427
CDUS43 KLOT 200634
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT TUE MAY 20 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 19 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 55 10:21 PM 94 1975 72 -17 76
1977
MINIMUM 43 7:16 AM 36 1894 52 -9 62
1993
AVERAGE 49 62 -13 69
PRECIPITATION (IN)
YESTERDAY 0.00 1.53 1949 0.15 -0.15 0.00
MONTH TO DATE 0.33 2.81 -2.48 3.05
SINCE MAR 1 5.98 9.01 -3.03 10.11
SINCE JAN 1 8.48 12.97 -4.49 14.26
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 16 6 10 0
MONTH TO DATE 134 147 -13 54
SINCE MAR 1 1192 1423 -231 1067
SINCE JUL 1 5327 5892 -565 4755
COOLING
YESTERDAY 0 2 -2 4
MONTH TO DATE 26 26 0 32
SINCE MAR 1 34 36 -2 41
SINCE JAN 1 34 36 -2 41
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WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 15.1
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 5:00 AM
LOWEST 63 2:00 PM
AVERAGE 73
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 95 1977
MINIMUM TEMPERATURE (F) 52 33 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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