Frost dates for El Reno 1 N, OK
At El Reno 1 N, the median last spring frost (32°F) is Apr 6 and the median first fall frost is Oct 31, for a typical growing season of 206 days. For a 90% chance that the last frost has passed, wait until Apr 22. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 6Last spring frost (median)50% chance of 32°F after this date
- Apr 22Safer planting date10% chance of 32°F after this date
- Oct 31First fall frost (median)50% chance of 32°F by this date
- 206 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 1 | Apr 17 | May 1 |
| 32°F | Mar 21 | Apr 6 | Apr 22 |
| 28°F | Mar 9 | Mar 26 | Apr 11 |
| 24°F | Feb 27 | Mar 14 | 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 3 | Oct 21 | Nov 4 |
| 32°F | Oct 15 | Oct 31 | Nov 13 |
| 28°F | Oct 24 | Nov 7 | Nov 24 |
| 24°F | Oct 31 | Nov 16 | Dec 3 |
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 | 164 days | 185 days | 205 days |
| 32°F | 185 days | 206 days | 227 days |
| 28°F | 203 days | 226 days | 247 days |
| 24°F | 222 days | 247 days | 271 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 |
|---|---|---|---|
| 73036 | 7b | 5 to 10°F | 5 km |
| 73022 | 7b | 5 to 10°F | 8 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 USC00342818, at 35.5489, -97.9553, elevation 404 m (1,325 ft).
- Data quality: Representative (10+ years), 13 years of freeze data.
- Average days per year at or below 32°F: 76.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- El Reno 5 WNW Mesonet (7 km)
- Oklahoma City Post Airport (28 km)
- Minco 2ssw Mesonet (31 km)
- Kingfisher 1w Mesonet (34 km)
- Geary (34 km)
- Kingfisher (34 km)
- Oklahoma City Will Rogers Airport (37 km)
- Hinton 7w Mesonet (48 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.