Climatological Report (Seasonal)
Issued by NWS

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CXUS53 KLOT 011559
CLSORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1059 AM CDT WED SEP 01 2021

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2021 TO 8/31/2021...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            105   07/24/1934
 LOW              35   06/04/1945
HIGHEST           95   08/24         MM      MM       97  08/24
LOWEST            50   06/01         MM      MM       52  06/15
                                                          06/13
AVG. MAXIMUM    84.1               82.5     1.6     86.2
AVG. MINIMUM    66.5               64.1     2.4     67.1
MEAN            75.3               73.3     2.0     76.7
DAYS MAX >= 90    21               14.3     6.7       30
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       23.48   1987
 MINIMUM        3.16   1894
TOTALS         13.19              12.06    1.13     7.75
DAILY AVG.      0.15               0.13    0.02     0.09
DAYS >= .01       29               30.2    -1.2       24
DAYS >= .10       21               19.0     2.0       15
DAYS >= .50        8                7.9     0.1        4
DAYS >= 1.00       5                3.3     1.7        2
GREATEST
 24 HR. TOTAL   1.91   08/24 TO 08/24               1.55

DEGREE DAYS
HEATING TOTAL      3                 37     -34       12
 SINCE 7/1         0                  2      -2        0
COOLING TOTAL    973                802     171     1108
 SINCE 1/1      1074                872     202     1182
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.1
HIGHEST WIND SPEED/DIRECTION    39/010    DATE  08/24
HIGHEST GUST SPEED/DIRECTION    57/290    DATE  08/10

SKY COVER
AVERAGE SKY COVER           0.55


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             26     MIXED PRECIP               0
HEAVY RAIN               18     RAIN                      19
LIGHT RAIN               38     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      32     FOG W/VIS <= 1/4 MILE      0
HAZE                     15

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

$$


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