Frost dates for Saverton L&d 22, MO
At Saverton L&d 22, the median last spring frost (32°F) is Apr 4 and the median first fall frost is Nov 4, for a typical growing season of 212 days. For a 90% chance that the last frost has passed, wait until Apr 19. Nearby ZIP codes are in USDA hardiness zones 6a to 6b.
- Apr 4Last spring frost (median)50% chance of 32°F after this date
- Apr 19Safer planting date10% chance of 32°F after this date
- Nov 4First fall frost (median)50% chance of 32°F by this date
- 212 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 14 | Apr 30 |
| 32°F | Mar 20 | Apr 4 | Apr 19 |
| 28°F | Mar 8 | Mar 26 | Apr 8 |
| 24°F | Feb 28 | Mar 15 | Apr 2 |
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 24 | Nov 5 |
| 32°F | Oct 23 | Nov 4 | Nov 18 |
| 28°F | Nov 1 | Nov 14 | Nov 30 |
| 24°F | Nov 7 | Nov 22 | Dec 9 |
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 | 173 days | 191 days | 210 days |
| 32°F | 194 days | 212 days | 234 days |
| 28°F | 211 days | 233 days | 257 days |
| 24°F | 229 days | 252 days | 276 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 |
|---|---|---|---|
| 63467 | 6b | -5 to 0°F | 2 km |
| 62343 | 6b | -5 to 0°F | 7 km |
| 63459 | 6a | -10 to -5°F | 13 km |
| 62345 | 6a | -10 to -5°F | 14 km |
| 62356 | 6b | -5 to 0°F | 16 km |
| 63433 | 6b | -5 to 0°F | 18 km |
| 63441 | 6a | -10 to -5°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 USC00237578, at 39.6361, -91.2500, elevation 144 m (472 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 105.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hannibal Wtr Wks (14 km)
- Bowling Green 1 E (33 km)
- Monroe City (41 km)
- Clarksville L&d 24 (42 km)
- Vandalia (42 km)
- Canton L&d 20 (61 km)
- Steffenville (66 km)
- Elsberry 1 S (67 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.