Climatological Report (Daily)
Issued by NWS
Issued by NWS
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059
CDUS43 KLOT 170647
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
147 AM CDT SAT MAY 17 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 16 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 88 3:30 PM 94 1962 71 17 75
MINIMUM 60 MM 33 1997 51 9 52
AVERAGE 74 61 13 64
PRECIPITATION (IN)
YESTERDAY T 1.38 1974 0.15 -0.15 0.48
MONTH TO DATE 0.33 2.37 -2.04 3.05
SINCE MAR 1 5.98 8.57 -2.59 10.11
SINCE JAN 1 8.48 12.53 -4.05 14.26
SNOWFALL (IN)
YESTERDAY 0.0 T 2019 0.0 0.0 0.0
MONTH TO DATE 0.0 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 MM
DEGREE DAYS
HEATING
YESTERDAY 0 6 -6 1
MONTH TO DATE 106 129 -23 54
SINCE MAR 1 1164 1405 -241 1067
SINCE JUL 1 5299 5874 -575 4755
COOLING
YESTERDAY 9 2 7 0
MONTH TO DATE 26 20 6 16
SINCE MAR 1 34 30 4 25
SINCE JAN 1 34 30 4 25
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 15.9
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
SANDSTORM
RELATIVE HUMIDITY (PERCENT)
HIGHEST 60 3:00 AM
LOWEST 20 5:00 PM
AVERAGE 40
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 94 1962
MINIMUM TEMPERATURE (F) 51 36 1973
2002
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 5:29 AM CDT SUNSET 8:08 PM CDT
MAY 18 2025...........SUNRISE 5:28 AM CDT SUNSET 8:09 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$