810
CDUS43 KLOT 202157
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
457 PM CDT TUE MAY 20 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 20 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 56 2:59 PM 95 1977 72 -16 86
MINIMUM 48 7:21 AM 33 2002 52 -4 61
AVERAGE 52 62 -10 74
PRECIPITATION (IN)
TODAY 0.45 2.54 1975 0.15 0.30 T
MONTH TO DATE 0.78 2.96 -2.18 3.05
SINCE MAR 1 6.43 9.16 -2.73 10.11
SINCE JAN 1 8.93 13.12 -4.19 14.26
SNOWFALL (IN)
TODAY 0.0 0.0 MM 0.0 0.0 0.0
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 13 5 8 0
MONTH TO DATE 147 152 -5 54
SINCE MAR 1 1205 1428 -223 1067
SINCE JUL 1 5340 5897 -557 4755
COOLING
TODAY 0 2 -2 9
MONTH TO DATE 26 28 -2 41
SINCE MAR 1 34 38 -4 50
SINCE JAN 1 34 38 -4 50
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 14.8
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 2:00 PM
LOWEST 69 2:00 AM
AVERAGE 81
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 92 1934
1977
MINIMUM TEMPERATURE (F) 52 31 2002
SUNRISE AND SUNSET
MAY 20 2025...........SUNRISE 5:26 AM CDT SUNSET 8:11 PM CDT
MAY 21 2025...........SUNRISE 5:25 AM CDT SUNSET 8:12 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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