393
CDUS43 KLOT 210633
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT FRI AUG 21 2026
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 20 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 78 1:46 PM 98 1947 82 -4 76
MINIMUM 62 5:22 AM 47 1950 65 -3 66
AVERAGE 70 74 -4 71
PRECIPITATION (IN)
YESTERDAY 0.00 1.47 1951 0.14 -0.14 0.00
MONTH TO DATE 4.23 2.80 1.43 4.68
SINCE JUN 1 14.59 10.61 3.98 12.60
SINCE JAN 1 30.18 25.26 4.92 22.10
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 11 33 -22 13
SINCE JUL 1 0 2 -2 0
COOLING
YESTERDAY 5 9 -4 6
MONTH TO DATE 201 192 9 239
SINCE JUN 1 756 717 39 928
SINCE JAN 1 834 787 47 962
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 7.5
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 4:00 AM
LOWEST 47 11:00 AM
AVERAGE 64
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 99 1955
MINIMUM TEMPERATURE (F) 65 46 1950
SUNRISE AND SUNSET
AUGUST 21 2026........SUNRISE 6:06 AM CDT SUNSET 7:43 PM CDT
AUGUST 22 2026........SUNRISE 6:07 AM CDT SUNSET 7:41 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page