Climatological Report (Annual)
Issued by NWS Chicago, IL

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972
CXUS53 KLOT 040100 CCA
CLARFD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
410 PM CST MON JAN 01 2024

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE YEAR OF 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            112   07/14/1936
 LOW             -31   01/31/2019
HIGHEST           97   08/23                         100  06/21
                       08/24
LOWEST           -11   01/31                         -18  01/26
AVG. MAXIMUM    61.4               58.8     2.6     59.5
AVG. MINIMUM    41.2               40.0     1.2     38.9
MEAN            51.3               49.4     1.9     49.2
DAYS MAX >= 90    13               14.8    -1.8       20
DAYS MAX <= 32    24               50.0   -26.0       55
DAYS MIN <= 32   125              135.8   -10.8      140
DAYS MIN <= 0      4               11.5    -7.5       11

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       56.48   1973
 MINIMUM       22.87   1910
TOTALS         32.46              37.24   -4.78    39.47
DAILY AVG.      0.09               0.10   -0.01     0.11
DAYS >= .01      109              120.7   -11.7      116
DAYS >= .10       67               69.0    -2.0       59
DAYS >= .50       20               23.6    -3.6       22
DAYS >= 1.00       5                8.8    -3.8        8
GREATEST
 24 HR. TOTAL   2.90   10/13 TO 10/14               4.46

SNOWFALL (INCHES)
RECORDS
 TOTAL          84.3   2008
TOTALS          34.2               37.1    -2.9     24.7
SINCE 7/1        4.3               11.9    -7.6      5.6
DAYS >= 1.0        9               11.1    -2.1       10
GREATEST
 SNOW DEPTH        8   01/29                           5  01/02
                                                          01/03
                                                          01/04
 24 HR TOTAL     7.4   03/09 TO 03/10                4.3

DEGREE DAYS
HEATING TOTAL   5691               6497    -806     6613
 SINCE 7/1      2100               2486    -386     2472
COOLING TOTAL    805                838     -33      978
 SINCE 1/1       805                839     -34      978
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    49/310    DATE  06/24
HIGHEST GUST SPEED/DIRECTION    64/160    DATE  06/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           83
NUMBER OF DAYS PC            148
NUMBER OF DAYS CLOUDY        134

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             36     MIXED PRECIP               1
HEAVY RAIN               20     RAIN                      37
LIGHT RAIN              131     FREEZING RAIN              0
LT FREEZING RAIN          7     HAIL                       6
HEAVY SNOW                3     SNOW                       5
LIGHT SNOW               56     SLEET                      4
FOG                     166     FOG W/VIS <= 1/4 MILE     16
HAZE                     35

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

$$