Frost dates for Putnam 3n Mesonet, OK
At Putnam 3n Mesonet, the median last spring frost (32°F) is Apr 8 and the median first fall frost is Nov 1, for a typical growing season of 204 days. For a 90% chance that the last frost has passed, wait until Apr 24. Nearby ZIP codes are in USDA hardiness zones 7a to 7b.
- Apr 8Last spring frost (median)50% chance of 32°F after this date
- Apr 24Safer planting date10% chance of 32°F after this date
- Nov 1First fall frost (median)50% chance of 32°F by this date
- 204 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 4 | Apr 19 | May 2 |
| 32°F | Mar 21 | Apr 8 | Apr 24 |
| 28°F | Mar 6 | Mar 27 | Apr 13 |
| 24°F | Feb 23 | Mar 12 | Apr 2 |
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 9 | Oct 23 | Nov 4 |
| 32°F | Oct 18 | Nov 1 | Nov 15 |
| 28°F | Oct 23 | Nov 8 | Nov 25 |
| 24°F | Oct 30 | Nov 17 | Dec 4 |
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 | 184 days | 204 days |
| 32°F | 183 days | 204 days | 226 days |
| 28°F | 201 days | 226 days | 250 days |
| 24°F | 218 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 |
|---|---|---|---|
| 73659 | 7a | 0 to 5°F | 3 km |
| 73639 | 7b | 5 to 10°F | 18 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 USC00347343, at 35.8989, -98.9603, elevation 589 m (1,932 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 89.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Taloga (16 km)
- Seiling 7wnw Mesonet (33 km)
- Camargo 4wnw Mesonet (38 km)
- Watonga 7w Mesonet (40 km)
- Mutual (41 km)
- Butler 5sw Mesonet (44 km)
- Clinton (44 km)
- Weatherford 4wsw Mesnt (47 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.