Frost Dates for Bonney Lake, WA
Based on data from Mcmillin Rsvr weather station, 4 miles away
Elevation: 574 ft
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 11
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 30
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
April 19
First Fall Frost
October 22
Hard Freeze (28°F)
Last Spring Hard Freeze
March 16
First Fall Hard Freeze
November 14
Growing Season
202 Days
April 11 to October 30
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 8b
Avg. annual minimum: 15 to 20°F
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csb
Warm-Summer Mediterranean
Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.
Temperature
30°
50°
70°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 46° | 40° | 33° |
| February | 48° | 41° | 33° |
| March | 52° | 44° | 36° |
| April | 57° | 48° | 39° |
| May | 64° | 54° | 45° |
| June | 69° | 59° | 49° |
| July | 76° | 64° | 52° |
| August | 77° | 65° | 53° |
| September | 70° | 59° | 48° |
| October | 59° | 50° | 42° |
| November | 50° | 43° | 36° |
| December | 45° | 39° | 33° |
Precipitation
0"
2"
4"
6"
6.5"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 6.2 |
| February | 4.8 |
| March | 5.3 |
| April | 4.7 |
| May | 4.8 |
| June | 4.3 |
| July | 3.2 |
| August | 2.9 |
| September | 3.5 |
| October | 5.1 |
| November | 6.3 |
| December | 6.5 |
Sunrise / Sunset
Daylight
Pacific Time (PT)
Longest: 15h 43m · Shortest: 8h 17m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:58 AM | 4:39 PM | 8h 42m |
| February | 7:23 AM | 5:25 PM | 10h 02m |
| March | 7:31 AM | 7:07 PM | 11h 36m |
| April | 6:28 AM | 7:50 PM | 13h 22m |
| May | 5:39 AM | 8:31 PM | 14h 52m |
| June | 5:19 AM | 8:60 PM | 15h 41m |
| July | 5:34 AM | 8:55 PM | 15h 21m |
| August | 6:12 AM | 8:15 PM | 14h 03m |
| September | 6:54 AM | 7:13 PM | 12h 19m |
| October | 7:36 AM | 6:12 PM | 10h 36m |
| November | 7:22 AM | 4:26 PM | 9h 04m |
| December | 7:56 AM | 4:14 PM | 8h 18m |
Nearby Stations
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 FreeAvailable everywhere: iOS, Android, web, and more!