Climatological Report (Daily)
Issued by NWS Chicago, IL

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517
CDUS43 KLOT 310633
CLIRFD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT SUN AUG 31 2025

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR AUGUST 30 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         74   1:39 PM  99    1953  80     -6       80
  MINIMUM         55   2:26 AM  35    1915  59     -4       60
  AVERAGE         65                        70     -5       70

PRECIPITATION (IN)
  YESTERDAY        0.00          0.94 1956   0.14  -0.14     0.82
  MONTH TO DATE    3.30                      4.04  -0.74     2.22
  SINCE JUN 1     13.17                     13.08   0.09    14.48
  SINCE JAN 1     21.57                     26.64  -5.07    29.48

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                         1     -1        0
  MONTH TO DATE   17                         2     15        7
  SINCE JUN 1     26                        32     -6       15
  SINCE JUL 1     17                         5     12        9

 COOLING
  YESTERDAY        0                         6     -6        5
  MONTH TO DATE  201                       216    -15      230
  SINCE JUN 1    819                       672    147      762
  SINCE JAN 1    857                       733    124      830
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED     9   HIGHEST WIND DIRECTION     E (80)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     E (80)
  AVERAGE WIND SPEED     3.5


SKY COVER
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           5:00 AM
 LOWEST     61          11:00 AM
 AVERAGE    77

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   80       101      1953
 MINIMUM TEMPERATURE (F)   59        41      1915


SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE   6:21 AM CDT   SUNSET   7:31 PM CDT
SEPTEMBER  1 2025.....SUNRISE   6:22 AM CDT   SUNSET   7:30 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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