TODAY APR20
TEMPERATURE59
HUMIDITY64
PRESSURE29.97
WIND COND.240 9.4
  • 6836Wed80%
  • 5540Thu
  • 6545Fri
  • 6751Sat70%
  • 6544Sun70%
daynightWeather update from Baltimore, Baltimore-Washington International Airport at

Key findings

  • 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 8% better than the national average
  • The pollution index in Severn is 191% 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 index464350
      Pollution index14,735,0006,283,4705,066,862

      Severn air quality information

      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

      Severn air quality information

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Crownsville, MD1,784468%
      Herald Harbor, MD2,620468%
      Maryland City, MD17,647468%
      Severna Park, MD38,514468%
      Edgemere, MD8,322468%
      Severn, MD49,017468%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Rancho Santa Margarita, CA49,0388978%
      Methuen Town, MA49,0433726%
      Cypress, CA48,9787244%
      La Mirada, CA49,1307244%
      Harrisburg, PA49,1604412%
      Severn, MD49,017468%
      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.