Frost dates for Newkirk 8E Mesonet, OK
At Newkirk 8E Mesonet, the median last spring frost (32°F) is Apr 6 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 23. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 6Last spring frost (median)50% chance of 32°F after this date
- Apr 23Safer 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
USDA hardiness zone 7a (0 to 5°F) · see all zone 7a frost dates
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 18 | May 3 |
| 32°F | Mar 20 | Apr 6 | Apr 23 |
| 28°F | Mar 6 | Mar 26 | Apr 12 |
| 24°F | Feb 24 | Mar 13 | 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 5 | Oct 20 | Nov 2 |
| 32°F | Oct 15 | Oct 30 | Nov 13 |
| 28°F | Oct 22 | Nov 7 | Nov 25 |
| 24°F | Oct 30 | 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 | 162 days | 185 days | 207 days |
| 32°F | 183 days | 206 days | 229 days |
| 28°F | 203 days | 227 days | 253 days |
| 24°F | 220 days | 246 days | 272 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 |
|---|---|---|---|
| 74641 | 7a | 0 to 5°F | 11 km |
| 67102 | 7a | 0 to 5°F | 17 km |
| 74652 | 7a | 0 to 5°F | 24 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 USC00346282, at 36.8981, -96.9103, elevation 366 m (1,200 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 93.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Newkirk 5NE (10 km)
- Ponca City Muni Airport (25 km)
- Blackwell 4SSE Mesonet (35 km)
- Blackwell 1SSW (36 km)
- Ralston (46 km)
- Pawhuska (56 km)
- Billings (63 km)
- Red Rock 7SSE Mesonet (64 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.