Tukwila, WA

Climate overview — based on NOAA 1991-2020 normals from SEATTLE TACOMA INTL AP, WA US.

Csb Warm-summer Mediterranean climate 9a USDA hardiness Zone 9a

Year-round temperatures (°F)

30° 40° 50° 60° 70° 80° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Tukwila has an annual average temperature of 53.7°F with about 39.3 inches of precipitation per year and 6.3 inches of snow. The warmest month is August (average high 77.6°F), and the coldest is December (average low 37.1°F). November is typically the wettest month (6.31 in) and July the driest (0.60 in). Snow typically falls from November through March.

Pleasant months
4 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
25.4°F
warmest to coldest month
Heating need
4,212
Cooling need
135

Best time to visit Tukwila

Full guide →

Climate change signal

All-time records →

90 of 366 (24.6%) of Tukwila's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1940s
7
1950s
20
1960s
62
1970s
30
1980s
44
1990s
54
2000s
39
2010s
70
2020s
40

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month Avg High Avg Low Avg Temp Precipitation Snow Rainy days
January 48.0°F 37.7°F 42.8°F 5.78 in 1.8 in 19
February 50.3°F 37.7°F 44.0°F 3.76 in 2.2 in 16
March 54.2°F 39.9°F 47.1°F 4.17 in 0.4 in 17
April 59.3°F 43.3°F 51.3°F 3.18 in 15
May 66.3°F 48.7°F 57.5°F 1.88 in 11
June 71.1°F 53.0°F 62.0°F 1.45 in 9
July 77.4°F 56.8°F 67.1°F 0.60 in 5
August 77.6°F 57.2°F 67.4°F 0.97 in 5
September 71.6°F 53.6°F 62.6°F 1.61 in 8
October 60.5°F 47.0°F 53.8°F 3.91 in 14
November 52.1°F 40.9°F 46.5°F 6.31 in 0.2 in 18
December 47.0°F 37.1°F 42.0°F 5.72 in 1.7 in 18

Climate twins of Tukwila

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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