Frost Dates for Hatton 9 Se, WA

Elevation: 459 m

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. April 25
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 15

30% Probability

Only 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 1
First Fall Frost October 10

Hard Freeze (28°F)

Last Spring Hard Freeze April 1
First Fall Hard Freeze October 28
46.72°N, 118.65°W © OpenStreetMap

Growing Season

173 Days April 25 to October 15

USDA Hardiness Zone

Hardiness 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 7a

Avg. annual minimum: 0 to 5°F

Learn more

Köppen Climate

The 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

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January39°33°27°
February45°37°29°
March55°44°34°
April63°51°38°
May73°59°45°
June80°65°51°
July90°74°58°
August88°73°57°
September79°64°50°
October63°51°40°
November47°39°32°
December38°32°26°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.3
February2.1
March2.6
April2.6
May2.5
June2.1
July0.0
August0.0
September1.2
October3.0
November2.6
December2.5

Sunrise / Sunset

Daylight Longest: 15h 39m · Shortest: 8h 21m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:38 AM4:22 PM8h 45m
February6:58 AM5:02 PM10h 04m
March6:12 AM5:48 PM11h 36m
April5:19 AM6:41 PM13h 21m
May4:35 AM7:25 PM14h 49m
June4:11 AM7:49 PM15h 38m
July4:21 AM7:39 PM15h 18m
August4:60 AM7:00 PM14h 01m
September5:51 AM6:09 PM12h 19m
October6:41 AM5:19 PM10h 37m
November7:27 AM4:33 PM9h 07m
December7:49 AM4:11 PM8h 22m

Nearby Stations

Connell 1 W, WA April 30 - October 12 Lind 3 Ne, WAMay 7 - October 4 Sagemoor, WAApril 30 - October 13 Ritzville 1 Sse, WA May 7 - October 10 Eltopia 8 Wsw, WA April 21 - October 22 Ice Harbor Dam, WA April 7 - October 22

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