Climatological Report (Seasonal)
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CXUS53 KLOT 011956
CLSORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
256 PM CDT TUE JUN 01 2021

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
3/1/2021 TO 5/31/2021...

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             98   05/31/1934
 LOW             -12   03/04/1873
HIGHEST           90   05/24         MM      MM       90  05/24
LOWEST            22   03/02         MM      MM       25  03/07
AVG. MAXIMUM    61.4               58.8     2.6     59.3
AVG. MINIMUM    42.8               40.6     2.2     41.4
MEAN            52.1               49.7     2.4     50.3
DAYS MAX >= 90     1                0.8     0.2        1
DAYS MAX <= 32     0                3.1    -3.1        0
DAYS MIN <= 32    15               26.1   -11.1       15
DAYS MIN <= 0      0                0.2    -0.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       17.51   1983
 MINIMUM        2.73   1887
TOTALS          3.75              10.69   -6.94    16.80
DAILY AVG.      0.04               0.12   -0.08     0.18
DAYS >= .01       24               35.6   -11.6       40
DAYS >= .10       11               20.7    -9.7       25
DAYS >= .50        2                6.9    -4.9        8
DAYS >= 1.00       0                2.3    -2.3        4
GREATEST
 24 HR. TOTAL   0.74   05/26 TO 05/26               3.53

SNOWFALL (INCHES)
RECORDS
 TOTAL          29.7   1926
TOTALS           1.8                6.8    -5.0      7.9
SINCE 7/1       48.8               38.4    10.4       MM
DAYS >= TRACE      3                5.0    -2.0       11
DAYS >= 1.0        1                1.9    -0.9        4
GREATEST
 SNOW DEPTH        1   03/16                           3  03/23
 24 HR TOTAL     1.8   03/15 TO 03/15                3.0

DEGREE DAYS
HEATING TOTAL   1262               1474    -212     1393
 SINCE 7/1      5602               5943    -341       MM
COOLING TOTAL    101                 70      31       74
 SINCE 1/1       101                 70      31       74
................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    39/020    DATE  03/18
HIGHEST GUST SPEED/DIRECTION    57/310    DATE  04/29

SKY COVER
AVERAGE SKY COVER           0.61


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                      12
LIGHT RAIN               35     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                3     SLEET                      1
FOG                      25     FOG W/VIS <= 1/4 MILE      2
HAZE                     11

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

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