Frost dates for Houston, MO
At Houston, the median last spring frost (32°F) is Apr 10 and the median first fall frost is Oct 23, for a typical growing season of 194 days. For a 90% chance that the last frost has passed, wait until May 1. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 10Last spring frost (median)50% chance of 32°F after this date
- May 1Safer planting date10% chance of 32°F after this date
- Oct 23First fall frost (median)50% chance of 32°F by this date
- 194 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 6 | Apr 25 | May 13 |
| 32°F | Mar 25 | Apr 10 | May 1 |
| 28°F | Mar 13 | Mar 29 | Apr 15 |
| 24°F | Mar 1 | Mar 18 | Apr 5 |
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 28 | Oct 12 | Oct 24 |
| 32°F | Oct 6 | Oct 23 | Nov 5 |
| 28°F | Oct 18 | Nov 3 | Nov 23 |
| 24°F | Oct 31 | Nov 15 | Dec 5 |
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 | 146 days | 169 days | 192 days |
| 32°F | 170 days | 194 days | 217 days |
| 28°F | 193 days | 218 days | 245 days |
| 24°F | 218 days | 243 days | 269 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 |
|---|---|---|---|
| 65483 | 7a | 0 to 5°F | 2 km |
| 65564 | 7a | 0 to 5°F | 10 km |
| 65444 | 6b | -5 to 0°F | 10 km |
| 65589 | 7a | 0 to 5°F | 15 km |
| 65464 | 7a | 0 to 5°F | 16 km |
| 65468 | 7a | 0 to 5°F | 16 km |
| 65555 | 7a | 0 to 5°F | 17 km |
| 65570 | 6b | -5 to 0°F | 19 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 USC00234019, at 37.3186, -91.9628, elevation 373 m (1,224 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 108.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Licking 4n (27 km)
- Mountain Grove 2 N (32 km)
- Summersville 3 SE (36 km)
- Salem 10 W (41 km)
- Round Spring 2sw (48 km)
- West Plains Muni Airport (49 km)
- Fort Leonard Wood (49 km)
- Salem (51 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.