Frost Dates for Monroe North, WA

Based on data from Monroe weather station, 3 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 23
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 27
First Fall Frost October 16

Hard Freeze (28°F)

Last Spring Hard Freeze March 26
First Fall Hard Freeze November 8
47.88°N, -121.99°W © OpenStreetMap

Growing Season

189 Days April 17 to October 23

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 8b

Avg. annual minimum: 15 to 20°F (−9 to −7°C)

Learn more

Köppen Climate iThe 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.

Köppen climate map

Temperature

30° 50° 70°
38°
High: 44°F
Avg: 38°F
Low: 32°F
Jan
40°
High: 48°F
Avg: 40°F
Low: 32°F
Feb
43°
High: 52°F
Avg: 43°F
Low: 35°F
Mar
48°
High: 57°F
Avg: 48°F
Low: 39°F
Apr
54°
High: 64°F
Avg: 54°F
Low: 44°F
May
58°
High: 68°F
Avg: 58°F
Low: 49°F
Jun
63°
High: 74°F
Avg: 63°F
Low: 52°F
Jul
63°
High: 75°F
Avg: 63°F
Low: 52°F
Aug
58°
High: 69°F
Avg: 58°F
Low: 48°F
Sep
49°
High: 58°F
Avg: 49°F
Low: 41°F
Oct
42°
High: 49°F
Avg: 42°F
Low: 35°F
Nov
37°
High: 43°F
Avg: 37°F
Low: 32°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 6" 6.2"
6.1"
6.08"
Jan
4.8"
4.85"
Feb
5.3"
5.34"
Mar
5.0"
5.04"
Apr
4.3"
4.27"
May
3.3"
3.34"
Jun
2.8"
2.83"
Jul
3.1"
3.07"
Aug
3.2"
3.19"
Sep
4.8"
4.76"
Oct
6.2"
6.17"
Nov
6.2"
6.20"
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 27m
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

Startup 1 E, WA April 15 - October 25 Everett, WAMarch 24 - November 2 Everett Snohomish AP, WA March 9 - November 17 Seattle Sand Pt Wsfo, WA March 8 - November 23 Tolt S Fk Rsvr, WA April 13 - November 10 Snoqualmie Falls, WA March 30 - November 7

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