Frost Dates for Evansville, WY

Based on data from Casper 1sw weather station, 1 miles away

Elevation: 5125 ft

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 12
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 18
First Fall Frost September 27

Hard Freeze (28°F)

Last Spring Hard Freeze April 30
First Fall Hard Freeze October 13
42.86°N, -106.27°W © OpenStreetMap

Growing Season

142 Days May 12 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°
27°
High: 37°F
Avg: 27°F
Low: 16°F
Jan
28°
High: 39°F
Avg: 28°F
Low: 17°F
Feb
37°
High: 50°F
Avg: 37°F
Low: 25°F
Mar
44°
High: 56°F
Avg: 44°F
Low: 31°F
Apr
52°
High: 65°F
Avg: 52°F
Low: 40°F
May
64°
High: 78°F
Avg: 64°F
Low: 50°F
Jun
72°
High: 87°F
Avg: 72°F
Low: 57°F
Jul
70°
High: 86°F
Avg: 70°F
Low: 54°F
Aug
60°
High: 75°F
Avg: 60°F
Low: 45°F
Sep
47°
High: 60°F
Avg: 47°F
Low: 34°F
Oct
37°
High: 48°F
Avg: 37°F
Low: 26°F
Nov
27°
High: 37°F
Avg: 27°F
Low: 17°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 1" 2" 3" 4.0"
2.2"
2.22"
Jan
2.4"
2.36"
Feb
3.4"
3.40"
Mar
3.7"
3.70"
Apr
4.0"
3.96"
May
3.2"
3.17"
Jun
3.1"
3.10"
Jul
3.1"
3.10"
Aug
3.3"
3.29"
Sep
3.2"
3.24"
Oct
2.1"
2.13"
Nov
2.7"
2.67"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h14h12.5h11h9.5h9h
Jan: 7:39 AM – 4:50 PM · 9h 11m
Feb: 7:10 AM – 5:29 PM · 10h 19m
Mar: 7:25 AM – 7:04 PM · 11h 39m
Apr: 6:30 AM – 7:41 PM · 13h 11m
May: 5:48 AM – 8:15 PM · 14h 27m
Jun: 5:31 AM – 8:40 PM · 15h 09m
Jul: 5:45 AM – 8:37 PM · 14h 52m
Aug: 6:17 AM – 8:02 PM · 13h 45m
Sep: 6:51 AM – 7:08 PM · 12h 16m
Oct: 7:26 AM – 6:14 PM · 10h 48m
Nov: 7:05 AM – 4:35 PM · 9h 30m
Dec: 7:35 AM – 4:27 PM · 8h 51m
Daylight Mountain Time (MT) Longest: 15h 10m · Shortest: 8h 50m

Nearby Stations

Casper Wwtp, WY May 10 - September 29 Casper Natrona Co AP, WY May 26 - September 22 Bates Creek #2, WY May 22 - September 26 Shirley Basin, WY Powder River #2, WY May 23 - September 20 Powder Rvr (School), WY May 30 - September 22

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