Climatological Report (Daily)
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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009
CDUS43 KLOT 182154
CLIRFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
454 PM CDT FRI SEP 18 2026
...................................
...THE ROCKFORD IL CLIMATE SUMMARY FOR SEPTEMBER 18 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 70 11:46 AM 92 1920 75 -5 88
MINIMUM 62 6:12 AM 32 1916 53 9 57
1929
AVERAGE 66 64 2 73
PRECIPITATION (IN)
TODAY T 2.53 1960 0.13 -0.13 0.00
MONTH TO DATE 1.88 2.30 -0.42 0.30
SINCE SEP 1 1.88 2.30 -0.42 0.30
SINCE JAN 1 24.11 29.09 -4.98 21.87
SNOWFALL (IN)
TODAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 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
TODAY 0 4 -4 0
MONTH TO DATE 14 38 -24 59
SINCE SEP 1 14 38 -24 59
SINCE JUL 1 14 49 -35 78
COOLING
TODAY 1 2 -1 8
MONTH TO DATE 145 68 77 59
SINCE SEP 1 145 68 77 59
SINCE JAN 1 892 807 85 916
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 6:00 AM
LOWEST 65 1:00 PM
AVERAGE 79
..........................................................
THE ROCKFORD IL CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 93 1947
1948
2021
MINIMUM TEMPERATURE (F) 52 34 1929
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:40 AM CDT SUNSET 7:01 PM CDT
SEPTEMBER 19 2026.....SUNRISE 6:41 AM CDT SUNSET 6:59 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$