Frost dates for Stillwater 2 W, OK
At Stillwater 2 W, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Oct 30, for a typical growing season of 206 days. For a 90% chance that the last frost has passed, wait until Apr 21. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 5Last spring frost (median)50% chance of 32°F after this date
- Apr 21Safer planting date10% chance of 32°F after this date
- Oct 30First 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 2 |
| 32°F | Mar 21 | Apr 5 | Apr 21 |
| 28°F | Mar 6 | Mar 27 | Apr 10 |
| 24°F | Feb 24 | Mar 13 | Mar 31 |
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 6 | Oct 22 | Nov 3 |
| 32°F | Oct 16 | Oct 30 | Nov 15 |
| 28°F | Oct 24 | Nov 9 | Nov 25 |
| 24°F | Oct 31 | Nov 17 | Dec 5 |
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 | 166 days | 185 days | 205 days |
| 32°F | 184 days | 206 days | 227 days |
| 28°F | 204 days | 227 days | 252 days |
| 24°F | 222 days | 249 days | 275 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 |
|---|---|---|---|
| 74078 | 7a | 0 to 5°F | 1 km |
| 74077 | 7a | 0 to 5°F | 2 km |
| 74074 | 7a | 0 to 5°F | 5 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 USW00053926, at 36.1181, -97.0914, elevation 271 m (890 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 88.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Stillwater 2 W (0 km)
- Stillwater Mesonet (0 km)
- Stillwater 5 WNW (2 km)
- Stillwater Regional Airport (5 km)
- Coyle 7n Mesonet (12 km)
- Perkins 2nnw Mesonet (14 km)
- Orlando 5e Mesonet (18 km)
- Perry (26 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.