Climate Data for Latitude 39.75 Longitude -77.25

 

Locations

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Catoctin Mountain Park
Gettysburg National Military Park

Averages (English) Metric

TypeUnitsJanFebMarAprMayJunJulAugSepOctNovDecPeriod
Min Temp22.422.930.939.850.158.563.361.554.643.133.925.7106 years
Mean Temp30.932.441.651.862.170.474.772.865.954.743.633.8109 years
Max Temp39.341.852.463.874.382.386.384.377.366.453.341.9109 years
FrostDays31.028.230.919.93.82.34.16.14.09.629.831.018 years
WetDays11.29.811.110.810.39.89.010.46.86.98.69.9109 years
Precipitationin3.22.73.33.23.34.13.73.83.83.33.13.2109 years
Potential Evapotranspirationin1.21.42.73.84.75.25.54.73.52.61.71.2109 years
Yearly Average Temperatures 1901 - 2009 (English) Latitude 39.75 Longitude -77.25
Monthly Mean Temperatures 1901 - 2009 (English) Latitude 39.75 Longitude -77.25
Yearly Total Frost Days 1902 - 2009 Latitude 39.75 Longitude -77.25
Yearly Total Precipitation 1901 - 2009 (English) Latitude 39.75 Longitude -77.25
Yearly Total Wet Days 1901 - 2009 Latitude 39.75 Longitude -77.25
Yearly Total Potential Evapotranspiration 1901 - 2009 (English) Latitude 39.75 Longitude -77.25

Climate data provided by CRU TS 3.1 - University of East Anglia Climate Research Unit (CRU). [Phil Jones, Ian Harris]. CRU Time Series (TS) high resolution gridded datasets, [Internet]. NCAS British Atmospheric Data Centre, 2008, Accessed: 28-July-2011
Charting software provided by pChart - a PHP class to build charts.
The calculation method for the potential evapotranspiration is the FAO grass reference equation (Ekstrom et al., 2007, which is based on Allen et al., 1994). It is a variant of the Penman Monteith method using TMP, TMN, TMX, VAP, CLD.