Frost dates for Clinton, MO
At Clinton, the median last spring frost (32°F) is Apr 17 and the median first fall frost is Oct 21, for a typical growing season of 187 days. For a 90% chance that the last frost has passed, wait until May 2. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 17Last spring frost (median)50% chance of 32°F after this date
- May 2Safer planting date10% chance of 32°F after this date
- Oct 21First fall frost (median)50% chance of 32°F by this date
- 187 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 12 | Apr 28 | May 12 |
| 32°F | Mar 31 | Apr 17 | May 2 |
| 28°F | Mar 19 | Apr 5 | Apr 22 |
| 24°F | Mar 7 | Mar 26 | Apr 12 |
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 | Sep 27 | Oct 10 | Oct 23 |
| 32°F | Oct 7 | Oct 21 | Nov 1 |
| 28°F | Oct 18 | Oct 31 | Nov 12 |
| 24°F | Oct 28 | Nov 9 | Nov 27 |
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 | 145 days | 166 days | 187 days |
| 32°F | 164 days | 187 days | 210 days |
| 28°F | 186 days | 208 days | 232 days |
| 24°F | 206 days | 229 days | 253 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 |
|---|---|---|---|
| 64735 | 6b | -5 to 0°F | 5 km |
| 64740 | 6b | -5 to 0°F | 20 km |
| 64726 | 6b | -5 to 0°F | 20 km |
| 64733 | 6b | -5 to 0°F | 22 km |
| 64788 | 6b | -5 to 0°F | 22 km |
| 64739 | 6b | -5 to 0°F | 31 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 USC00231711, at 38.3950, -93.7711, elevation 235 m (770 ft).
- Data quality: Standard (24+ years of data), 26 years of freeze data.
- Average days per year at or below 32°F: 117.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Windsor (26 km)
- Windsor (26 km)
- Appleton City (32 km)
- Truman Dam & Rsvr (35 km)
- Osceola (39 km)
- Warrensburg 4nw (43 km)
- Cole Camp 3nw (46 km)
- Sedalia Water Plant (57 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.