Frost dates for Peoria Gtr Peoria Airport, IL
At Peoria Gtr Peoria Airport, the median last spring frost (32°F) is Apr 16 and the median first fall frost is Oct 23, for a typical growing season of 189 days. For a 90% chance that the last frost has passed, wait until May 4. Nearby ZIP codes are in USDA hardiness zones 5b to 6a.
- Apr 16Last spring frost (median)50% chance of 32°F after this date
- May 4Safer planting date10% chance of 32°F after this date
- Oct 23First fall frost (median)50% chance of 32°F by this date
- 189 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 14 | Apr 27 | May 14 |
| 32°F | Apr 2 | Apr 16 | May 4 |
| 28°F | Mar 19 | Apr 5 | Apr 21 |
| 24°F | Mar 8 | Mar 26 | Apr 10 |
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 28 | Oct 14 | Oct 25 |
| 32°F | Oct 9 | Oct 23 | Nov 3 |
| 28°F | Oct 21 | Nov 2 | Nov 16 |
| 24°F | Nov 1 | Nov 13 | Nov 28 |
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 | 147 days | 168 days | 187 days |
| 32°F | 167 days | 189 days | 209 days |
| 28°F | 192 days | 212 days | 232 days |
| 24°F | 214 days | 233 days | 255 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 |
|---|---|---|---|
| 61605 | 6a | -10 to -5°F | 4 km |
| 61607 | 6a | -10 to -5°F | 4 km |
| 61604 | 6a | -10 to -5°F | 5 km |
| 61602 | 6a | -10 to -5°F | 7 km |
| 61606 | 6a | -10 to -5°F | 7 km |
| 61610 | 6a | -10 to -5°F | 8 km |
| 61615 | 6a | -10 to -5°F | 9 km |
| 61536 | 6a | -10 to -5°F | 9 km |
| 61603 | 6a | -10 to -5°F | 10 km |
| 61547 | 6a | -10 to -5°F | 11 km |
| 61614 | 6a | -10 to -5°F | 12 km |
| 61528 | 5b | -15 to -10°F | 13 km |
| 61616 | 6a | -10 to -5°F | 13 km |
| 61611 | 6a | -10 to -5°F | 13 km |
| 61539 | 6a | -10 to -5°F | 14 km |
| 61554 | 6a | -10 to -5°F | 15 km |
| 61533 | 6a | -10 to -5°F | 16 km |
| 61535 | 6a | -10 to -5°F | 17 km |
| 61569 | 5b | -15 to -10°F | 18 km |
| 61564 | 6a | -10 to -5°F | 19 km |
| 61552 | 6a | -10 to -5°F | 20 km |
| 61546 | 6a | -10 to -5°F | 27 km |
| 61553 | 5b | -15 to -10°F | 29 km |
| 61531 | 5b | -15 to -10°F | 30 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 USW00014842, at 40.6675, -89.6839, elevation 198 m (650 ft).
- Data quality: Standard (24+ years of data), 30 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
- Princeville (30 km)
- Congerville 2nw (38 km)
- Lacon (45 km)
- Havana (52 km)
- Bloomington 5w (54 km)
- Mason City 4se (56 km)
- Knoxville (57 km)
- Minonk (61 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.