Frost Dates for Sheridan Co AP, WY

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 21
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. September 23
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 27
First Fall Frost September 18

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 7
First Fall Hard Freeze October 3
44.77°N, -106.97°W © OpenStreetMap

Growing Season

125 Days May 21 to September 23

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 5a

Learn more

Temperature

10° 30° 50° 70° 90°
24°
High: 36°
Avg: 24°
Low: 12°
Jan
26°
High: 38°
Avg: 26°
Low: 14°
Feb
36°
High: 49°
Avg: 36°
Low: 22°
Mar
43°
High: 57°
Avg: 43°
Low: 30°
Apr
52°
High: 66°
Avg: 52°
Low: 39°
May
62°
High: 77°
Avg: 62°
Low: 47°
Jun
71°
High: 88°
Avg: 71°
Low: 54°
Jul
69°
High: 87°
Avg: 69°
Low: 52°
Aug
59°
High: 76°
Avg: 59°
Low: 43°
Sep
46°
High: 60°
Avg: 46°
Low: 31°
Oct
33°
High: 47°
Avg: 33°
Low: 20°
Nov
24°
High: 37°
Avg: 24°
Low: 12°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 1" 2" 2.9"
1.5"
1.46"
Jan
1.2"
1.23"
Feb
1.8"
1.80"
Mar
2.5"
2.52"
Apr
2.9"
2.85"
May
2.5"
2.54"
Jun
1.7"
1.68"
Jul
1.7"
1.73"
Aug
2.7"
2.74"
Sep
2.9"
2.85"
Oct
1.8"
1.76"
Nov
1.2"
1.24"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h15h15h14h12h11h9h9h
Jan: 7:31 AM – 4:29 PM · 8h 58m
Feb: 6:54 AM – 5:06 PM · 10h 12m
Mar: 6:11 AM – 5:49 PM · 11h 38m
Apr: 5:22 AM – 6:38 PM · 13h 16m
May: 4:41 AM – 7:19 PM · 14h 38m
Jun: 4:19 AM – 7:41 PM · 15h 22m
Jul: 4:28 AM – 7:32 PM · 15h 04m
Aug: 5:04 AM – 6:56 PM · 13h 53m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:39 AM – 5:21 PM · 10h 43m
Nov: 7:21 AM – 4:39 PM · 9h 19m
Dec: 7:41 AM – 4:19 PM · 8h 37m
Daylight Longest: 15h 24m · Shortest: 8h 36m

Nearby Stations

Big Horn, WYMay 17 - September 28 Sheridan Fld Stn, WY May 18 - September 24 Story, WYMay 24 - September 23 Dayton, WYMay 24 - September 18 Burgess Junction, WY Clearmont 5 Sw, WY May 24 - September 16

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