Frost dates for Kansas City Downtown Airport, MO
At Kansas City Downtown Airport, the median last spring frost (32°F) is Apr 4 and the median first fall frost is Nov 2, for a typical growing season of 211 days. For a 90% chance that the last frost has passed, wait until Apr 20. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 4Last spring frost (median)50% chance of 32°F after this date
- Apr 20Safer planting date10% chance of 32°F after this date
- Nov 2First fall frost (median)50% chance of 32°F by this date
- 211 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Apr 1 | Apr 15 | May 2 |
| 32°F | Mar 17 | Apr 4 | Apr 20 |
| 28°F | Mar 6 | Mar 26 | Apr 10 |
| 24°F | Feb 25 | Mar 14 | Apr 1 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 12 | Oct 25 | Nov 6 |
| 32°F | Oct 21 | Nov 2 | Nov 16 |
| 28°F | Oct 28 | Nov 11 | Nov 29 |
| 24°F | Nov 3 | Nov 20 | Dec 7 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 170 days | 192 days | 211 days |
| 32°F | 191 days | 211 days | 234 days |
| 28°F | 208 days | 231 days | 254 days |
| 24°F | 227 days | 251 days | 272 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 64105 | 6b | -5 to 0°F | 2 km |
| 64101 | 7a | 0 to 5°F | 2 km |
| 66101 | 6b | -5 to 0°F | 3 km |
| 66118 | 7a | 0 to 5°F | 3 km |
| 64106 | 6b | -5 to 0°F | 3 km |
| 64102 | 7a | 0 to 5°F | 3 km |
| 66115 | 6b | -5 to 0°F | 3 km |
| 64116 | 6b | -5 to 0°F | 4 km |
| 64108 | 7a | 0 to 5°F | 4 km |
| 66105 | 7a | 0 to 5°F | 5 km |
| 64124 | 6b | -5 to 0°F | 5 km |
| 64127 | 6b | -5 to 0°F | 6 km |
| 64150 | 6b | -5 to 0°F | 6 km |
| 64123 | 6b | -5 to 0°F | 7 km |
| 64109 | 6b | -5 to 0°F | 7 km |
| 64111 | 6b | -5 to 0°F | 7 km |
| 66103 | 6b | -5 to 0°F | 7 km |
| 64120 | 6b | -5 to 0°F | 7 km |
| 64117 | 6b | -5 to 0°F | 8 km |
| 64128 | 6b | -5 to 0°F | 8 km |
| 66102 | 6b | -5 to 0°F | 8 km |
| 66104 | 6b | -5 to 0°F | 9 km |
| 64125 | 6b | -5 to 0°F | 9 km |
| 64126 | 6b | -5 to 0°F | 9 km |
| 64112 | 6b | -5 to 0°F | 9 km |
| 64110 | 6b | -5 to 0°F | 10 km |
| 66205 | 6b | -5 to 0°F | 10 km |
| 64118 | 6b | -5 to 0°F | 10 km |
| 64130 | 7a | 0 to 5°F | 11 km |
| 66106 | 6b | -5 to 0°F | 11 km |
| 64151 | 6b | -5 to 0°F | 11 km |
| 64113 | 6b | -5 to 0°F | 12 km |
| 64119 | 6b | -5 to 0°F | 12 km |
| 66202 | 6b | -5 to 0°F | 13 km |
| 66208 | 6b | -5 to 0°F | 14 km |
| 66203 | 6b | -5 to 0°F | 15 km |
| 64158 | 6b | -5 to 0°F | 16 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USW00013988, at 39.1208, -94.5969, elevation 226 m (742 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 93.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Independence (19 km)
- Kansas City Intl Airport (23 km)
- Lees Summit Muni Airport (26 km)
- Smithville Lake (30 km)
- Lees Summit Reed Wr (35 km)
- Kearney 3e (36 km)
- Pleasant Hill WFO (45 km)
- Richmond 3s (56 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.