Frost Dates for Fort Washakie, WY

Based on data from Lander Hunt Fld AP weather station, 15 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 18
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 27
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 25
First Fall Frost September 22

Hard Freeze (28°F)

Last Spring Hard Freeze May 4
First Fall Hard Freeze October 6
43.01°N, -108.88°W © OpenStreetMap

Growing Season

132 Days May 18 to September 27

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

Avg. annual minimum: −20 to −15°F (−29 to −26°C)

Learn more

Köppen Climate iThe 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

0° 30° 60° 90°
21°
High: 33°F
Avg: 21°F
Low: 10°F
Jan
25°
High: 37°F
Avg: 25°F
Low: 13°F
Feb
36°
High: 49°F
Avg: 36°F
Low: 23°F
Mar
43°
High: 56°F
Avg: 43°F
Low: 30°F
Apr
53°
High: 66°F
Avg: 53°F
Low: 39°F
May
63°
High: 78°F
Avg: 63°F
Low: 48°F
Jun
72°
High: 88°F
Avg: 72°F
Low: 55°F
Jul
70°
High: 86°F
Avg: 70°F
Low: 54°F
Aug
60°
High: 75°F
Avg: 60°F
Low: 45°F
Sep
45°
High: 59°F
Avg: 45°F
Low: 32°F
Oct
32°
High: 44°F
Avg: 32°F
Low: 20°F
Nov
22°
High: 33°F
Avg: 22°F
Low: 10°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.0"
2.3"
2.32"
Jan
2.1"
2.10"
Feb
2.8"
2.83"
Mar
4.0"
4.02"
Apr
3.8"
3.75"
May
2.4"
2.37"
Jun
1.3"
1.31"
Jul
1.3"
1.29"
Aug
2.6"
2.57"
Sep
3.9"
3.88"
Oct
2.9"
2.89"
Nov
3.0"
3.04"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10.5h11.5h13h14.5h15h15h14h12.5h11h9.5h9h
Jan: 7:25 AM – 4:35 PM · 9h 11m
Feb: 6:51 AM – 5:09 PM · 10h 19m
Mar: 6:10 AM – 5:50 PM · 11h 39m
Apr: 5:25 AM – 6:35 PM · 13h 11m
May: 4:46 AM – 7:14 PM · 14h 27m
Jun: 4:26 AM – 7:34 PM · 15h 08m
Jul: 4:34 AM – 7:26 PM · 14h 51m
Aug: 5:07 AM – 6:53 PM · 13h 45m
Sep: 5:52 AM – 6:08 PM · 12h 16m
Oct: 6:36 AM – 5:24 PM · 10h 48m
Nov: 7:15 AM – 4:45 PM · 9h 30m
Dec: 7:34 AM – 4:26 PM · 8h 52m
Daylight Longest: 15h 10m · Shortest: 8h 50m

Nearby Stations

Lander 11 Sse, WY May 13 - October 2 Riverton, WYMay 16 - September 28 Atlantic City, WY Riverton, WYMay 12 - September 24 South Pass City, WY Pavillion, WY May 14 - September 30

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview