Climatological Report (Daily)
Issued by NWS Chicago, IL

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521
CDUS43 KLOT 100643
CLIRFD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
143 AM CDT MON AUG 10 2026

...................................

...THE ROCKFORD IL CLIMATE SUMMARY FOR AUGUST 9 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         83  10:55 AM 100    1934  83      0       90
                                      1936
  MINIMUM         59   3:47 AM  43    1927  63     -4       73
  AVERAGE         71                        73     -2       82

PRECIPITATION (IN)
  YESTERDAY        0.12          2.52 2021   0.13  -0.01      T
  MONTH TO DATE    0.58                      1.16  -0.58      T
  SINCE JUN 1      9.47                     10.20  -0.73     9.87
  SINCE JAN 1     20.45                     23.76  -3.31    18.27

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        0
  SINCE JUN 1     12                        30    -18        9
  SINCE JUL 1      0                         3     -3        0

 COOLING
  YESTERDAY        6                         8     -2       17
  MONTH TO DATE   60                        72    -12       73
  SINCE JUN 1    523                       528     -5      691
  SINCE JAN 1    591                       589      2      729
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED     5.1


SKY COVER
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           3:00 AM
 LOWEST     65           1:00 PM
 AVERAGE    83

..........................................................


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83        98      1913
                                             1944
 MINIMUM TEMPERATURE (F)   63        48      1917


SUNRISE AND SUNSET
AUGUST 10 2026........SUNRISE   5:59 AM CDT   SUNSET   8:04 PM CDT
AUGUST 11 2026........SUNRISE   6:00 AM CDT   SUNSET   8:03 PM CDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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