CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1247 AM CST FRI DEC 11 2020
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 10 2020...
CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1871 TO 2020
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 57 3:41 PM 62 1879 36 21 24
MINIMUM 31 5:17 AM -8 1919 22 9 14
1978
AVERAGE 44 29 15 19
PRECIPITATION (IN)
YESTERDAY 0.00 2.18 1971 0.08 -0.08 T
MONTH TO DATE T 0.88 -0.88 0.16
SINCE DEC 1 T 0.88 -0.88 0.16
SINCE JAN 1 36.67 35.52 1.15 48.15
SNOWFALL (IN)
YESTERDAY 0.0 10.9 1934 0.3 -0.3 T
MONTH TO DATE T 2.2 -2.2 0.1
SINCE DEC 1 T 2.2 -2.2 0.1
SINCE JUL 1 0.7 3.6 -2.9 8.4
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 21 36 -15 46
MONTH TO DATE 279 342 -63 312
SINCE DEC 1 279 342 -63 312
SINCE JUL 1 1278 1598 -320 1665
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1295 843 452 960
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 4.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 8:00 AM
LOWEST 45 3:00 PM
AVERAGE 65
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 36 61 1949
MINIMUM TEMPERATURE (F) 22 -5 1972
SUNRISE AND SUNSET
DECEMBER 11 2020......SUNRISE 7:10 AM CST SUNSET 4:20 PM CST
DECEMBER 12 2020......SUNRISE 7:11 AM CST SUNSET 4:20 PM CST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
