Frost dates for Hoopeston, IL
At Hoopeston, the median last spring frost (32°F) is Apr 22 and the median first fall frost is Oct 19, for a typical growing season of 180 days. For a 90% chance that the last frost has passed, wait until May 8. Nearby ZIP codes are in USDA hardiness zone 6a.
- Apr 22Last spring frost (median)50% chance of 32°F after this date
- May 8Safer planting date10% chance of 32°F after this date
- Oct 19First fall frost (median)50% chance of 32°F by this date
- 180 daysGrowing season (median)between 32°F freezes
USDA hardiness zone 6a (-10 to -5°F) · see all zone 6a frost dates
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 18 | May 2 | May 19 |
| 32°F | Apr 7 | Apr 22 | May 8 |
| 28°F | Mar 28 | Apr 10 | Apr 26 |
| 24°F | Mar 14 | Apr 1 | Apr 16 |
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 9 | Oct 23 |
| 32°F | Oct 5 | Oct 19 | Nov 1 |
| 28°F | Oct 16 | Oct 31 | Nov 13 |
| 24°F | Oct 29 | Nov 10 | Nov 26 |
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 | 136 days | 158 days | 177 days |
| 32°F | 157 days | 180 days | 199 days |
| 28°F | 180 days | 201 days | 222 days |
| 24°F | 204 days | 224 days | 247 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 |
|---|---|---|---|
| 60942 | 6a | -10 to -5°F | 2 km |
| 60973 | 6a | -10 to -5°F | 8 km |
| 60932 | 6a | -10 to -5°F | 10 km |
| 60963 | 6a | -10 to -5°F | 11 km |
| 60939 | 6a | -10 to -5°F | 14 km |
| 60926 | 6a | -10 to -5°F | 16 km |
| 60960 | 6a | -10 to -5°F | 18 km |
| 61848 | 6a | -10 to -5°F | 18 km |
| 60953 | 6a | -10 to -5°F | 18 km |
| 60924 | 6a | -10 to -5°F | 20 km |
| 61865 | 6a | -10 to -5°F | 21 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 USC00114198, at 40.4664, -87.6850, elevation 216 m (710 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 118.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Danville (37 km)
- Watseka 2 NW (37 km)
- Paxton 2 WSW (39 km)
- Rantoul (44 km)
- Ogden (46 km)
- Piper City (53 km)
- Sidell 4N (57 km)
- Gibson City (58 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.