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000
CXUS53 KLOT 011340
CLMORD

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

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF MAY 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              27   05/02/1875
HIGHEST           91   05/30                          91  05/12
                       05/31
LOWEST            38   05/03                          39  05/04
AVG. MAXIMUM    73.8               70.5     3.3     72.2
AVG. MINIMUM    51.0               50.6     0.4     55.2
MEAN            62.4               60.6     1.8     63.7
DAYS MAX >= 90     2                0.8     1.2        2
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.2    -0.2        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.51   2020
 MINIMUM        0.30   1992
TOTALS          0.71               4.49   -3.78     3.47
DAILY AVG.      0.02               0.14   -0.12     0.11
DAYS >= .01        8               12.5    -4.5        9
DAYS >= .10        2                8.1    -6.1        8
DAYS >= .50        0                3.0    -3.0        1
DAYS >= 1.00       0                1.1    -1.1        1
GREATEST
 24 HR. TOTAL   0.29   05/31 TO 05/31               1.31

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   2019
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       20.2               38.4   -18.2       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM                                 0.0

DEGREE DAYS
HEATING TOTAL    140                198     -58      173
 SINCE 7/1      5393               5943    -550       MM
COOLING TOTAL     68                 60       8      142
 SINCE 1/1        93                 70      23       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
HIGHEST WIND SPEED/DIRECTION    30/020    DATE  05/16
HIGHEST GUST SPEED/DIRECTION    39/310    DATE  05/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     52

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                9     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                      6

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

$$