Frost dates for Richmond 3s, MO
At Richmond 3s, the median last spring frost (32°F) is Apr 19 and the median first fall frost is Oct 18, for a typical growing season of 180 days. For a 90% chance that the last frost has passed, wait until May 3. Nearby ZIP codes are in USDA hardiness zone 6a.
- Apr 19Last spring frost (median)50% chance of 32°F after this date
- May 3Safer planting date10% chance of 32°F after this date
- Oct 18First fall frost (median)50% chance of 32°F by this date
- 180 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 16 | Apr 30 | May 12 |
| 32°F | Apr 6 | Apr 19 | May 3 |
| 28°F | Mar 26 | Apr 8 | Apr 22 |
| 24°F | Mar 10 | Mar 30 | Apr 11 |
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 24 | Oct 8 | Oct 20 |
| 32°F | Oct 3 | Oct 18 | Oct 30 |
| 28°F | Oct 14 | Oct 27 | Nov 9 |
| 24°F | Oct 23 | Nov 4 | Nov 19 |
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 | 141 days | 161 days | 179 days |
| 32°F | 160 days | 180 days | 197 days |
| 28°F | 182 days | 201 days | 220 days |
| 24°F | 199 days | 221 days | 243 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 |
|---|---|---|---|
| 64036 | 6a | -10 to -5°F | 6 km |
| 64017 | 6a | -10 to -5°F | 7 km |
| 64085 | 6a | -10 to -5°F | 11 km |
| 64077 | 6a | -10 to -5°F | 15 km |
| 64084 | 6a | -10 to -5°F | 18 km |
| 64066 | 6a | -10 to -5°F | 18 km |
| 64074 | 6a | -10 to -5°F | 20 km |
| 64088 | 6a | -10 to -5°F | 20 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 USC00237116, at 39.2422, -93.9700, elevation 213 m (700 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 131.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lexington 3e (12 km)
- Higginsville (29 km)
- Kearney 3e (34 km)
- Waverly (38 km)
- Independence (41 km)
- Elm (42 km)
- Carrollton (43 km)
- Lees Summit Muni Airport (47 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.