TODAY NOV18
TEMPERATURE33
HUMIDITY78
PRESSURE30.31
WIND COND.
  • 4436Sun30%
  • 4533Mon30%50%
  • 4328Tue50%
  • 4425Wed
  • 3721
daynightWeather update from Hagerstown, Washington County Regional Airport at

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Mercersburg 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°F41°F32°F2.2"
February25°F43°F34°F1.8"
March34°F55°F44°F2.3"
April44°F67°F55°F3.3"
May54°F76°F64°F3.9"
June63°F84°F73°F4.0"
July67°F88°F77°F3.3"
August65°F85°F75°F2.8"
September58°F79°F68°F3.2"
October48°F67°F57°F3.6"
November37°F55°F45°F2.1"
December30°F46°F37°F3.0"

Did you know?

  • The highest monthly average temperature in Mercersburg for July is 77 degrees.
  • The lowest monthly average temperature in Mercersburg for January is 32 degrees.
  • The most monthly precipitation in Mercersburg occurs in June with 4 inches.
  • The air quality index in Mercersburg is 27% better than the national average.
  • The pollution index in Mercersburg is 220% worse than the national average.

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Compare Mercersburg, PA Weather To Other Cities

Mercersburg 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.
IndexMercersburgPennsylvaniaNational
Air quality index364550
Pollution index16,230,7004,327,9925,066,862

Mercersburg air quality information

MeasurementTotal
Days measured351
Days with good air quality321
Days with moderate air quality30
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Mercersburg air quality information

PollutantTotal
Arsenic0.010%
Benzene0.130%
Carbon Tetrachloride0.090%
Lead0.080%
Mercury0.020%

Average monthly Mercersburg temperature with heat index

Mercersburg monthly precipitation with daily maximum

Mercersburg monthly snow depth with daily maximum

Mercersburg monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
McConnellsburg, PA1,0913628%
Chambersburg, PA20,5763628%
Marion, PA6613628%
Fort Loudon, PA9623628%
Needmore, PA1083628%
Mercersburg, PA1,4933628%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Celina, TN1,4933334%
Keshena, WI1,4934020%
Manchester, KY1,4933628%
Paxtang, PA1,493524%
Marshallville, GA1,4933824%
Mercersburg, PA1,4933628%
Source: The Mercersburg, PA 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.