Climatological Report (Monthly)
Issued by NWS Chicago, IL

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CXUS53 KLOT 020005 CCA
CLMRFD

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO IL
705 PM CDT FRI OCT 01 2021

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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            103   09/07/1939
 LOW              24   09/28/1942
HIGHEST           93   09/19         MM      MM       88  09/02
LOWEST            46   09/23         MM      MM       41  09/19
                       09/24
                       09/25
AVG. MAXIMUM    82.7               75.3     7.4     73.7
AVG. MINIMUM    55.2               53.5     1.7     52.8
MEAN            68.9               64.4     4.5     63.3
DAYS MAX >= 90     5                1.5     3.5        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.3    -0.3        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.68   1961
 MINIMUM        0.05   1979
TOTALS          0.53               3.62   -3.09     6.61
DAILY AVG.      0.02               0.12   -0.10     0.22
DAYS >= .01        7                8.4    -1.4       10
DAYS >= .10        3                5.4    -2.4        8
DAYS >= .50        0                2.3    -2.3        4
DAYS >= 1.00       0                1.0    -1.0        2
GREATEST
 24 HR. TOTAL   0.17   09/24 TO 09/24               2.06  09/08 TO 09/08

DEGREE DAYS
HEATING TOTAL     18                107     -89       98
 SINCE 7/1        18                116     -98       98
COOLING TOTAL    142                 89      53       56
 SINCE 1/1      1202                828     374     1033
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
HIGHEST WIND SPEED/DIRECTION    28/250    DATE  09/07
HIGHEST GUST SPEED/DIRECTION    46/250    DATE  09/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.42
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          4


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

$$


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