Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 170638
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
138 AM CDT THU APR 17 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 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 51 MM 87 2002 59 -8 81
MINIMUM 35 5:32 AM 18 1875 40 -5 51
AVERAGE 43 50 -7 66
PRECIPITATION (IN)
YESTERDAY 0.00 1.97 1921 0.13 -0.13 0.10
MONTH TO DATE 1.50 1.81 -0.31 1.75
SINCE MAR 1 4.49 4.26 0.23 5.34
SINCE JAN 1 6.99 8.22 -1.23 9.49
SNOWFALL (IN)
YESTERDAY 0.0 5.4 1961 0.0 0.0 0.0
MONTH TO DATE T 0.9 -0.9 T
SINCE MAR 1 2.8 6.4 -3.6 1.0
SINCE JUL 1 17.6 38.0 -20.4 22.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 22 15 7 0
MONTH TO DATE 315 289 26 211
SINCE MAR 1 945 1097 -152 853
SINCE JUL 1 5080 5566 -486 4541
COOLING
YESTERDAY 0 0 0 1
MONTH TO DATE 0 0 0 3
SINCE MAR 1 0 2 -2 3
SINCE JAN 1 0 2 -2 3
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 7.3
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 72 11:00 PM
LOWEST 44 2:00 PM
AVERAGE 58
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 88 1976
MINIMUM TEMPERATURE (F) 41 17 1875
SUNRISE AND SUNSET
APRIL 17 2025.........SUNRISE 6:08 AM CDT SUNSET 7:35 PM CDT
APRIL 18 2025.........SUNRISE 6:06 AM CDT SUNSET 7:36 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$