MERCERSBURG, PENNSYLVANIA

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Elevation: 188 meters Latitude: 39 49N Longitude: 077 54W

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DAILY WEATHER AVERAGE - 18 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	18.5 ^°C	24.2 ^°C	12.9 ^°C	29 ^°C (1998)	6.7 ^°C (2013)
Dewpoint	11.2 ^°C	13.8 ^°C	7.7 ^°C	19 ^°C (2004)	0 ^°C (1997)
Humidity	65.1 ^%	87.8 ^%	40.8 ^%		28 ^% (1997)
Barometer	1019.6 ^hPa	1022.7 ^hPa	1016.6 ^hPa	1031.2 ^hPa (2011)	1002 ^hPa (2004)
Wind Speed	9.5 ^km/h	18.3 ^km/h		53.8 ^km/h (2003)
Wind Gust		49.6 ^km/h		72.3 ^km/h (2003)
Precipitation	66.04 ^mm			105.66 ^mm (2004)

Weather Element	Average
Visibility	16.3 ^km
Wind Direction	SE (134.2 °)

Total Years on Record: 20

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