Climatological Report (Annual)
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
215 CXUS53 KLOT 021750 CLARFD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 1150 AM CST SAT JAN 02 2021 ................................... ...THE ROCKFORD IL CLIMATE SUMMARY FOR THE YEAR OF 2020... CLIMATE NORMAL PERIOD: 1981 TO 2010 CLIMATE RECORD PERIOD: 1905 TO 2021 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 112 07/14/1936 LOW -31 01/31/2019 HIGHEST 95 08/27 MM MM 97 07/20 08/25 08/24 07/26 LOWEST -10 02/14 MM MM -31 01/31 AVG. MAXIMUM 61.2 59.3 1.9 57.8 AVG. MINIMUM 41.6 39.2 2.4 39.5 MEAN 51.4 49.2 2.2 48.7 DAYS MAX >= 90 23 14.9 8.1 17 DAYS MAX <= 32 23 46.1 -23.1 60 DAYS MIN <= 32 124 133.5 -9.5 145 DAYS MIN <= 0 2 11.6 -9.6 13 PRECIPITATION (INCHES) RECORD MAXIMUM 56.48 1973 MINIMUM 22.87 1910 TOTALS 34.61 36.24 -1.63 49.42 DAILY AVG. 0.09 0.10 -0.01 0.14 DAYS >= .01 111 119.2 -8.2 149 DAYS >= .10 66 67.3 -1.3 97 DAYS >= .50 24 23.0 1.0 37 DAYS >= 1.00 8 8.2 -0.2 13 GREATEST 24 HR. TOTAL 2.06 09/08 TO 09/08 2.92 SNOWFALL (INCHES) RECORDS TOTAL 84.3 2008 24 HR TOTAL MM SNOW DEPTH 27 01/16/1979 TOTALS 32.2 36.7 -4.5 52.4 SINCE 7/1 9.1 13.1 -4.0 11.2 SNOWDEPTH AVG. 0 1 DAYS >= TRACE 61 MM MM 67 DAYS >= 1.0 11 11.0 0.0 18 GREATEST SNOW DEPTH 7 01/25 17 24 HR TOTAL 5.7 12/29 TO 12/29 6.3 DEGREE DAYS HEATING TOTAL 5909 6569 -660 6752 SINCE 7/1 2189 2561 -372 MM COOLING TOTAL 1042 820 222 927 SINCE 1/1 1042 820 222 927 FREEZE DATES RECORD EARLIEST 09/13/1975 LATEST 05/27/1992 EARLIEST 10/16 LATEST 05/09 ................................................................ WIND (MPH) AVERAGE WIND SPEED 8.6 HIGHEST WIND SPEED/DIRECTION 38/220 DATE 11/10 38/270 08/10 38/270 04/20 HIGHEST GUST SPEED/DIRECTION 57/260 DATE 04/20 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.59 NUMBER OF DAYS FAIR 79 NUMBER OF DAYS PC 145 NUMBER OF DAYS CLOUDY 142 AVERAGE RH (PERCENT) 67 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 42 MIXED PRECIP 0 HEAVY RAIN 15 RAIN 32 LIGHT RAIN 130 FREEZING RAIN 1 LT FREEZING RAIN 13 HAIL 2 HEAVY SNOW 0 SNOW 15 LIGHT SNOW 60 SLEET 8 FOG 140 FOG W/VIS <= 1/4 MILE 8 HAZE 56 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$