194 days |
| Bonner Springs 16 mi away, 850 ft | April 16 1 in 10 after May 1 | October 22 1 in 10 by October 9 | 189 days |
| Kansas City Downtown Airport 17 mi away, 742 ft | April 4 1 in 10 after April 20 | November 2 1 in 10 by October 21 | 212 days |
Distances are from the middle of Overland Park as the Census Bureau maps it. The average date is NOAA's 50% date: half of years have a later last frost, or an earlier first one. Plan by the 1-in-10 date if a freeze would cost you plants. The planting zone is the USDA 2023 zone for ZIP code 66213, at the middle of the city.
Your exact ZIP code
Overland Park covers a lot of ground. For the station nearest your own street, and its planting zone, type your ZIP code.
How these dates work
Frost dates come from NOAA's 1991 to 2020 Climate Normals, which work out from each weather station's daily lows how likely the last spring freeze and the first fall freeze (32 °F) are by each date. We use the station nearest the middle of your ZIP code and show its height and distance, since a station on a hill or by a lake can differ from your yard.
The average date is the 50% date: half of years have a freeze after the spring date or before the fall one. The 1-in-10 dates are NOAA's 10% dates, the ones to plan by if a late freeze would cost you plants. Within one yard, cold air pools in low spots while walls and paving hold heat, so some corners freeze before others.
More frost dates
All of Kansas, station by station.
Other Kansas cities: Wichita · Kansas City · Olathe
Nearby: Kansas City, MO · Springfield, MO
Where the numbers come from
- USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture
- PRISM Climate Group, Oregon State University (zone data)
- NOAA NCEI, U.S. Climate Normals 1991–2020, annual/seasonal
- NOAA, Normals calculation methodology (frost-freeze probability dates)
- US Census Bureau, 2025 ZCTA gazetteer (ZIP code centers)
- US Census Bureau, 2025 city population estimates and place gazetteer