Frost dates for Chardon, OH
At Chardon, the median last spring frost (32°F) is May 5 and the median first fall frost is Oct 18, for a typical growing season of 164 days. For a 90% chance that the last frost has passed, wait until May 21. Nearby ZIP codes are in USDA hardiness zone 6a.
- May 5Last spring frost (median)50% chance of 32°F after this date
- May 21Safer planting date10% chance of 32°F after this date
- Oct 18First fall frost (median)50% chance of 32°F by this date
- 164 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 30 | May 18 | Jun 1 |
| 32°F | Apr 22 | May 5 | May 21 |
| 28°F | Apr 9 | Apr 23 | May 9 |
| 24°F | Mar 29 | Apr 11 | Apr 23 |
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 22 | Oct 5 | Oct 18 |
| 32°F | Oct 2 | Oct 18 | Nov 1 |
| 28°F | Oct 15 | Nov 1 | Nov 14 |
| 24°F | Oct 31 | Nov 12 | Nov 29 |
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 | 121 days | 141 days | 161 days |
| 32°F | 142 days | 164 days | 185 days |
| 28°F | 166 days | 190 days | 209 days |
| 24°F | 196 days | 214 days | 237 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 |
|---|---|---|---|
| 44024 | 6a | -10 to -5°F | 1 km |
| 44046 | 6a | -10 to -5°F | 11 km |
| 44064 | 6a | -10 to -5°F | 13 km |
| 44086 | 6a | -10 to -5°F | 15 km |
| 44065 | 6a | -10 to -5°F | 15 km |
| 44021 | 6a | -10 to -5°F | 16 km |
| 44099 | 6a | -10 to -5°F | 18 km |
| 44023 | 6a | -10 to -5°F | 24 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 USC00331458, at 41.5872, -81.1914, elevation 344 m (1,130 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 142.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Kirtland-Holden 2 (10 km)
- Painesville 4 NW (20 km)
- Hiram (34 km)
- Cleveland Burke Airport (42 km)
- Dorset (45 km)
- Ashtabula Co Airport (46 km)
- Mosquito Creek Lake (48 km)
- Ravenna 2 S (51 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.