Frost dates for Bowling Green Warren Co Airport, KY
At Bowling Green Warren Co Airport, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Oct 31, for a typical growing season of 208 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 31First fall frost (median)50% chance of 32°F by this date
- 208 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 2 | Apr 16 | May 4 |
| 32°F | Mar 20 | Apr 5 | Apr 21 |
| 28°F | Mar 4 | Mar 24 | Apr 7 |
| 24°F | Feb 20 | Mar 10 | Mar 29 |
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 22 | Nov 2 |
| 32°F | Oct 20 | Oct 31 | Nov 11 |
| 28°F | Oct 30 | Nov 10 | Nov 25 |
| 24°F | Nov 6 | Nov 20 | Dec 8 |
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 | 165 days | 186 days | 207 days |
| 32°F | 187 days | 208 days | 229 days |
| 28°F | 211 days | 232 days | 256 days |
| 24°F | 232 days | 256 days | 281 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 |
|---|---|---|---|
| 42103 | 7a | 0 to 5°F | 9 km |
| 42104 | 7a | 0 to 5°F | 10 km |
| 42101 | 7a | 0 to 5°F | 11 km |
| 42122 | 7a | 0 to 5°F | 13 km |
| 42274 | 7a | 0 to 5°F | 16 km |
| 42170 | 7a | 0 to 5°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 USW00093808, at 36.9647, -86.4239, elevation 159 m (523 ft).
- Data quality: Standard (24+ years of data), 29 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
- Barren River Lake (28 km)
- Scottsville (30 km)
- Mammoth Cave (31 km)
- Bowling Green 21 NNE (36 km)
- Nolin River Lake (38 km)
- Russellville (43 km)
- Glasgow (46 km)
- Rochester Ferry (50 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.