Colton, WA

Climate overview — based on NOAA 1991-2020 normals from PULLMAN MOSCOW RGNL AP, WA US.

Dsb Mediterranean continental (warm summer) climate 8a USDA hardiness Zone 8a

Year-round temperatures (°F)

20° 40° 60° 80° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Colton has an annual average temperature of 48.6°F with about 17.5 inches of precipitation per year. The warmest month is August (average high 83.4°F), and the coldest is December (average low 26.9°F). December is typically the wettest month (2.21 in) and July the driest (0.39 in).

Annual swing
35.3°F
warmest to coldest month
Heating need
6,036
Cooling need
117

Best time to visit Colton

Full guide →

Climate change signal

All-time records →

163 of 366 (44.5%) of Colton'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.

1990s
25
2000s
122
2010s
126
2020s
93

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 37.6°F 27.8°F 32.7°F 2.15 in 14
February 41.6°F 29.2°F 35.4°F 1.59 in 13
March 49.3°F 32.9°F 41.1°F 1.95 in 14
April 56.4°F 37.2°F 46.8°F 1.79 in 10
May 65.4°F 43.7°F 54.5°F 1.41 in 10
June 71.9°F 47.7°F 59.8°F 1.17 in 7
July 83.1°F 50.9°F 67.0°F 0.39 in 3
August 83.4°F 50.4°F 66.9°F 0.49 in 4
September 74.2°F 45.4°F 59.8°F 0.65 in 5
October 59.2°F 37.6°F 48.4°F 1.59 in 9
November 44.7°F 32.5°F 38.6°F 2.14 in 13
December 36.6°F 26.9°F 31.7°F 2.21 in 14

Climate twins of Colton

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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