979
CXUS53 KLOT 011008
CLMMDW

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
508 AM CDT THU OCT 01 2026

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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2026

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           96   09/02                          90  09/19
                                                          09/29
LOWEST            49   09/27                          49  09/07
AVG. MAXIMUM    77.4               76.3     1.1     79.9
AVG. MINIMUM    63.9               58.8     5.1     61.8
MEAN            70.6               67.5     3.1     70.8
DAYS MAX >= 90     4                2.2     1.8        2
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          5.40               2.77    2.63     0.56
DAILY AVG.      0.18               0.09    0.09     0.02
DAYS >= .01        9                8.9     0.1        5
DAYS >= .10        4                5.4    -1.4        3
DAYS >= .50        4                1.7     2.3        0
DAYS >= 1.00       3                0.5     2.5        0
GREATEST
 24 HR. TOTAL   1.86   09/19 TO 09/20               0.20

DEGREE DAYS
HEATING TOTAL     27                 59     -32       21
 SINCE 7/1        27                 63     -36       MM
COOLING TOTAL    204                136      68      204
 SINCE 1/1      1175               1092      83       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.4
HIGHEST WIND SPEED/DIRECTION    29/060    DATE  09/20
HIGHEST GUST SPEED/DIRECTION    38/070    DATE  09/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.68
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       4
LIGHT RAIN               12     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      0
HAZE                      1

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

$$