Climatological Report (Daily)
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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CDUS43 KLOT 180637
CLIRFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
137 AM CDT MON AUG 18 2025
...................................
...THE ROCKFORD IL CLIMATE SUMMARY FOR AUGUST 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 85 2:47 PM 102 1988 82 3 81
MINIMUM 69 11:59 PM 46 1924 62 7 68
AVERAGE 77 72 5 75
PRECIPITATION (IN)
YESTERDAY 0.02 2.03 1979 0.14 -0.12 T
MONTH TO DATE 2.31 2.27 0.04 1.18
SINCE JUN 1 12.18 11.31 0.87 13.44
SINCE JAN 1 20.58 24.87 -4.29 28.44
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 2
SINCE JUN 1 9 30 -21 10
SINCE JUL 1 0 3 -3 4
COOLING
YESTERDAY 12 7 5 10
MONTH TO DATE 158 133 25 127
SINCE JUN 1 776 589 187 659
SINCE JAN 1 814 650 164 727
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 5.1
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 12:00 AM
LOWEST 70 3:00 PM
AVERAGE 84
..........................................................
THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 101 1936
MINIMUM TEMPERATURE (F) 62 45 1963
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:07 AM CDT SUNSET 7:52 PM CDT
AUGUST 19 2025........SUNRISE 6:08 AM CDT SUNSET 7:51 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$