Frost dates for Columbia U Of M, MO
At Columbia U Of M, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Oct 31, for a typical growing season of 207 days. For a 90% chance that the last frost has passed, wait until Apr 21. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 5Last spring frost (median)50% chance of 32°F after this date
- Apr 21Safer planting date10% chance of 32°F after this date
- Oct 31First fall frost (median)50% chance of 32°F by this date
- 207 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 2 | Apr 18 | May 4 |
| 32°F | Mar 19 | Apr 5 | Apr 21 |
| 28°F | Mar 8 | Mar 26 | Apr 11 |
| 24°F | Feb 27 | Mar 15 | Mar 31 |
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 6 | Oct 20 | Nov 1 |
| 32°F | Oct 17 | Oct 31 | Nov 14 |
| 28°F | Oct 27 | Nov 9 | Nov 27 |
| 24°F | Nov 5 | Nov 19 | 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 | 165 days | 184 days | 205 days |
| 32°F | 187 days | 207 days | 227 days |
| 28°F | 206 days | 229 days | 251 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 |
|---|---|---|---|
| 65216 | 6b | -5 to 0°F | 2 km |
| 65203 | 6b | -5 to 0°F | 8 km |
| 65201 | 6b | -5 to 0°F | 8 km |
| 65202 | 6b | -5 to 0°F | 9 km |
| 65287 | 6b | -5 to 0°F | 19 km |
| 65255 | 6b | -5 to 0°F | 20 km |
| 65256 | 6b | -5 to 0°F | 23 km |
| 65284 | 6b | -5 to 0°F | 27 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 USC00231801, at 38.9425, -92.3206, elevation 235 m (770 ft).
- Data quality: Representative (10+ years), 24 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
- Columbia Regional Airport (17 km)
- Fulton (34 km)
- Boonville (36 km)
- Boonville (38 km)
- New Franklin 1w (39 km)
- California (41 km)
- Jefferson City Water Plant (41 km)
- Jefferson City Mem Airport (42 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.