Frost dates for Dennison Wtr Wks, OH
At Dennison Wtr Wks, the median last spring frost (32°F) is Apr 29 and the median first fall frost is Oct 15, for a typical growing season of 170 days. For a 90% chance that the last frost has passed, wait until May 17. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 29Last spring frost (median)50% chance of 32°F after this date
- May 17Safer planting date10% chance of 32°F after this date
- Oct 15First fall frost (median)50% chance of 32°F by this date
- 170 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 25 | May 10 | May 27 |
| 32°F | Apr 17 | Apr 29 | May 17 |
| 28°F | Apr 2 | Apr 17 | May 1 |
| 24°F | Mar 19 | Apr 4 | Apr 17 |
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 19 |
| 32°F | Oct 2 | Oct 15 | Oct 30 |
| 28°F | Oct 11 | Oct 28 | Nov 11 |
| 24°F | Oct 23 | Nov 7 | 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 | 126 days | 147 days | 168 days |
| 32°F | 147 days | 170 days | 190 days |
| 28°F | 171 days | 194 days | 213 days |
| 24°F | 197 days | 217 days | 239 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 |
|---|---|---|---|
| 44653 | 6b | -5 to 0°F | 4 km |
| 44683 | 6b | -5 to 0°F | 5 km |
| 44682 | 6b | -5 to 0°F | 5 km |
| 44621 | 6b | -5 to 0°F | 6 km |
| 44629 | 6b | -5 to 0°F | 11 km |
| 44639 | 6b | -5 to 0°F | 12 km |
| 44675 | 6b | -5 to 0°F | 13 km |
| 44699 | 6b | -5 to 0°F | 14 km |
| 44695 | 6b | -5 to 0°F | 15 km |
| 43837 | 6b | -5 to 0°F | 16 km |
| 44615 | 6b | -5 to 0°F | 29 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 USC00332160, at 40.4056, -81.3436, elevation 262 m (860 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 139.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- New Philadelphia Field (10 km)
- New Philadelphia (12 km)
- Cadiz (33 km)
- Coshocton Ag Rsch Station (38 km)
- Barnesville (48 km)
- Cambridge (48 km)
- Coshocton Wpc Plant (48 km)
- Millersburg (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.