Frost dates for Smith Center, KS
At Smith Center, the median last spring frost (32°F) is Apr 24 and the median first fall frost is Oct 15, for a typical growing season of 173 days. For a 90% chance that the last frost has passed, wait until May 7. Nearby ZIP codes are in USDA hardiness zone 6a.
- Apr 24Last spring frost (median)50% chance of 32°F after this date
- May 7Safer planting date10% chance of 32°F after this date
- Oct 15First fall frost (median)50% chance of 32°F by this date
- 173 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 22 | May 3 | May 16 |
| 32°F | Apr 9 | Apr 24 | May 7 |
| 28°F | Mar 31 | Apr 13 | Apr 28 |
| 24°F | Mar 20 | Apr 4 | Apr 20 |
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 | Sep 22 | Oct 5 | Oct 19 |
| 32°F | Sep 28 | Oct 15 | Oct 28 |
| 28°F | Oct 6 | Oct 24 | Nov 6 |
| 24°F | Oct 18 | Nov 2 | Nov 15 |
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 | 138 days | 154 days | 172 days |
| 32°F | 152 days | 173 days | 193 days |
| 28°F | 172 days | 192 days | 212 days |
| 24°F | 191 days | 210 days | 233 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 |
|---|---|---|---|
| 66967 | 6a | -10 to -5°F | 5 km |
| 66932 | 6a | -10 to -5°F | 13 km |
| 66952 | 6a | -10 to -5°F | 16 km |
| 67638 | 6a | -10 to -5°F | 17 km |
| 67474 | 6a | -10 to -5°F | 21 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 USC00147542, at 39.7772, -98.7783, elevation 555 m (1,820 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 136.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Kirwin Dam (32 km)
- Alton 1 W (37 km)
- Burr Oak 1n (42 km)
- Phillipsburg #2 (46 km)
- Mankato (49 km)
- Glen Elder Lake (50 km)
- Lovewell Dam (66 km)
- Beloit (67 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.