Quincy Dam 21 Weather Station of the U.S. Weather Service

Located in Quincy in Adams County, Illinois, Quincy Dam 21 is at an elevation of 483 feet and was established as a weather station on 01 Jan 1948.

From 1971 to 2000, the following average readings were recorded:

 - - - - - - - - - JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR Average High....... 33.7 40.0 52.1 64.8 74.7 83.8 88.0 85.8 77.9 66.3 50.9 37.9 63.0 Average Low........ 16.0 20.6 30.1 40.8 51.3 60.9 65.5 62.9 54.8 43.0 32.5 21.1 41.6 Monthly Precipitn.. 1.36 1.74 2.93 3.48 4.61 3.26 3.89 3.09 3.45 2.50 3.10 2.22 35.63 Heating Degree Days 1245 971 741 375 149 12 0 12 70 332 699 1101 5707 Cooling Degree Days 0 0 0 9 86 232 364 302 112 12 0 0 1117 

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