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000
CXUS53 KLOT 271254
CLMMDW

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
820 AM CDT SUN OCT 01 2023

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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            102   09/15/1939
 LOW              29   09/28/1942
HIGHEST           93   09/03                          94  09/20
                       09/04
LOWEST            51   09/14                          46  09/29
AVG. MAXIMUM    76.8               76.3     0.5     78.3
AVG. MINIMUM    60.8               58.8     2.0     61.8
MEAN            68.8               67.5     1.3     70.1
DAYS MAX >= 90     3                2.2     0.8        3
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       14.17   1961
 MINIMUM        0.01   1979
TOTALS          3.60               2.77    0.83     2.06
DAILY AVG.      0.12               0.09    0.03     0.07
DAYS >= .01       12                8.9     3.1        8
DAYS >= .10        5                5.4    -0.4        3
DAYS >= .50        3                1.7     1.3        1
DAYS >= 1.00       2                0.5     1.5        1
GREATEST
 24 HR. TOTAL   1.30   09/11 TO 09/11               1.40

DEGREE DAYS
HEATING TOTAL     15                 59     -44       54
 SINCE 7/1        16                 63     -47       MM
COOLING TOTAL    137                136       1      214
 SINCE 1/1      1099               1092       7       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.6
HIGHEST WIND SPEED/DIRECTION    23/250    DATE  09/06
HIGHEST GUST SPEED/DIRECTION    36/180    DATE  09/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.61
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      1
HAZE                      4

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

$$