Climatological Report (Daily)
Issued by NWS
Issued by NWS
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664
CDUS43 KLOT 180636
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT FRI APR 18 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR APRIL 17 2025...
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)
YESTERDAY
MAXIMUM 66 1:53 PM 88 1976 61 5 70
MINIMUM 42 1:05 AM 29 1944 42 0 54
1983
AVERAGE 54 51 3 62
PRECIPITATION (IN)
YESTERDAY 0.06 1.87 2013 0.13 -0.07 0.02
MONTH TO DATE 2.10 1.78 0.32 1.47
SINCE MAR 1 5.49 3.66 1.83 5.47
SINCE JAN 1 6.85 6.60 0.25 8.45
DEGREE DAYS
HEATING
YESTERDAY 11 14 -3 3
MONTH TO DATE 302 288 14 200
SINCE MAR 1 891 1076 -185 802
SINCE JUL 1 4829 5399 -570 4351
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 7
SINCE MAR 1 0 2 -2 7
SINCE JAN 1 0 2 -2 7
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 15.1
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 4:00 PM
LOWEST 28 1:00 PM
AVERAGE 54
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 89 2002
MINIMUM TEMPERATURE (F) 42 25 1983
SUNRISE AND SUNSET
APRIL 18 2025.........SUNRISE 6:06 AM CDT SUNSET 7:36 PM CDT
APRIL 19 2025.........SUNRISE 6:04 AM CDT SUNSET 7:37 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$