TODAY DEC22
TEMPERATURE30
HUMIDITY43
PRESSURE102540
WIND COND.320 14.8
  • 3114Sun
  • 3526Mon
  • 4529Tue30%
  • 4228
  • 4432Thu
daynightWeather update from Baltimore, Baltimore-Washington International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Severn for July is 78.5 degrees
  • The lowest monthly average temperature in Severn for January is 34.4 degrees
  • The most monthly precipitation in Severn occurs in October with 5.7 inches
  • The air quality index in Severn is 9% worse than the national average
  • The pollution index in Severn is 440% worse than the national average

Compare Severn, MD Weather

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      Severn 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
      January25°F46°F34°F3.1"
      February25°F47°F36°F2.7"
      March33°F58°F45°F3.6"
      April43°F70°F56°F3.8"
      May52°F77°F65°F4.1"
      June62°F86°F74°F4.7"
      July67°F90°F78°F4.5"
      August65°F88°F76°F4.7"
      September58°F82°F70°F4.3"
      October47°F70°F58°F5.7"
      November36°F59°F47°F2.8"
      December30°F50°F39°F4.3"

      Severn 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.
      IndexSevernMarylandNational
      Air quality index464342
      Pollution index14,735,0005,342,3672,726,193

      Severn air quality

      MeasurementTotal
      Days measured365
      Days with good air quality223
      Days with moderate air quality129
      Days w/ poor A.Q. for sensitive groups13
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.220%
      Benzene0.090%
      Carbon Tetrachloride0.030%
      Lead0.110%
      Mercury0.270%

      Average monthly Severn temperature with heat index

      Severn monthly precipitation with daily maximum

      Severn monthly snow depth with daily maximum

      Severn monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      North Laurel, MD24,856468.0%
      Elkridge, MD21,778468.0%
      Riviera Beach, MD12,780468.0%
      Annapolis Neck, MD13,049468.0%
      Naval Academy, MD5,609468.0%
      Severn, MD53,374468.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Revere, MA53,4004314.0%
      Brandon, MB53,334n/a 
      Hoboken, NJ53,283512.0%
      Pinellas Park, FL53,4864314.0%
      Harrisonburg, VA53,5583628.0%
      Severn, MD53,374468.0%
      Source: The Severn, 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.