Frost Dates for South Greeley, WY

Based on data from Cheyenne Wfo weather station, 4 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 14
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 1
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 20
First Fall Frost September 26

Hard Freeze (28°F)

Last Spring Hard Freeze May 3
First Fall Hard Freeze October 10
41.10°N, -104.81°W © OpenStreetMap

Growing Season

140 Days May 14 to October 1

USDA Hardiness Zone iHardiness 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 (−26 to −23°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

10° 30° 50° 70° 90°
29°
High: 41°F
Avg: 29°F
Low: 18°F
Jan
29°
High: 41°F
Avg: 29°F
Low: 18°F
Feb
37°
High: 49°F
Avg: 37°F
Low: 25°F
Mar
42°
High: 55°F
Avg: 42°F
Low: 30°F
Apr
52°
High: 64°F
Avg: 52°F
Low: 40°F
May
63°
High: 76°F
Avg: 63°F
Low: 49°F
Jun
69°
High: 83°F
Avg: 69°F
Low: 56°F
Jul
67°
High: 81°F
Avg: 67°F
Low: 54°F
Aug
59°
High: 73°F
Avg: 59°F
Low: 45°F
Sep
46°
High: 59°F
Avg: 46°F
Low: 33°F
Oct
36°
High: 48°F
Avg: 36°F
Low: 24°F
Nov
29°
High: 40°F
Avg: 29°F
Low: 18°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 1" 2" 2.5"
1.2"
1.22"
Jan
1.2"
1.19"
Feb
2.1"
2.13"
Mar
2.3"
2.26"
Apr
2.3"
2.34"
May
2.3"
2.27"
Jun
2.5"
2.46"
Jul
1.9"
1.95"
Aug
2.4"
2.40"
Sep
2.4"
2.42"
Oct
1.8"
1.79"
Nov
1.6"
1.55"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14.5h15h14.5h13.5h12.5h11h9.5h9h
Jan: 7:20 AM – 4:40 PM · 9h 21m
Feb: 6:48 AM – 5:12 PM · 10h 25m
Mar: 6:10 AM – 5:50 PM · 11h 40m
Apr: 5:27 AM – 6:33 PM · 13h 07m
May: 4:51 AM – 7:09 PM · 14h 18m
Jun: 4:31 AM – 7:29 PM · 14h 57m
Jul: 4:39 AM – 7:21 PM · 14h 41m
Aug: 5:10 AM – 6:50 PM · 13h 39m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:34 AM – 5:26 PM · 10h 52m
Nov: 7:11 AM – 4:49 PM · 9h 39m
Dec: 7:29 AM – 4:31 PM · 9h 03m
Daylight Longest: 14h 58m · Shortest: 9h 02m

Nearby Stations

Cheyenne, WYMay 12 - October 1 Archer, WYMay 21 - September 24 Hecla 1e, WYMay 27 - September 19 Carpenter 3n, WY May 14 - September 26 Nunn 7 Nne, CO May 13 - September 27 Virginia Dale 7 Ene, CO May 31 - September 19

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