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Oklahoma · NOAA station USC00348027

Frost dates for Seiling 7wnw Mesonet, OK

At Seiling 7wnw Mesonet, the median last spring frost (32°F) is Apr 11 and the median first fall frost is Oct 25, for a typical growing season of 194 days. For a 90% chance that the last frost has passed, wait until Apr 26. Nearby ZIP codes are in USDA hardiness zone 7a.

  • Apr 11Last spring frost (median)50% chance of 32°F after this date
  • Apr 26Safer planting date10% chance of 32°F after this date
  • Oct 25First fall frost (median)50% chance of 32°F by this date
  • 194 daysGrowing season (median)between 32°F freezes

Planting date calculator

Pick how much frost risk you accept and how many weeks before or after the last frost your seed packet says to plant.

From your seed packet, e.g. “start 6 weeks before last frost”.

–Last spring frost
–First fall frost
–Your planting date
–Hardiness zone

Last spring frost dates

The chance that the temperature drops to the threshold after each date.

Seiling 7wnw Mesonet: last spring freeze by temperature
Temperature90% chance later50% chance later10% chance later
36°FApr 7Apr 21May 5
32°FMar 26Apr 11Apr 26
28°FMar 13Apr 1Apr 16
24°FMar 1Mar 19Apr 6

First fall frost dates

The chance that the temperature has dropped to the threshold by each date.

Seiling 7wnw Mesonet: first fall freeze by temperature
Temperature10% chance by50% chance by90% chance by
36°FSep 30Oct 15Oct 28
32°FOct 12Oct 25Nov 7
28°FOct 20Nov 2Nov 16
24°FOct 27Nov 11Nov 29

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.

Seiling 7wnw Mesonet: growing season by temperature
Temperature9 in 10 years at least5 in 10 years at least1 in 10 years at least
36°F156 days175 days194 days
32°F174 days194 days216 days
28°F195 days216 days239 days
24°F213 days236 days261 days

Chance of a freeze in any year

Seiling 7wnw Mesonet: probability of at least one day at or below each temperature
TemperatureChance per year
36°F100%
32°F100%
28°F100%
24°F100%

ZIP codes whose closest station is this one

ZIP codes near Seiling 7wnw Mesonet with 2023 USDA hardiness zones
ZIPHardiness zoneAvg. extreme lowDistance
738387a0 to 5°F16 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 USC00348027, at 36.1903, -99.0403, elevation 545 m (1,788 ft).
  • Data quality: Representative (10+ years), 12 years of freeze data.
  • Average days per year at or below 32°F: 106.
  • Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.

Nearby weather stations

Sources

Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.

All Oklahoma stations · How frost dates are calculated