TODAY NOV22
TEMPERATURE29
HUMIDITY74
PRESSURE100510
WIND COND.290 9.4
  • 3936Fri30%
  • 4430Sat
  • 5633Sun
  • 6444Mon
  • 5331Tue40%
daynightWeather update from Virginia Tech Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Merrimac for July is 72.9 degrees
  • The lowest monthly average temperature in Merrimac for January is 33.7 degrees
  • The most monthly precipitation in Merrimac occurs in October with 12.8 inches
  • The air quality index in Merrimac is 3% better than the national average
  • The pollution index in Merrimac is 91% better than the national average

Compare Merrimac, VA Weather

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      Merrimac 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°F44°F34°F5.2"
      February26°F47°F35°F6.2"
      March35°F57°F45°F5.0"
      April44°F68°F55°F6.9"
      May52°F74°F62°F6.4"
      June60°F82°F71°F11.7"
      July64°F84°F73°F7.3"
      August63°F83°F72°F6.6"
      September56°F77°F65°F10.4"
      October45°F67°F55°F12.8"
      November34°F57°F44°F5.4"
      December30°F49°F38°F6.2"

      Merrimac 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.
      IndexMerrimacVirginiaNational
      Air quality index415842
      Pollution index243,9021,561,8812,726,193

      Merrimac air quality

      MeasurementTotal
      Days measured365
      Days with good air quality306
      Days with moderate air quality55
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.020%
      Benzene0.003%
      Carbon Tetrachloride0.001%
      Lead0.020%
      Mercury0.000%

      Average monthly Merrimac temperature with heat index

      Merrimac monthly precipitation with daily maximum

      Merrimac monthly snow depth with daily maximum

      Merrimac monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Shawsville, VA1,9524118.0%
      Fairlawn, VA2,6564118.0%
      Plum Creek, VA1,0664118.0%
      Snowville, VA654118.0%
      Christiansburg, VA22,4824118.0%
      Merrimac, VA2,8934118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Palo Cedro, CA2,8934216.0%
      Deer Lodge, MT2,8932060.0%
      Saint-Alexis-des-Monts, QC2,893n/a 
      Yadkinville, NC2,8924510.0%
      Bedford Hills, NY2,8924314.0%
      Merrimac, VA2,8934118.0%
      Source: The Merrimac, VA 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.