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Tennessee · NOAA station USC00408562

Frost dates for Springfield Exp. Station, TN

At Springfield Exp. Station, the median last spring frost (32°F) is Apr 9 and the median first fall frost is Oct 28, for a typical growing season of 201 days. For a 90% chance that the last frost has passed, wait until Apr 28. Nearby ZIP codes are in USDA hardiness zone 7a.

  • Apr 9Last spring frost (median)50% chance of 32°F after this date
  • Apr 28Safer planting date10% chance of 32°F after this date
  • Oct 28First fall frost (median)50% chance of 32°F by this date
  • 201 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.

Springfield Exp. Station: last spring freeze by temperature
Temperature90% chance later50% chance later10% chance later
36°FApr 4Apr 22May 8
32°FMar 22Apr 9Apr 28
28°FMar 8Mar 28Apr 14
24°FFeb 23Mar 15Apr 4

First fall frost dates

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

Springfield Exp. Station: first fall freeze by temperature
Temperature10% chance by50% chance by90% chance by
36°FOct 5Oct 18Oct 30
32°FOct 14Oct 28Nov 10
28°FOct 23Nov 6Nov 26
24°FNov 2Nov 19Dec 10

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.

Springfield Exp. Station: growing season by temperature
Temperature9 in 10 years at least5 in 10 years at least1 in 10 years at least
36°F159 days180 days200 days
32°F180 days201 days224 days
28°F200 days225 days251 days
24°F222 days248 days277 days

Chance of a freeze in any year

Springfield Exp. Station: 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 Springfield Exp. Station with 2023 USDA hardiness zones
ZIPHardiness zoneAvg. extreme lowDistance
370737a0 to 5°F5 km
371727a0 to 5°F9 km
370327a0 to 5°F17 km
371467a0 to 5°F19 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 USC00408562, at 36.4711, -86.8414, elevation 227 m (745 ft).
  • Data quality: Standard (24+ years of data), 25 years of freeze data.
  • Average days per year at or below 32°F: 91.
  • 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 Tennessee stations · How frost dates are calculated