TODAY NOV25
TEMPERATURE79
HUMIDITY62
PRESSURE101830
WIND COND.180 24.1
  • 6649Tue
  • 7860Wed
  • 684130%
  • 5636Fri
  • 5941Sat20%
daynightWeather update from Lafayette, Lafayette Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Washington for July is 81.1 degrees
  • The lowest monthly average temperature in Washington for January is 52.8 degrees
  • The most monthly precipitation in Washington occurs in August with 16.1 inches
  • The air quality index in Washington is 3% better than the national average
  • The pollution index in Washington is 10% better than the national average

Compare Washington, LA Weather

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      Washington 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
      January44°F65°F53°F10.2"
      February49°F70°F58°F7.3"
      March56°F74°F64°F10.7"
      April60°F80°F69°F12.3"
      May65°F82°F73°F13.0"
      June72°F87°F78°F9.4"
      July73°F91°F81°F5.5"
      August72°F91°F80°F16.1"
      September67°F89°F77°F5.4"
      October58°F83°F69°F15.2"
      November53°F74°F62°F9.7"
      December47°F65°F55°F10.6"

      Washington 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.
      IndexWashingtonLouisianaNational
      Air quality index4110642
      Pollution index2,459,3202,526,4752,726,193

      Washington air quality

      MeasurementTotal
      Days measured365
      Days with good air quality280
      Days with moderate air quality85
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.050%
      Benzene0.010%
      Carbon Tetrachloride0.004%
      Lead0.050%
      Mercury0.040%

      Average monthly Washington temperature with heat index

      Washington monthly precipitation with daily maximum

      Washington monthly snow depth with daily maximum

      Washington monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Opelousas, LA16,6874118.0%
      Ville Platte, LA7,1174118.0%
      Sunset, LA2,9234118.0%
      Leonville, LA2,1274118.0%
      Arnaudville, LA1,6144118.0%
      Washington, LA8604118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Riceville, IA8601570.0%
      Gaston, IN8603530.0%
      Calvert Beach, MD8604118.0%
      Hollister, NC8603628.0%
      North Light Plant, NM860492.0%
      Washington, LA8604118.0%
      Source: The Washington, LA 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.