Climatological Report (Annual)
Issued by NWS Chicago, IL

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190
CXUS53 KLOT 011831
CLARFD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1231 PM CST WED JAN 01 2025

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE YEAR OF 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2024

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           98   08/27                          97  08/23
                                                          08/24
LOWEST           -16   01/15                         -11  01/31
AVG. MAXIMUM    63.3               58.8     4.5     61.4
AVG. MINIMUM    42.4               40.0     2.4     41.2
MEAN            52.8               49.4     3.4     51.3
DAYS MAX >= 90    18               14.8     3.2       13
DAYS MAX <= 32    26               50.0   -24.0       24
DAYS MIN <= 32   112              135.8   -23.8      125
DAYS MIN <= 0      8               11.5    -3.5        4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       56.48   1973
 MINIMUM       22.87   1910
TOTALS         35.49              37.24   -1.75    32.46
DAILY AVG.      0.10               0.10   -0.00     0.09
DAYS >= .01      109              120.7   -11.7      109
DAYS >= .10       64               69.0    -5.0       67
DAYS >= .50       20               23.6    -3.6       20
DAYS >= 1.00       8                8.8    -0.8        5
GREATEST
 24 HR. TOTAL   3.68   07/13 TO 07/14               2.90

SNOWFALL (INCHES)
RECORDS
 TOTAL          84.3   2008
TOTALS          28.2               37.1    -8.9     34.2
SINCE 7/1        5.2               11.9    -6.7       MM
DAYS >= 1.0        9               11.1    -2.1        9
GREATEST
 SNOW DEPTH       10   01/13                           8  01/29
                       01/14
 24 HR TOTAL     7.0   01/12 TO 01/12                7.4

DEGREE DAYS
HEATING TOTAL   5310               6497   -1187     5691
 SINCE 7/1      2073               2486    -413       MM
COOLING TOTAL    958                838     120      805
 SINCE 1/1       958                839     119       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.9
HIGHEST WIND SPEED/DIRECTION    46/300    DATE  12/04
HIGHEST GUST SPEED/DIRECTION    56/290    DATE  02/28

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.59
NUMBER OF DAYS FAIR           95
NUMBER OF DAYS PC            137
NUMBER OF DAYS CLOUDY        134

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             48     MIXED PRECIP               1
HEAVY RAIN               22     RAIN                      41
LIGHT RAIN              132     FREEZING RAIN              0
LT FREEZING RAIN          6     HAIL                       2
HEAVY SNOW                3     SNOW                       5
LIGHT SNOW               43     SLEET                      1
FOG                     172     FOG W/VIS <= 1/4 MILE     17
HAZE                     46

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

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