Climatological Report (Daily)
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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CDUS43 KLOT 210634
CLIRFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT MON SEP 21 2026
...................................
...THE ROCKFORD IL CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
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)
YESTERDAY
MAXIMUM 68 12:35 AM 92 1895 74 -6 77
1920
MINIMUM 60 10:12 PM 30 1956 52 8 62
AVERAGE 64 63 1 70
PRECIPITATION (IN)
YESTERDAY 1.63 2.40 2001 0.12 1.51 0.01
MONTH TO DATE 6.14 2.54 3.60 0.31
SINCE SEP 1 6.14 2.54 3.60 0.31
SINCE JAN 1 28.37 29.33 -0.96 21.88
SNOWFALL (IN)
YESTERDAY 0.0 T 1934 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
YESTERDAY 1 4 -3 0
MONTH TO DATE 15 46 -31 59
SINCE SEP 1 15 46 -31 59
SINCE JUL 1 15 57 -42 78
COOLING
YESTERDAY 0 2 -2 5
MONTH TO DATE 146 72 74 70
SINCE SEP 1 146 72 74 70
SINCE JAN 1 893 811 82 927
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 8.3
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1:00 AM
LOWEST 87 6:00 PM
AVERAGE 94
..........................................................
THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 94 1920
MINIMUM TEMPERATURE (F) 51 34 1995
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 6:43 AM CDT SUNSET 6:55 PM CDT
SEPTEMBER 22 2026.....SUNRISE 6:44 AM CDT SUNSET 6:54 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$