671
CXUS53 KLOT 011753
CLSORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1253 PM CDT MON SEP 01 2025
...............................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2025 TO 8/31/2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 105 07/24/1934
LOW 35 06/04/1945
HIGHEST 95 07/03 99 08/27
08/09
08/16
LOWEST 46 06/01 50 06/11
AVG. MAXIMUM 83.9 82.5 1.4 83.7
AVG. MINIMUM 66.1 64.1 2.0 65.5
MEAN 75.0 73.3 1.7 74.6
DAYS MAX >= 90 26 14.0 12.0 19
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 23.48 1987
MINIMUM 3.16 1894
TOTALS 12.95 12.06 0.89 11.59
DAILY AVG. 0.14 0.13 0.01 0.12
DAYS >= .01 33 30.2 2.8 33
DAYS >= .10 19 19.0 0.0 22
DAYS >= .50 9 7.9 1.1 8
DAYS >= 1.00 4 3.3 0.7 3
GREATEST
24 HR. TOTAL 2.28 08/16 TO 08/17 3.14
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 T
SINCE 7/1 0.0 0.0 0.0 0.0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL 0.0 0.0
DEGREE DAYS
HEATING TOTAL 18 37 -19 6
SINCE 7/1 5 2 3 0
COOLING TOTAL 958 802 156 906
SINCE 1/1 992 872 120 986
............................................................
WIND (MPH)
AVERAGE WIND SPEED 8.2
HIGHEST WIND SPEED/DIRECTION 41/230 DATE 07/16
HIGHEST GUST SPEED/DIRECTION 67/230 DATE 07/16
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.56
NUMBER OF DAYS FAIR 16
NUMBER OF DAYS PC 56
NUMBER OF DAYS CLOUDY 20
AVERAGE RH (PERCENT) 68
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 26 MIXED PRECIP 0
HEAVY RAIN 13 RAIN 14
LIGHT RAIN 37 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 29 FOG W/VIS <= 1/4 MILE 1
HAZE 26
- 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