TODAY AUG16
TEMPERATURE75
HUMIDITY82
PRESSURE30.08
WIND COND.
  • 9272Fri20%50%
  • 8567Sat40%50%
  • 8167Sun30%30%
  • 8268Mon
  • 8570Tue50%50%
daynightWeather update from Washington/Reagan National Airport, DC at

Bethesda 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
January28°F47°F37°F2.7"
February29°F50°F38°F2.3"
March37°F60°F47°F3.2"
April47°F71°F58°F3.4"
May56°F78°F67°F4.6"
June67°F87°F77°F5.3"
July72°F91°F81°F4.2"
August70°F90°F79°F3.2"
September63°F83°F72°F3.5"
October52°F72°F61°F5.0"
November40°F61°F50°F2.5"
December33°F52°F42°F3.8"

Did you know?

  • The highest monthly average temperature in Bethesda for July is 81 degrees.
  • The lowest monthly average temperature in Bethesda for January is 37 degrees.
  • The most monthly precipitation in Bethesda occurs in June with 5.3 inches.
  • The air quality index in Bethesda is 1% better than the national average.
  • The pollution index in Bethesda is 190% worse than the national average.

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Compare Bethesda, MD Weather To Other Cities

Bethesda 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.
IndexBethesdaMarylandNational
Air quality index494350
Pollution index14,693,9006,283,4705,066,862

Bethesda air quality information

MeasurementTotal
Days measured365
Days with good air quality194
Days with moderate air quality166
Days w/ poor A.Q. for sensitive groups5
Days with unhealthy air quality

Bethesda air quality information

PollutantTotal
Arsenic0.190%
Benzene0.210%
Carbon Tetrachloride0.060%
Lead0.060%
Mercury0.010%

Average monthly Bethesda temperature with heat index

Bethesda monthly precipitation with daily maximum

Bethesda monthly snow depth with daily maximum

Bethesda monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Columbia, MD103,439468%
North Laurel, MD23,590468%
Sugarland Run, VA12,805492%
West Falls Church, VA29,059492%
Washington, DC659,009492%
Bethesda, MD62,608492%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Waltham, MA62,699476%
South Jordan, UT62,751476%
Broomfield, CO62,4494216%
Greenville, SC62,7764020%
Bowling Green, KY62,8243824%
Bethesda, MD62,608492%
Source: The Bethesda, MD 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.