Riverdale weather

 Latitude N 38° 57' 31"    Longitude W 76° 56' 09"    Elevation 122 ft

Records began on 10 December 2010. Here are the extremes recorded since then.

Records Since 10 December 2010
Temperature and Humidity
Highest Temperature 104.2 °F at 3:30 PM on 22 July 2011
Lowest Temperature 4.0 °F at 3:47 AM on 20 February 2015
Highest Dew Point 84.6 °F at 11:50 AM on 22 July 2011
Lowest Dew Point -17.7 °F at 2:40 PM on 22 January 2011
Highest Apparent Temperature 119.5 °F at 3:50 PM on 22 July 2011
Lowest Apparent Temperature -11.8 °F at 8:01 AM on 15 February 2015
Lowest Wind Chill Temperature -13.8 °F at 4:52 AM on 07 January 2014
Highest Heat Index 134.6 °F at 4:40 PM on 22 July 2011
Highest Minimum 85.1 °F at 6:10 AM on 22 July 2011
Lowest Maximum 16.4 °F at 2:53 PM on 16 February 2015
Highest Humidity 100 % at 4:22 AM on 03 October 2012
Lowest Humidity 10 % at 2:30 PM on 15 February 2011
Highest Daily Range 38.0 °F on 06 January 2014
Lowest Daily Range 2.3 °F on 05 December 2014
Rainfall
Highest Rain Rate 27.43 in/hr at 9:58 AM on 10 June 2014
Highest Hourly Rainfall 3.64 in at 10:24 AM on 10 June 2014
Highest Daily Rainfall 5.33 in on 29 October 2012
Highest Monthly Rainfall 14.42 in June 2015
Longest Dry Period 24 days to 21 December 2013
Longest Wet Period 9 days to 03 July 2013
Wind
Highest Wind Gust 68.0 mph at 5:56 PM on 20 April 2015
Highest Wind Speed Average 55.5 mph at 1:38 PM on 27 March 2011
Highest Daily Wind Run 432.1 miles on 19 February 2011
Pressure
Lowest Pressure (sl) 28.652 in at 10:44 PM on 29 October 2012
Highest Pressure (sl) 30.964 in at 10:05 AM on 28 February 2015
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