Frost Dates for Upper Baker Dam, WA

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. April 24
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 29
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 April 30
First Fall Frost October 22

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze March 28
First Fall Hard Freeze November 17
48.65°N, -121.69°W © OpenStreetMap

Growing Season

188 Days April 24 to October 29

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 8a

Learn more

Temperature

20° 40° 60° 80°
33°
High: 38°
Avg: 33°
Low: 29°
Jan
36°
High: 42°
Avg: 36°
Low: 29°
Feb
40°
High: 48°
Avg: 40°
Low: 32°
Mar
46°
High: 56°
Avg: 46°
Low: 36°
Apr
53°
High: 64°
Avg: 53°
Low: 42°
May
57°
High: 68°
Avg: 57°
Low: 47°
Jun
63°
High: 74°
Avg: 63°
Low: 51°
Jul
63°
High: 75°
Avg: 63°
Low: 51°
Aug
58°
High: 69°
Avg: 58°
Low: 47°
Sep
48°
High: 56°
Avg: 48°
Low: 41°
Oct
39°
High: 44°
Avg: 39°
Low: 34°
Nov
34°
High: 37°
Avg: 34°
Low: 30°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 5" 10" 15" 16.4"
14.1"
14.13"
Jan
9.7"
9.71"
Feb
9.5"
9.53"
Mar
7.2"
7.21"
Apr
5.8"
5.80"
May
4.2"
4.21"
Jun
3.5"
3.46"
Jul
4.0"
4.03"
Aug
7.2"
7.16"
Sep
12.1"
12.07"
Oct
16.1"
16.05"
Nov
16.4"
16.37"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h10h12h13h15h16h16h14h12h11h9h8h
Jan: 7:45 AM – 4:15 PM · 8h 30m
Feb: 7:02 AM – 4:58 PM · 9h 55m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:17 AM – 6:43 PM · 13h 27m
May: 4:29 AM – 7:31 PM · 15h 02m
Jun: 4:03 AM – 7:57 PM · 15h 55m
Jul: 4:14 AM – 7:46 PM · 15h 33m
Aug: 4:55 AM – 7:05 PM · 14h 09m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:44 AM – 5:16 PM · 10h 31m
Nov: 7:33 AM – 4:27 PM · 8h 54m
Dec: 7:57 AM – 4:03 PM · 8h 05m
Daylight Longest: 15h 56m · Shortest: 8h 04m

Nearby Stations

Concrete Ppl Fish Stn, WA March 28 - November 14 Darrington 21 Nne, WA April 16 - October 25 Newhalem, WAApril 2 - November 14 Diablo Dam, WA April 10 - November 1 Sedro-Woolley, WA March 27 - November 6 Darrington Rs, WA April 16 - October 23

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