193
CXUS53 KLOT 011541
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1041 AM CDT WED NOV 01 2023

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             94   10/06/1963
 LOW              14   10/25/1887
HIGHEST           87   10/01                          79  10/22
                       10/03
                                                          10/23
LOWEST            30   10/31                          33  10/19
                                                          10/20
AVG. MAXIMUM    64.7               62.7     2.0     63.9
AVG. MINIMUM    49.4               45.4     4.0     44.2
MEAN            57.1               54.0     3.1     54.0
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     2                2.7    -0.7        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       12.06   1954
 MINIMUM        0.18   1897
TOTALS          2.28               3.43   -1.15     1.66
DAILY AVG.      0.07               0.11   -0.04     0.05
DAYS >= .01       16               10.5     5.5        8
DAYS >= .10        8                6.3     1.7        3
DAYS >= .50        2                2.3    -0.3        1
DAYS >= 1.00       0                0.7    -0.7        0
GREATEST
 24 HR. TOTAL   1.00   10/13 TO 10/14               0.75

SNOWFALL (INCHES)
RECORDS
 TOTAL           6.3   1989
TOTALS           0.9                0.2     0.7        T
SINCE 7/1        0.9                0.2     0.7       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.1    -0.1        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL     0.9                                  MM

DEGREE DAYS
HEATING TOTAL    293                355     -62      345
 SINCE 7/1       308                440    -132       MM
COOLING TOTAL     56                 15      41       14
 SINCE 1/1      1145               1003     142       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.4
HIGHEST WIND SPEED/DIRECTION    26/030    DATE  10/14
HIGHEST GUST SPEED/DIRECTION    40/030    DATE  10/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.65
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       7
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                1     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

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

$$