092
CXUS53 KLOT 021908 CCA
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1010 AM CDT THU MAY 01 2025

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             91   04/22/1980
                       04/30/1942
 LOW               7   04/07/1982
HIGHEST           84   04/28                          81  04/14
                                                          04/16
LOWEST            25   04/08                          32  04/06
AVG. MAXIMUM    60.0               59.0     1.0     61.6
AVG. MINIMUM    41.5               40.3     1.2     43.8
MEAN            50.8               49.7     1.1     52.7
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     2                6.0    -4.0        1
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.68   2013
 MINIMUM        0.14   1899
TOTALS          2.66               3.75   -1.09     3.47
DAILY AVG.      0.09               0.12   -0.03     0.12
DAYS >= .01       10               12.3    -2.3       14
DAYS >= .10        5                7.1    -2.1       10
DAYS >= .50        2                2.5    -0.5        1
DAYS >= 1.00       1                0.8     0.2        0
GREATEST
 24 HR. TOTAL   1.25   04/02 TO 04/02               0.82

SNOWFALL (INCHES)
RECORDS
 TOTAL          13.6   1938
TOTALS             T                1.3    -1.3        T
SINCE 7/1       17.6               38.4   -20.8       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL       T   04/07 TO 04/07                  T
                       04/09 TO 04/09

DEGREE DAYS
HEATING TOTAL    428                468     -40      371
 SINCE 7/1      5193               5745    -552       MM
COOLING TOTAL      8                  8       0        9
 SINCE 1/1         8                 10      -2       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.2
HIGHEST WIND SPEED/DIRECTION    31/030    DATE  04/07
                                31/250          04/21
HIGHEST GUST SPEED/DIRECTION    46/220    DATE  04/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      1
FOG                      14     FOG W/VIS <= 1/4 MILE      0
HAZE                      1

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

$$