Frost Dates for Salmon Gums Res.Stn., WA
Elevation: 249 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.
October 12
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.
May 26
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
October 25
First Fall Frost
May 16
Hard Freeze (−2°C)
Last Spring Hard Freeze
August 15
First Fall Hard Freeze
June 12
Growing Season
226 Days
October 12 to May 26
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 9b
Avg. annual minimum: −4 to −1°C
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.
Temperature
5°
15°
25°
35°
Avg High
Avg Temp
Avg Low
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 31° | 23° | 14° |
| February | 30° | 22° | 15° |
| March | 27° | 20° | 13° |
| April | 24° | 18° | 10° |
| May | 21° | 14° | 7° |
| June | 18° | 12° | 6° |
| July | 17° | 11° | 5° |
| August | 18° | 12° | 5° |
| September | 21° | 13° | 6° |
| October | 25° | 16° | 8° |
| November | 27° | 19° | 11° |
| December | 30° | 21° | 12° |
Precipitation
0 mm
10 mm
20 mm
30 mm
40 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 36 |
| February | 23 |
| March | 36 |
| April | 23 |
| May | 18 |
| June | 25 |
| July | 25 |
| August | 28 |
| September | 23 |
| October | 18 |
| November | 23 |
| December | 10 |
Sunrise / Sunset
Daylight
Longest: 14h 11m · Shortest: 9h 49m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 5:01 AM | 6:59 PM | 13h 57m |
| February | 5:25 AM | 6:35 PM | 13h 11m |
| March | 5:53 AM | 6:07 PM | 12h 15m |
| April | 6:25 AM | 5:35 PM | 11h 11m |
| May | 6:51 AM | 5:09 PM | 10h 18m |
| June | 7:05 AM | 4:55 PM | 9h 50m |
| July | 6:59 AM | 5:01 PM | 10h 01m |
| August | 6:37 AM | 5:23 PM | 10h 47m |
| September | 6:06 AM | 5:54 PM | 11h 48m |
| October | 5:35 AM | 6:25 PM | 12h 50m |
| November | 5:08 AM | 6:52 PM | 13h 44m |
| December | 4:55 AM | 7:05 PM | 14h 10m |
Nearby Stations
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