871
CXUS53 KLOT 011705
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1205 PM CDT FRI NOV 01 2024

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2024

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           85   10/05                          87  10/01
                                                          10/03
LOWEST            37   10/16                          30  10/31
                       10/27
AVG. MAXIMUM    70.1               62.7     7.4     64.7
AVG. MINIMUM    49.3               45.4     3.9     49.4
MEAN            59.7               54.0     5.7     57.1
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                2.7    -2.7        2
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       12.06   1954
 MINIMUM        0.18   1897
TOTALS          1.18               3.43   -2.25     2.28
DAILY AVG.      0.04               0.11   -0.07     0.07
DAYS >= .01        7               10.5    -3.5       16
DAYS >= .10        3                6.3    -3.3        8
DAYS >= .50        1                2.3    -1.3        2
DAYS >= 1.00       0                0.7    -0.7        0
GREATEST
 24 HR. TOTAL   0.84   10/24 TO 10/25               1.00

SNOWFALL (INCHES)
RECORDS
 TOTAL           6.3   1989
TOTALS           0.0                0.2    -0.2      0.9
SINCE 7/1        0.0                0.2    -0.2       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL     0.0                                 0.9

DEGREE DAYS
HEATING TOTAL    194                355    -161      293
 SINCE 7/1       209                440    -231       MM
COOLING TOTAL     35                 15      20       56
 SINCE 1/1      1211               1003     208       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
HIGHEST WIND SPEED/DIRECTION    32/300    DATE  10/13
                                32/250          10/31
HIGHEST GUST SPEED/DIRECTION    50/200    DATE  10/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       2
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       4     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

$$