TODAY AUG21
TEMPERATURE61
HUMIDITY60
PRESSURE
WIND COND.212 1
  • 9067Mon
  • 8864Tue
  • 9265Wed
  • 8759Thu
  • 8457Fri
daynightWeather update from OTHELLO at

Mattawa Average Weather

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
January23°F37°F30°F0.7"
February28°F49°F38°F1.2"
March37°F61°F49°F1.8"
April40°F67°F54°F0.9"
May50°F78°F65°F1.7"
June55°F83°F69°F1.4"
July64°F95°F80°F1.1"
August60°F92°F76°F1.4"
September51°F80°F66°F2.3"
October42°F64°F53°F1.8"
November32°F47°F40°F1.5"
December25°F37°F31°F2.1"

Did you know?

  • The highest monthly average temperature in Mattawa for July is 80 degrees.
  • The lowest monthly average temperature in Mattawa for January is 30 degrees.
  • The most monthly precipitation in Mattawa occurs in September with 2.3 inches.
  • The air quality index in Mattawa is 19% better than the national average.
  • The pollution index in Mattawa is 47% better than the national average.

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Compare Mattawa, WA Weather To Other Cities

Mattawa 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.
IndexMattawaWashingtonNational
Air quality index403650
Pollution index2,683,4108,596,9895,066,862

Mattawa air quality information

MeasurementTotal
Days measured365
Days with good air quality231
Days with moderate air quality116
Days w/ poor A.Q. for sensitive groups14
Days with unhealthy air quality4

Mattawa air quality information

PollutantTotal
Arsenic0.000%
Benzene0.040%
Carbon Tetrachloride0.004%
Lead0.030%
Mercury0.000%

Average monthly Mattawa temperature with heat index

Mattawa monthly precipitation with daily maximum

Mattawa monthly snow depth with daily maximum

Mattawa monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Vantage, WA161864%
Royal City, WA1,6292452%
Desert Aire, WA2,2784020%
Mattawa, WA4,4164020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Dumas, AR4,4163726%
Jacksboro, TX4,4152648%
Lindale, GA4,415524%
Maize, KS4,4143922%
Brookfield, MO4,420375650%
Mattawa, WA4,4164020%
Source: The Mattawa, 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.