Frost Dates for Wheatland 4 N, 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 19
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 22
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 24
First Fall Frost September 16

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze May 9
First Fall Hard Freeze October 1
42.11°N, -104.95°W © OpenStreetMap

Growing Season

126 Days May 19 to September 22

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 4b

Learn more

Temperature

10° 40° 70° 100°
30°
High: 43°
Avg: 30°
Low: 17°
Jan
31°
High: 45°
Avg: 31°
Low: 17°
Feb
40°
High: 55°
Avg: 40°
Low: 24°
Mar
46°
High: 62°
Avg: 46°
Low: 30°
Apr
55°
High: 71°
Avg: 55°
Low: 39°
May
65°
High: 83°
Avg: 65°
Low: 48°
Jun
72°
High: 90°
Avg: 72°
Low: 54°
Jul
71°
High: 89°
Avg: 71°
Low: 52°
Aug
62°
High: 80°
Avg: 62°
Low: 43°
Sep
49°
High: 66°
Avg: 49°
Low: 32°
Oct
38°
High: 52°
Avg: 38°
Low: 24°
Nov
30°
High: 43°
Avg: 30°
Low: 16°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 5.7"
0.0"
0.00"
Jan
2.6"
2.58"
Feb
3.6"
3.64"
Mar
5.1"
5.10"
Apr
5.7"
5.68"
May
5.0"
4.98"
Jun
4.5"
4.55"
Jul
3.0"
2.95"
Aug
3.6"
3.57"
Sep
4.9"
4.86"
Oct
1.8"
1.83"
Nov
0.0"
0.00"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h14h15h15h14h12h11h10h9h
Jan: 7:22 AM – 4:38 PM · 9h 15m
Feb: 6:49 AM – 5:11 PM · 10h 21m
Mar: 6:10 AM – 5:50 PM · 11h 40m
Apr: 5:26 AM – 6:34 PM · 13h 09m
May: 4:48 AM – 7:12 PM · 14h 23m
Jun: 4:28 AM – 7:32 PM · 15h 03m
Jul: 4:36 AM – 7:24 PM · 14h 47m
Aug: 5:09 AM – 6:51 PM · 13h 42m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:35 AM – 5:25 PM · 10h 50m
Nov: 7:13 AM – 4:47 PM · 9h 34m
Dec: 7:32 AM – 4:28 PM · 8h 56m
Daylight Longest: 15h 05m · Shortest: 8h 55m

Nearby Stations

Guernsey 2nw, WYMay 7 - October 6 Guernsey Dam #2, WY May 11 - October 3 Whalen Dam Usbr, WY May 7 - October 3 Old Ft Laramie, WY May 14 - September 26 Double Four Rch, WY June 2 - September 9 Glendo Rsvr Usbr, WY May 9 - October 5

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