Frost dates for Vienna 2 WNW, MO
At Vienna 2 WNW, the median last spring frost (32°F) is Apr 8 and the median first fall frost is Oct 26, for a typical growing season of 200 days. For a 90% chance that the last frost has passed, wait until Apr 27. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 8Last spring frost (median)50% chance of 32°F after this date
- Apr 27Safer planting date10% chance of 32°F after this date
- Oct 26First fall frost (median)50% chance of 32°F by this date
- 200 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 21 | May 7 |
| 32°F | Mar 21 | Apr 8 | Apr 27 |
| 28°F | Mar 10 | Mar 28 | Apr 13 |
| 24°F | Feb 27 | Mar 16 | Apr 3 |
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 16 | Oct 28 |
| 32°F | Oct 12 | Oct 26 | Nov 8 |
| 28°F | Oct 23 | Nov 5 | Nov 24 |
| 24°F | Nov 1 | Nov 17 | 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 | 153 days | 176 days | 198 days |
| 32°F | 176 days | 200 days | 220 days |
| 28°F | 201 days | 223 days | 247 days |
| 24°F | 221 days | 245 days | 270 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 |
|---|---|---|---|
| 65582 | 6b | -5 to 0°F | 5 km |
| 65001 | 6b | -5 to 0°F | 9 km |
| 65443 | 6b | -5 to 0°F | 13 km |
| 65058 | 6b | -5 to 0°F | 15 km |
| 65035 | 6b | -5 to 0°F | 18 km |
| 65048 | 6b | -5 to 0°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 USC00238620, at 38.2017, -91.9811, elevation 235 m (770 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 115.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Vichy Rolla National Airport (20 km)
- Iberia (31 km)
- Rolla Missouri S&t (33 km)
- Freedom (37 km)
- Jefferson City Mem Airport (46 km)
- Jefferson City Water Plant (46 km)
- Waynesville 2 W (48 km)
- Fort Leonard Wood (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.