800
CDUS43 KLOT 042140
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
440 PM CDT FRI APR 04 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 4 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 49 9:49 AM 79 1921 54 -5 45
1929
MINIMUM 38 4:23 AM 16 1975 37 1 36
AVERAGE 44 46 -2 41
PRECIPITATION (IN)
TODAY 0.00 1.90 1947 0.11 -0.11 0.07
MONTH TO DATE 1.25 0.42 0.83 1.21
SINCE MAR 1 4.24 2.87 1.37 4.80
SINCE JAN 1 6.74 6.83 -0.09 8.95
SNOWFALL (IN)
TODAY 0.0 6.4 1920 0.1 -0.1 T
MONTH TO DATE 0.0 0.4 -0.4 T
SINCE MAR 1 2.8 5.9 -3.1 1.0
SINCE JUL 1 17.6 37.5 -19.9 22.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 21 20 1 24
MONTH TO DATE 73 81 -8 96
SINCE MAR 1 703 889 -186 738
SINCE JUL 1 4838 5358 -520 4426
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 2 -2 0
SINCE JAN 1 0 2 -2 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 9.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 3:00 AM
LOWEST 54 9:00 AM
AVERAGE 67
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 55 85 1988
MINIMUM TEMPERATURE (F) 37 18 1979
1995
SUNRISE AND SUNSET
APRIL 4 2025.........SUNRISE 6:29 AM CDT SUNSET 7:21 PM CDT
APRIL 5 2025.........SUNRISE 6:27 AM CDT SUNSET 7:22 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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