TODAY DEC11
TEMPERATURE43
HUMIDITY100
PRESSURE30.09
WIND COND.
  • 5045Wed70%100%
  • 4942Thu90%80%
  • 4738Fri60%40%
  • 4534Sat
  • 4437Sun
daynightWeather update from Tacoma / McChord Air Force Base at
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Summit Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January33°F47°F39°F7.4"
February33°F51°F41°F4.9"
March36°F55°F44°F6.1"
April38°F60°F48°F4.0"
May44°F67°F55°F4.5"
June49°F72°F60°F3.0"
July52°F80°F65°F1.5"
August52°F80°F65°F3.4"
September48°F73°F60°F4.4"
October42°F62°F51°F6.3"
November36°F52°F44°F8.2"
December32°F46°F38°F6.9"

Did you know?

  • The highest monthly average temperature in Summit for July is 65 degrees.
  • The lowest monthly average temperature in Summit for December is 38 degrees.
  • The most monthly precipitation in Summit occurs in November with 8.2 inches.
  • The air quality index in Summit is 38% better than the national average.
  • The pollution index in Summit is 249% worse than the national average.

Compare Summit, WA Weather To Other Cities

Summit air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexSummitWashingtonNational
Air quality index313650
Pollution index17,693,8008,596,9895,066,862

Summit air quality information

MeasurementTotal
Days measured364
Days with good air quality291
Days with moderate air quality70
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

Summit air quality information

PollutantTotal
Arsenic0.010%
Benzene0.300%
Carbon Tetrachloride0.050%
Lead0.110%
Mercury0.020%

Average monthly Summit temperature with heat index

Summit monthly precipitation with daily maximum

Summit monthly snow depth with daily maximum

Summit monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Dash Point, WA9391766%
Wauna, WA4,4471766%
Ruston, WA9691766%
Tacoma, WA205,6021766%
Browns Point, WA1,1871766%
Summit, WA7,6463138%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Ivins, UT7,6464118%
Burton, SC7,6483432%
Clear Lake, IA7,6441864%
Waikele, HI7,6483040%
Gettysburg, PA7,6434314%
Summit, WA7,6463138%
Source: The Summit, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.
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