870
CDUS43 KLOT 172145
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
445 PM CDT SAT MAY 17 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR MAY 17 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 71 2:59 PM 94 1962 72 -1 81
MINIMUM 55 6:38 AM 36 1929 52 3 60
1973
AVERAGE 63 62 1 71
PRECIPITATION (IN)
TODAY T 3.67 2020 0.13 -0.13 0.00
MONTH TO DATE 0.60 2.25 -1.65 3.35
SINCE MAR 1 7.18 7.70 -0.52 11.83
SINCE JAN 1 8.54 10.64 -2.10 14.81
DEGREE DAYS
HEATING
TODAY 2 5 -3 0
MONTH TO DATE 94 124 -30 40
SINCE MAR 1 1071 1351 -280 985
SINCE JUL 1 5009 5674 -665 4534
COOLING
TODAY 0 2 -2 6
MONTH TO DATE 38 26 12 32
SINCE MAR 1 51 37 14 49
SINCE JAN 1 51 37 14 49
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 18.9
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 59 6:00 AM
LOWEST 39 3:00 PM
AVERAGE 49
......................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 93 1934
1962
1996
MINIMUM TEMPERATURE (F) 53 34 2002
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 5:29 AM CDT SUNSET 8:06 PM CDT
MAY 18 2025...........SUNRISE 5:28 AM CDT SUNSET 8:07 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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