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Oregon · NOAA station USC00354721

Frost dates for Langlois #2, OR

At Langlois #2, the median last spring frost (32°F) is Mar 16 and the median first fall frost is Nov 29, for a typical growing season of 258 days. For a 90% chance that the last frost has passed, wait until Apr 15. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.

  • Mar 16Last spring frost (median)50% chance of 32°F after this date
  • Apr 15Safer planting date10% chance of 32°F after this date
  • Nov 29First fall frost (median)50% chance of 32°F by this date
  • 258 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.

Langlois #2: last spring freeze by temperature
Temperature90% chance later50% chance later10% chance later
36°FMar 29Apr 24May 11
32°FFeb 6Mar 16Apr 15
28°FDec 12Jan 29Mar 6
24°FDec 9Dec 30Feb 18

First fall frost dates

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

Langlois #2: first fall freeze by temperature
Temperature10% chance by50% chance by90% chance by
36°FOct 12Nov 1Nov 26
32°FNov 1Nov 29Jan 4
28°FNov 17Dec 21Feb 15
24°FDec 6Dec 25Feb 12

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.

Langlois #2: growing season by temperature
Temperature9 in 10 years at least5 in 10 years at least1 in 10 years at least
36°F166 days194 days226 days
32°F215 days258 days305 days
28°F286 days334 days365 days
24°F343 days365 days365 days

Chance of a freeze in any year

Langlois #2: probability of at least one day at or below each temperature
TemperatureChance per year
36°F100%
32°F100%
28°F74%
24°F22%

ZIP codes whose closest station is this one

ZIP codes near Langlois #2 with 2023 USDA hardiness zones
ZIPHardiness zoneAvg. extreme lowDistance
974509a20 to 25°F7 km
974769b25 to 30°F10 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 USC00354721, at 42.9242, -124.4533, elevation 27 m (90 ft).
  • Data quality: Representative (10+ years), 24 years of freeze data.
  • Average days per year at or below 32°F: 15.
  • 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 Oregon stations · How frost dates are calculated