234
CDUS43 KLOT 300632
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT WED APR 30 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 29 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 77 1:24 AM 88 1899 64 13 70
1970
MINIMUM 50 11:59 PM 31 1958 45 5 54
2008
2018
AVERAGE 64 55 9 62
PRECIPITATION (IN)
YESTERDAY 0.00 2.75 1909 0.15 -0.15 0.66
MONTH TO DATE 2.66 3.60 -0.94 3.47
SINCE MAR 1 5.65 6.05 -0.40 7.06
SINCE JAN 1 8.15 10.01 -1.86 11.21
SNOWFALL (IN)
YESTERDAY 0.0 T 1909 0.0 0.0 0.0
1950
2014
MONTH TO DATE T 1.3 -1.3 T
SINCE MAR 1 2.8 6.8 -4.0 1.0
SINCE JUL 1 17.6 38.4 -20.8 22.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 1 11 -10 3
MONTH TO DATE 416 458 -42 368
SINCE MAR 1 1046 1266 -220 1010
SINCE JUL 1 5181 5735 -554 4698
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 8 0 8 9
SINCE MAR 1 8 2 6 9
SINCE JAN 1 8 2 6 9
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 14.1
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 68 11:00 PM
LOWEST 45 6:00 PM
AVERAGE 57
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 91 1942
MINIMUM TEMPERATURE (F) 45 30 1873
SUNRISE AND SUNSET
APRIL 30 2025.........SUNRISE 5:49 AM CDT SUNSET 7:50 PM CDT
MAY 1 2025...........SUNRISE 5:47 AM CDT SUNSET 7:51 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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