273
CDUS43 KLOT 182136
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
436 PM CDT SUN MAY 18 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 18 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 64 1:56 PM 93 1962 71 -7 85
MINIMUM 51 4:59 AM 34 2002 51 0 59
AVERAGE 58 61 -3 72
PRECIPITATION (IN)
TODAY 0.00 1.36 1926 0.14 -0.14 0.00
MONTH TO DATE 0.33 2.66 -2.33 3.05
SINCE MAR 1 5.98 8.86 -2.88 10.11
SINCE JAN 1 8.48 12.82 -4.34 14.26
SNOWFALL (IN)
TODAY 0.0 T 1894 0.0 0.0 0.0
1938
MONTH TO DATE T 0.0 0.0 0.0
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
TODAY 7 6 1 0
MONTH TO DATE 115 141 -26 54
SINCE MAR 1 1173 1417 -244 1067
SINCE JUL 1 5308 5886 -578 4755
COOLING
TODAY 0 2 -2 7
MONTH TO DATE 26 24 2 28
SINCE MAR 1 34 34 0 37
SINCE JAN 1 34 34 0 37
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 7.9
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 5:00 AM
LOWEST 56 11:00 AM
AVERAGE 67
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 94 1975
1977
MINIMUM TEMPERATURE (F) 52 36 1894
1993
SUNRISE AND SUNSET
MAY 18 2025...........SUNRISE 5:28 AM CDT SUNSET 8:09 PM CDT
MAY 19 2025...........SUNRISE 5:27 AM CDT SUNSET 8:10 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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