Mercersburg, PA Weather - Forecast & Monthly Averages

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TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Mercersburg for July is 77.1 degrees
The lowest monthly average temperature in Mercersburg for January is 32.3 degrees
The most monthly precipitation in Mercersburg occurs in June with 4 inches
The air quality index in Mercersburg is 14% better than the national average
The pollution index in Mercersburg is 495% worse than the national average

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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.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	25°F	41°F	32°F	2.2"
February	25°F	43°F	34°F	1.8"
March	34°F	55°F	44°F	2.3"
April	44°F	67°F	55°F	3.3"
May	54°F	76°F	64°F	3.9"
June	63°F	84°F	73°F	4.0"
July	67°F	88°F	77°F	3.3"
August	65°F	85°F	75°F	2.8"
September	58°F	79°F	68°F	3.2"
October	48°F	67°F	57°F	3.6"
November	37°F	55°F	45°F	2.1"
December	30°F	46°F	37°F	3.0"

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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.
Index	Mercersburg	Pennsylvania	National
Air quality index	36	45	42
Pollution index	16,230,700	4,584,805	2,726,193

Mercersburg air quality

Measurement	Total
Days measured	341
Days with good air quality	324
Days with moderate air quality	17
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.130%
Carbon Tetrachloride	0.090%
Lead	0.080%
Mercury	0.020%

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	Population	Air Quality Index	National Avg.
Chambersburg, PA	21,017	36	28.0%
Marion, PA	1,551	36	28.0%
Fort Loudon, PA	1,168	36	28.0%
Needmore, PA	92	36	28.0%
McConnellsburg, PA	1,030	36	28.0%
Mercersburg, PA	1,673	36	28.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Cheswold, DE	1,673	42	16.0%
Plainville, KS	1,673	15	70.0%
Evart, MI	1,673	36	28.0%
Chepachet, RI	1,673	44	12.0%
Holliday, TX	1,673	26	48.0%
Mercersburg, PA	1,673	36	28.0%

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.