Frost dates for Virden, IL
At Virden, the median last spring frost (32°F) is Apr 7 and the median first fall frost is Oct 29, for a typical growing season of 205 days. For a 90% chance that the last frost has passed, wait until Apr 21. Nearby ZIP codes are in USDA hardiness zones 6a to 6b.
- Apr 7Last spring frost (median)50% chance of 32°F after this date
- Apr 21Safer planting date10% chance of 32°F after this date
- Oct 29First fall frost (median)50% chance of 32°F by this date
- 205 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 4 | Apr 19 | May 5 |
| 32°F | Mar 22 | Apr 7 | Apr 21 |
| 28°F | Mar 11 | Mar 28 | Apr 12 |
| 24°F | Mar 1 | Mar 19 | Apr 1 |
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 4 | Oct 19 | Oct 31 |
| 32°F | Oct 16 | Oct 29 | Nov 11 |
| 28°F | Oct 27 | Nov 7 | Nov 22 |
| 24°F | Nov 3 | 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 | 160 days | 182 days | 201 days |
| 32°F | 185 days | 205 days | 225 days |
| 28°F | 205 days | 225 days | 247 days |
| 24°F | 223 days | 246 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 |
|---|---|---|---|
| 62690 | 6b | -5 to 0°F | 0 km |
| 62689 | 6a | -10 to -5°F | 3 km |
| 62615 | 6a | -10 to -5°F | 9 km |
| 62640 | 6b | -5 to 0°F | 9 km |
| 62530 | 6a | -10 to -5°F | 11 km |
| 62672 | 6b | -5 to 0°F | 12 km |
| 62533 | 6a | -10 to -5°F | 14 km |
| 62536 | 6a | -10 to -5°F | 17 km |
| 62692 | 6a | -10 to -5°F | 17 km |
| 62661 | 6a | -10 to -5°F | 19 km |
| 62667 | 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 USC00118860, at 39.5061, -89.7689, elevation 206 m (675 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 101.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Carlinville (26 km)
- Morrisonville (28 km)
- Springfield #2 (33 km)
- Springfield Capital Airport (38 km)
- Jacksonville 2e (45 km)
- Hillsboro (45 km)
- Jacksonville 2 (46 km)
- Athens 4sw (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.