Frost dates for Hobart Muni Airport, OK
At Hobart Muni Airport, the median last spring frost (32°F) is Apr 4 and the median first fall frost is Nov 4, for a typical growing season of 214 days. For a 90% chance that the last frost has passed, wait until Apr 21. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 4Last spring frost (median)50% chance of 32°F after this date
- Apr 21Safer planting date10% chance of 32°F after this date
- Nov 4First fall frost (median)50% chance of 32°F by this date
- 214 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 15 | Apr 4 | Apr 21 |
| 28°F | Mar 1 | Mar 21 | Apr 8 |
| 24°F | Feb 17 | Mar 7 | 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 14 | Oct 27 | Nov 9 |
| 32°F | Oct 22 | Nov 4 | Nov 18 |
| 28°F | Oct 27 | Nov 13 | Dec 1 |
| 24°F | Nov 5 | Nov 24 | Dec 13 |
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 | 173 days | 193 days | 215 days |
| 32°F | 191 days | 214 days | 238 days |
| 28°F | 211 days | 237 days | 263 days |
| 24°F | 229 days | 261 days | 289 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 |
|---|---|---|---|
| 73564 | 7b | 5 to 10°F | 16 km |
| 73041 | 7b | 5 to 10°F | 17 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 USW00093986, at 34.9894, -99.0525, elevation 474 m (1,556 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 80.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hobart 4se Mesonet (0 km)
- Altus Dam (25 km)
- Clinton Sherman Airport (25 km)
- Mangum 5se Mesonet (38 km)
- Wichita Mountain Wr (42 km)
- Mangum (42 km)
- Bessie 4wnw Mesonet (46 km)
- Carnegie 5 NE (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.