Frost Dates for Genesee, CO

Based on data from Evergreen weather station, 4 miles away

Elevation: 7648 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 23
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. September 22

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost May 29
First Fall Frost September 16

Hard Freeze (28°F)

Last Spring Hard Freeze May 9
First Fall Hard Freeze October 2
39.69°N, 105.27°W © OpenStreetMap

Growing Season

122 Days May 23 to September 22

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 5b

Avg. annual minimum: −15 to −10°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January44°29°13°
February44°29°13°
March51°36°21°
April56°41°27°
May64°50°36°
June76°59°43°
July81°65°49°
August79°63°47°
September73°56°40°
October61°45°29°
November51°36°20°
December44°28°13°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.8
February2.5
March4.4
April4.7
May4.1
June3.0
July3.1
August2.9
September3.0
October3.7
November3.2
December2.6

Sunrise / Sunset

Daylight Mountain Time (MT) Longest: 14h 48m · Shortest: 9h 12m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Time (MT))
Month Sunrise Sunset Daylight
January7:26 AM4:55 PM9h 30m
February7:01 AM5:31 PM10h 30m
March7:20 AM7:02 PM11h 41m
April6:30 AM7:33 PM13h 03m
May5:52 AM8:03 PM14h 11m
June5:38 AM8:25 PM14h 47m
July5:51 AM8:23 PM14h 33m
August6:19 AM7:52 PM13h 34m
September6:48 AM7:03 PM12h 15m
October7:19 AM6:14 PM10h 56m
November6:53 AM4:40 PM9h 46m
December7:21 AM4:33 PM9h 12m

Nearby Stations

Lakewood, COMay 3 - October 7 Marston Fltr Plt, CO May 2 - October 11 Ralston Rsvr, CO May 3 - October 14 Wheat Ridge 2, CO May 5 - October 5 Kassler, COMay 8 - October 3 Strontia Springs Dam, CO May 16 - September 29

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