Frost dates for Fort Leonard Wood, MO
At Fort Leonard Wood, the median last spring frost (32°F) is Apr 14 and the median first fall frost is Oct 24, for a typical growing season of 193 days. For a 90% chance that the last frost has passed, wait until Apr 30. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 14Last spring frost (median)50% chance of 32°F after this date
- Apr 30Safer planting date10% chance of 32°F after this date
- Oct 24First fall frost (median)50% chance of 32°F by this date
- 193 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 10 | Apr 27 | May 10 |
| 32°F | Mar 29 | Apr 14 | Apr 30 |
| 28°F | Mar 16 | Apr 2 | Apr 18 |
| 24°F | Mar 1 | Mar 22 | Apr 6 |
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 1 | Oct 15 | Oct 27 |
| 32°F | Oct 11 | Oct 24 | Nov 6 |
| 28°F | Oct 21 | Nov 1 | Nov 17 |
| 24°F | Oct 30 | Nov 11 | Nov 29 |
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 | 150 days | 170 days | 191 days |
| 32°F | 171 days | 193 days | 213 days |
| 28°F | 194 days | 215 days | 237 days |
| 24°F | 213 days | 235 days | 260 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 |
|---|---|---|---|
| 65473 | 6b | -5 to 0°F | 6 km |
| 65457 | 6b | -5 to 0°F | 10 km |
| 65461 | 6b | -5 to 0°F | 10 km |
| 65550 | 6b | -5 to 0°F | 18 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 USC00232981, at 37.7481, -92.1053, elevation 342 m (1,123 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 111.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Waynesville 2 W (13 km)
- Licking 4n (29 km)
- Salem 10 W (36 km)
- Rolla Missouri S&t (37 km)
- Iberia (43 km)
- Houston (49 km)
- Vienna 2 WNW (52 km)
- Salem (52 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.