Frost Dates for Manson, WA

Based on data from Chelan weather station, 8 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. April 17
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 22
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 24
First Fall Frost October 17

Hard Freeze (28°F)

Last Spring Hard Freeze March 29
First Fall Hard Freeze November 4
47.88°N, -120.16°W © OpenStreetMap

Growing Season

188 Days April 17 to October 22

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 7b

Avg. annual minimum: 5 to 10°F (−15 to −12°C)

Learn more

Köppen Climate iThe 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

20° 40° 60° 80°
28°
High: 34°F
Avg: 28°F
Low: 22°F
Jan
33°
High: 42°F
Avg: 33°F
Low: 24°F
Feb
41°
High: 52°F
Avg: 41°F
Low: 30°F
Mar
50°
High: 62°F
Avg: 50°F
Low: 38°F
Apr
59°
High: 72°F
Avg: 59°F
Low: 46°F
May
66°
High: 78°F
Avg: 66°F
Low: 53°F
Jun
73°
High: 87°F
Avg: 73°F
Low: 59°F
Jul
73°
High: 87°F
Avg: 73°F
Low: 58°F
Aug
63°
High: 77°F
Avg: 63°F
Low: 49°F
Sep
51°
High: 62°F
Avg: 51°F
Low: 39°F
Oct
38°
High: 46°F
Avg: 38°F
Low: 30°F
Nov
29°
High: 35°F
Avg: 29°F
Low: 23°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.3"
3.5"
3.52"
Jan
2.9"
2.92"
Feb
3.0"
2.98"
Mar
2.6"
2.59"
Apr
2.6"
2.56"
May
2.5"
2.49"
Jun
0.6"
0.63"
Jul
0.0"
0.00"
Aug
0.4"
0.36"
Sep
2.4"
2.41"
Oct
3.1"
3.15"
Nov
4.3"
4.34"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:42 AM – 4:18 PM · 8h 36m
Feb: 7:00 AM – 4:60 PM · 9h 59m
Mar: 6:12 AM – 5:48 PM · 11h 35m
Apr: 5:18 AM – 6:42 PM · 13h 24m
May: 4:32 AM – 7:28 PM · 14h 57m
Jun: 4:06 AM – 7:54 PM · 15h 47m
Jul: 4:17 AM – 7:43 PM · 15h 26m
Aug: 4:57 AM – 7:03 PM · 14h 06m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:43 AM – 5:17 PM · 10h 34m
Nov: 7:30 AM – 4:30 PM · 8h 60m
Dec: 7:54 AM – 4:06 PM · 8h 12m
Daylight Longest: 15h 49m · Shortest: 8h 11m

Nearby Stations

Waterville, WAMay 14 - October 1 Entiat Fish Hatchery, WA April 5 - October 24 Methow 2 S, WA April 21 - October 15 Chief Joseph Dam, WA April 26 - October 11 Plain, WAMay 22 - September 22 Wenatchee, WAApril 4 - October 28

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