Climate Data for Latitude 39.75 Longitude 77.25

Köppen climate classification: BWk (Climate: arid; Precipitation: desert; Temperature: cold arid)
 

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Averages (English) Metric

TypeUnitsJanFebMarAprMayJunJulAugSepOctNovDecPeriod
Min TempF°8.016.531.645.153.859.563.561.452.238.724.912.2107 years
Mean TempF°18.927.642.957.666.472.476.173.965.252.336.422.1109 years
Max TempF°29.638.454.270.279.085.488.886.578.265.947.932.1106 years
FrostDays31.028.231.017.34.18.65.23.68.628.130.031.072 years
WetDays1.22.62.72.24.94.33.82.91.91.31.20.7109 years
Precipitationin0.10.20.20.40.60.70.70.50.30.20.10.0109 years
Potential Evapotranspirationin0.51.02.54.35.86.66.85.84.12.61.10.4109 years
Yearly Average Temperatures 2010 - 2009 (English) Latitude 39.75 Longitude 77.25
Monthly Mean Temperatures 1901 - 2009 (English) Latitude 39.75 Longitude 77.25
Yearly Total Frost Days 1901 - 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.
Köppen climate classification provided by Kottek, M., J. Grieser, C. Beck, B. Rudolf, and F. Rubel, 2006: World Map of Köppen-Geiger Climate Classification updated. Meteorol. Z., 15, 259-263
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.