982
CXUS53 KLOT 011008
CLMORD

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

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

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

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            101   09/02/1953
                       09/01/1953
 LOW              29   09/23/1995
                       09/30/1984
                       09/28/1942
HIGHEST           96   09/02                          89  09/19
                                                          09/29
LOWEST            49   09/27                          47  09/07
AVG. MAXIMUM    77.3               75.5     1.8     78.9
AVG. MINIMUM    63.0               57.1     5.9     59.7
MEAN            70.1               66.3     3.8     69.3
DAYS MAX >= 90     4                2.0     2.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.1    -0.1        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       14.17   1961
 MINIMUM        0.01   1979
TOTALS          3.70               3.19    0.51     0.49
DAILY AVG.      0.12               0.11    0.01     0.02
DAYS >= .01        8                8.5    -0.5        5
DAYS >= .10        4                5.6    -1.6        2
DAYS >= .50        4                1.9     2.1        0
DAYS >= 1.00       1                0.8     0.2        0
GREATEST
 24 HR. TOTAL   1.53   09/19 TO 09/20               0.27

DEGREE DAYS
HEATING TOTAL     27                 77     -50       32
 SINCE 7/1        27                 82     -55       MM
COOLING TOTAL    187                116      71      166
 SINCE 1/1      1113                988     125       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.1
HIGHEST WIND SPEED/DIRECTION    24/030    DATE  09/20
HIGHEST GUST SPEED/DIRECTION    32/180    DATE  09/15
                                32/030          09/20
                                32/060          09/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.67
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       5
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                      3

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

$$