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Climatological Report (Annual)
Issued by NWS Chicago, IL

000
CXUS53 KLOT 012009
CLARFD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
209 PM CST SAT JAN 01 2022

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE YEAR OF 2021...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2021

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           99   06/11         MM      MM       95  07/26
                                                          08/24
                                                          08/25
LOWEST           -12   02/17         MM      MM      -10  02/14
AVG. MAXIMUM    62.1               58.8     3.3     61.2
AVG. MINIMUM    41.9               40.0     1.9     41.5
MEAN            52.0               49.4     2.6     51.4
DAYS MAX >= 90    35               14.8    20.2       23
DAYS MAX <= 32    35               50.0   -15.0       23
DAYS MIN <= 32   125              135.8   -10.8      124
DAYS MIN <= 0     13               11.5     1.5        2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       56.48   1973
 MINIMUM       22.87   1910
TOTALS         24.19              37.24  -13.05    34.61
DAILY AVG.      0.07               0.10   -0.03     0.09
DAYS >= .01      113              120.7    -7.7      111
DAYS >= .10       60               69.0    -9.0       66
DAYS >= .50       15               23.6    -8.6       24
DAYS >= 1.00       2                8.8    -6.8        8
GREATEST
 24 HR. TOTAL   2.52   08/09 TO 08/09               2.06

SNOWFALL (INCHES)
RECORDS
 TOTAL          84.3   2008
 SNOW DEPTH       27   01/16/1979
TOTALS          30.2               37.1    -6.9     32.2
SINCE 7/1        2.8               11.9    -9.1      9.1
DAYS >= TRACE     55                 MM      MM       61
DAYS >= 1.0       13               11.1     1.9       11
GREATEST
 SNOW DEPTH       17   02/16                           7
 24 HR TOTAL     5.5   01/30 TO 01/30                5.7

DEGREE DAYS
HEATING TOTAL   5824               6497    -673     5909
 SINCE 7/1      1989               2486    -497     2189
COOLING TOTAL   1252                838     414     1042
 SINCE 1/1      1252                839     413     1042

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

WIND (MPH)
AVERAGE WIND SPEED              8.1
HIGHEST WIND SPEED/DIRECTION    45/220    DATE  12/16
HIGHEST GUST SPEED/DIRECTION    63/190    DATE  12/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.61
NUMBER OF DAYS FAIR           83
NUMBER OF DAYS PC            136
NUMBER OF DAYS CLOUDY        146

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             39     MIXED PRECIP               0
HEAVY RAIN               22     RAIN                      36
LIGHT RAIN              138     FREEZING RAIN              0
LT FREEZING RAIN         10     HAIL                       2
HEAVY SNOW                1     SNOW                       5
LIGHT SNOW               52     SLEET                      6
FOG                     136     FOG W/VIS <= 1/4 MILE      9
HAZE                     84

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

$$