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Colorado · NOAA station USC00051268

Frost dates for Campo 7 S, CO

At Campo 7 S, the median last spring frost (32°F) is Apr 29 and the median first fall frost is Oct 13, for a typical growing season of 166 days. For a 90% chance that the last frost has passed, wait until May 12. Nearby ZIP codes are in USDA hardiness zone 6b.

  • Apr 29Last spring frost (median)50% chance of 32°F after this date
  • May 12Safer planting date10% chance of 32°F after this date
  • Oct 13First fall frost (median)50% chance of 32°F by this date
  • 166 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.

Campo 7 S: last spring freeze by temperature
Temperature90% chance later50% chance later10% chance later
36°FApr 26May 9May 23
32°FApr 14Apr 29May 12
28°FApr 5Apr 19May 4
24°FMar 21Apr 7Apr 23

First fall frost dates

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

Campo 7 S: first fall freeze by temperature
Temperature10% chance by50% chance by90% chance by
36°FSep 22Oct 4Oct 14
32°FOct 1Oct 13Oct 23
28°FOct 9Oct 22Nov 2
24°FOct 18Oct 30Nov 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.

Campo 7 S: growing season by temperature
Temperature9 in 10 years at least5 in 10 years at least1 in 10 years at least
36°F128 days147 days164 days
32°F148 days166 days182 days
28°F167 days185 days203 days
24°F185 days205 days227 days

Chance of a freeze in any year

Campo 7 S: 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 Campo 7 S with 2023 USDA hardiness zones
ZIPHardiness zoneAvg. extreme lowDistance
810296b-5 to 0°F9 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 USC00051268, at 37.0103, -102.5536, elevation 1251 m (4,105 ft).
  • Data quality: Representative (10+ years), 24 years of freeze data.
  • Average days per year at or below 32°F: 147.
  • 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 Colorado stations · How frost dates are calculated