572
CXUS53 KLOT 011542
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1042 AM CDT MON JUN 01 2026

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026

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              27   05/09/1983
                       05/02/1875
HIGHEST           87   05/17                          94  05/15
LOWEST            32   05/02                          37  05/09
AVG. MAXIMUM    70.5               70.5     0.0     67.7
AVG. MINIMUM    49.6               50.6    -1.0     48.4
MEAN            60.1               60.6    -0.5     58.0
DAYS MAX >= 90     0                1.0    -1.0        1
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     1                0.2     0.8        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.51   2020
 MINIMUM        0.30   1992
TOTALS          1.17               4.49   -3.32     1.35
DAILY AVG.      0.04               0.14   -0.10     0.04
DAYS >= .01        8               12.5    -4.5        6
DAYS >= .10        3                8.1    -5.1        4
DAYS >= .50        0                3.0    -3.0        1
DAYS >= 1.00       0                1.1    -1.1        0
GREATEST
 24 HR. TOTAL   0.44   05/24 TO 05/24               0.62

SNOWFALL (INCHES)
RECORDS
 TOTAL           2.2   1940
TOTALS           0.0                0.0     0.0        T
SINCE 7/1       34.1               38.4    -4.3       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                                   T

DEGREE DAYS
HEATING TOTAL    203                198       5      235
 SINCE 7/1      5558               5943    -385       MM
COOLING TOTAL     59                 60      -1       26
 SINCE 1/1        78                 70       8       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.5
HIGHEST WIND SPEED/DIRECTION    30/240    DATE  05/18
HIGHEST GUST SPEED/DIRECTION    44/190    DATE  05/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.59
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     57

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       1
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     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.

$$