Climatological Report (Monthly)
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
960 CXUS53 KLOT 011758 CLMRFD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 1158 AM CST MON JAN 01 2024 ................................... ...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1905 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 69 12/15/2021 12/03/2012 LOW -24 12/24/1983 HIGHEST 57 12/08 61 12/29 12/25 LOWEST 12 12/19 -10 12/22 12/23 AVG. MAXIMUM 42.3 34.3 8.0 34.5 AVG. MINIMUM 30.4 20.2 10.2 18.1 MEAN 36.3 27.3 9.0 26.3 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 1 12.0 -11.0 12 DAYS MIN <= 32 16 27.3 -11.3 24 DAYS MIN <= 0 0 2.4 -2.4 5 PRECIPITATION (INCHES) RECORD MAXIMUM 5.04 1971 MINIMUM 0.17 1907 TOTALS 3.13 1.93 1.20 2.56 DAILY AVG. 0.10 0.06 0.04 0.08 DAYS >= .01 12 9.8 2.2 8 DAYS >= .10 8 4.6 3.4 3 DAYS >= .50 2 1.2 0.8 2 DAYS >= 1.00 0 0.3 -0.3 1 GREATEST 24 HR. TOTAL 0.73 12/08 TO 12/09 1.73 SNOWFALL (INCHES) RECORDS TOTAL 30.1 2000 TOTALS 2.8 9.4 -6.6 3.3 SINCE 7/1 4.3 11.9 -7.6 MM SNOWDEPTH AVG. 0 1 DAYS >= 1.0 1 3.0 -2.0 1 GREATEST SNOW DEPTH 1 12/05 2 12/26 12/27 12/28 24 HR TOTAL 2.8 1.5 DEGREE DAYS HEATING TOTAL 883 1170 -287 1196 SINCE 7/1 2100 2486 -386 MM COOLING TOTAL 0 0 0 0 SINCE 1/1 805 839 -34 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.8 HIGHEST WIND SPEED/DIRECTION 33/310 DATE 12/18 HIGHEST GUST SPEED/DIRECTION 48/320 DATE 12/18 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.77 NUMBER OF DAYS FAIR 4 NUMBER OF DAYS PC 7 NUMBER OF DAYS CLOUDY 20 AVERAGE RH (PERCENT) 79 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 4 LIGHT RAIN 15 FREEZING RAIN 0 LT FREEZING RAIN 3 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 12 SLEET 1 FOG 19 FOG W/VIS <= 1/4 MILE 2 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$