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 2.2 °F on 08 October 2016
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 12 days to 02 January 2016
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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