Climate · Fairwood

Fairwood, WA climate

Fairwood has mild winters and cool summers. A typical July afternoon reaches 76°, a January night drops to 36°, and about 6 inches of snow falls in a normal winter.

NOAA 1991-2020 climate normals Updated once a decade
July high
76°
207th coolest of 639 Washington towns
January low
36°
161st mildest of 639 Washington towns
Rain + melted snow
44 in
261st wettest of 639 Washington towns
Snow a winter
6 in
200th snowiest of 581 Washington towns
+6°

6° warmer than normal today. The forecast high is 70°, and a typical Oct 2 in Fairwood peaks around 64°.Live forecast: National Weather Service · Normal: NOAA 1991–2020

A normal year

What a year in Fairwood feels like

Winter

47° / 35°
Typical high / low · 2 days with an inch or more of snow

Spring

59° / 42°
Typical high / low · Last frost around Mar 20

Summer

74° / 54°
Typical high / low · 4 days reach 90° in a normal year

Fall

60° / 45°
Typical high / low · First frost around Nov 10
Best months to be outsideMayJunJulAugSepHighs of 62–84° and lows of 40° or more
Month by month

Fairwood weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January47°36°6.2" 1.8"191 37° – 46°
February49°35°4.3" 2.2"161 35° – 48°
March53°38°4.6" 0.4"170 41° – 50°
April58°41°3.6" 0150 45° – 55°
May65°47°2.3" 0110 51° – 60°
June69°51°1.8" 090 57° – 66°
July76°55°0.8" 050 60° – 69°
August76°55°1.0" 050 62° – 69°
September70°51°1.8" 080 58° – 65°
October60°44°4.4" 0140 49° – 57°
November51°39°6.7" 0.2"180 40° – 50°
December46°35°6.2" 1.7"181 36° – 44°
Year60°44°43.8"6.3"1564

“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.

Rain & snow

Rain and snow in Fairwood

Fairwood gets 44 inches of rain and melted snow a year. November is the wettest month and July the driest. Rain or snow falls on about 156 days a year.

44 in
Rain + melted snow a year
More rain than 64% of U.S. towns
6 in
Snow in a normal winter
Less snow than 77% of U.S. towns
4 days
With 1"+ of snow on the ground
Fewer than 74% of U.S. towns

Rain + melted snow by month

Inches of water
6.7"

Snowfall by month

Inches of snow
2.2"
Frost & the growing season

About 233 frost-free days a year

In half of years the last 32° night comes by March 20 and the first one by November 10. That leaves about 233 frost-free days for gardens, longer than 87% of U.S. towns.

39
nights at or below 32° in a normal year
0
nights below 0° in a normal year
4
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

90° days by month

Average days at 90° or more
Heating & cooling

Heating and cooling a home in Fairwood

Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Fairwood, 94% of that work is heating and 6% is cooling, so the furnace matters far more than the air conditioner.

94%heating
4,369 heating degree daysLess heating than 76% of U.S. towns
285 cooling degree daysLess cooling than 92% of U.S. towns

Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.

Around Fairwood

Fairwood and its neighbors

Fairwood borders 2 towns with climate data. January nights across them vary by 0.7°. Maple Heights-Lake Desire has the coldest January nights (35°) and Renton the hottest July afternoons (77°). Fairwood’s January low is 36° and its July high 76°.

East Renton Highlands: January low 36°, July high 76°Bryn Mawr-Skyway: January low 36°, July high 77°Newcastle: January low 36°, July high 77°Kent: January low 36°, July high 77°Tukwila: January low 36°, July high 77°Mercer Island: January low 37°, July high 77°Seattle: January low 37°, July high 77°Renton: January low 36°, July high 77°Maple Heights-Lake Desire: January low 35°, July high 76°Fairwood: January low 36°, July high 76° FairwoodRentonMaple Heights-Lake Desire
ColderMilder35° to 37°
Fairwood35.5°
Renton36.0° +0.5°

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.

Compared with other towns

How Fairwood compares

Summer heat76° July high
Cooler than 98% of U.S. towns207th coolest of 639 Washington towns
Winter cold36° January low
Milder than 89% of U.S. towns161st mildest of 639 Washington towns
Precipitation44" a year
Wetter than 64% of U.S. towns261st wettest of 639 Washington towns
Snow6" a winter
Less snow than 77% of U.S. towns200th snowiest of 581 Washington towns
Growing season233 frost-free days
Longer than 87% of U.S. towns118th longest of 631 Washington towns

Compared with every U.S. town and city on TownTapestry, each counted once.

Then and now

Warmer than it used to be

+0.9°1991–2020 average vs. the 20th century (1901–2000)

The last 30 years in Fairwood averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.4°). The shift is smaller than in 76% of U.S. towns.

❄️ Winter+1.0° now 41°, was 40°
🌷 Spring+0.7° now 50°, was 50°
☀️ Summer+1.3° now 64°, was 62°
🍂 Fall+0.7° now 53°, was 52°

Change by month1991–2020 average minus 1901–2000 average, at Fairwood’s spot on NOAA’s grid

Year to year

How much a month can swing

A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 35° to 48°. September is the most reliable, staying within 7°.

Coldest to warmest month in 30 yearsNormal
Questions

Common questions about Fairwood’s climate

What is the coldest month in Fairwood?

December, with a typical high of 46° and a low of 35°.

What is the hottest month in Fairwood?

August, with a typical high of 76° and a low of 55°. About 4 days a year reach 90°.

How much snow does Fairwood get?

About 6 inches in a normal winter, most of it in February.

When is the first frost in Fairwood?

In half of years the first 32° night comes by November 10, and the last spring frost by March 20.

What is the rainiest month in Fairwood?

November, with 6.7 inches of rain and melted snow. The year totals 44 inches.

Temperatures and rainfall come from NOAA’s gridded climate normals for Fairwood itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Seattle Tacoma Intl Airport, WA (8 mi, snow) and Kent, WA (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.

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