Frost dates for Cody 12se, WY
At Cody 12se, the median last spring frost (32°F) is May 24 and the median first fall frost is Sep 15, for a typical growing season of 114 days. For a 90% chance that the last frost has passed, wait until Jun 11. Nearby ZIP codes are in USDA hardiness zones 4b to 5a.
- May 24Last spring frost (median)50% chance of 32°F after this date
- Jun 11Safer planting date10% chance of 32°F after this date
- Sep 15First fall frost (median)50% chance of 32°F by this date
- 114 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 | May 24 | Jun 10 | Jul 1 |
| 32°F | May 10 | May 24 | Jun 11 |
| 28°F | Apr 29 | May 11 | May 26 |
| 24°F | Apr 16 | May 1 | May 16 |
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 | Aug 20 | Sep 5 | Sep 20 |
| 32°F | Sep 1 | Sep 15 | Sep 30 |
| 28°F | Sep 9 | Sep 26 | Oct 10 |
| 24°F | Sep 18 | Oct 5 | Oct 19 |
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 | 54 days | 84 days | 106 days |
| 32°F | 90 days | 114 days | 134 days |
| 28°F | 114 days | 135 days | 154 days |
| 24°F | 135 days | 156 days | 178 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 82440 | 5a | -20 to -15°F | 34 km |
| 82411 | 5a | -20 to -15°F | 34 km |
| 82433 | 4b | -25 to -20°F | 42 km |
| 82422 | 5a | -20 to -15°F | 42 km |
| 82450 | 5a | -20 to -15°F | 43 km |
| 82435 | 5a | -20 to -15°F | 47 km |
| 82434 | 4b | -25 to -20°F | 49 km |
| 82412 | 5a | -20 to -15°F | 50 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 USC00481850, at 44.4139, -108.9006, elevation 1600 m (5,248 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 187.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Cody (19 km)
- Buffalo Bill Dam (24 km)
- Heart Mountain (33 km)
- Sunshine 3ne (38 km)
- Cody 21 SW (40 km)
- Wapiti 1wsw (41 km)
- Emblem (42 km)
- Powell Field Station (42 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.