Climatological Report (Seasonal)
Issued by NWS

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CXUS53 KLOT 021118 CCA
CLSORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1056 AM CDT THU JUN 01 2023

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
3/1/2023 TO 5/31/2023...

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             98   05/31/1934
 LOW             -12   03/04/1873
HIGHEST           91   05/30                          91  05/12
                       05/31
LOWEST            12   03/18                          11  03/12
AVG. MAXIMUM    60.7               58.8     1.9     58.8
AVG. MINIMUM    41.3               40.6     0.7     42.2
MEAN            51.0               49.7     1.3     50.5
DAYS MAX >= 90     2                0.8     1.2        2
DAYS MAX <= 32     1                3.1    -2.1        3
DAYS MIN <= 32    20               26.1    -6.1       18
DAYS MIN <= 0      0                0.2    -0.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       17.51   1983
 MINIMUM        2.73   1887
TOTALS          6.53              10.69   -4.16    12.47
DAILY AVG.      0.07               0.12   -0.05     0.14
DAYS >= .01       38               35.6     2.4       39
DAYS >= .10       20               20.7    -0.7       26
DAYS >= .50        3                6.9    -3.9        6
DAYS >= 1.00       1                2.3    -1.3        3
GREATEST
 24 HR. TOTAL   1.19                                1.57

SNOWFALL (INCHES)
RECORDS
 TOTAL          29.7   1926
TOTALS           2.3                6.8    -4.5      4.2
SINCE 7/1       20.2               38.4   -18.2     32.8
DAYS >= 1.0        0                1.9    -1.9        1
GREATEST
 SNOW DEPTH        1   03/10                           1  03/07
                                                          03/08
                                                          03/11
 24 HR TOTAL     1.2                                 2.9

DEGREE DAYS
HEATING TOTAL   1358               1474    -116     1453
 SINCE 7/1      5393               5943    -550     5670
COOLING TOTAL     93                 70      23      145
 SINCE 1/1        93                 70      23      145
................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    36/260    DATE  03/31
HIGHEST GUST SPEED/DIRECTION    52/260    DATE  03/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.65
NUMBER OF DAYS FAIR           13
NUMBER OF DAYS PC             44
NUMBER OF DAYS CLOUDY         35

AVERAGE RH (PERCENT)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             10     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                      11
LIGHT RAIN               37     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       4
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW               13     SLEET                      3
FOG                      30     FOG W/VIS <= 1/4 MILE      1
HAZE                     16

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

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