Frost dates for Bessie 4wnw Mesonet, OK
At Bessie 4wnw Mesonet, the median last spring frost (32°F) is Apr 3 and the median first fall frost is Nov 1, for a typical growing season of 210 days. For a 90% chance that the last frost has passed, wait until Apr 20. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 3Last spring frost (median)50% chance of 32°F after this date
- Apr 20Safer planting date10% chance of 32°F after this date
- Nov 1First fall frost (median)50% chance of 32°F by this date
- 210 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 | Mar 31 | Apr 15 | Apr 30 |
| 32°F | Mar 15 | Apr 3 | Apr 20 |
| 28°F | Mar 2 | Mar 23 | Apr 10 |
| 24°F | Feb 19 | Mar 8 | Mar 30 |
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 12 | Oct 25 | Nov 5 |
| 32°F | Oct 19 | Nov 1 | Nov 15 |
| 28°F | Oct 24 | Nov 9 | Nov 27 |
| 24°F | Oct 30 | Nov 19 | Dec 6 |
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 | 172 days | 192 days | 212 days |
| 32°F | 189 days | 210 days | 233 days |
| 28°F | 205 days | 231 days | 259 days |
| 24°F | 227 days | 256 days | 282 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 |
|---|---|---|---|
| 73622 | 7b | 5 to 10°F | 5 km |
| 73647 | 7b | 5 to 10°F | 9 km |
| 73624 | 7b | 5 to 10°F | 11 km |
| 73632 | 7b | 5 to 10°F | 20 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 USC00340684, at 35.4017, -99.0583, elevation 511 m (1,676 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 82.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Clinton (13 km)
- Clinton Sherman Airport (22 km)
- Weatherford 4wsw Mesnt (28 km)
- Butler 5sw Mesonet (29 km)
- Weatherford (35 km)
- Hammon 3 SSW (37 km)
- Elk City 4 W (41 km)
- Hobart 4se Mesonet (46 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.