Climatological Report (Daily)
Issued by NWS
Issued by NWS
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
368
CDUS43 KLOT 030631
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT SUN AUG 03 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 2 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 78 2:59 PM 101 1991 84 -6 87
MINIMUM 59 4:44 AM 51 1985 66 -7 69
AVERAGE 69 75 -6 78
PRECIPITATION (IN)
YESTERDAY 0.00 5.63 1885 0.15 -0.15 T
MONTH TO DATE 0.00 0.30 -0.30 0.51
SINCE JUN 1 7.92 8.11 -0.19 9.50
SINCE JAN 1 17.42 22.76 -5.34 24.77
SNOWFALL (IN)
YESTERDAY 0.0 T 1957 0.0 0.0 0.0
2015
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 T
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 13 33 -20 6
SINCE JUL 1 0 2 -2 0
COOLING
YESTERDAY 4 10 -6 13
MONTH TO DATE 7 20 -13 27
SINCE JUN 1 696 545 151 621
SINCE JAN 1 730 615 115 701
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 6.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 6:00 AM
LOWEST 35 3:00 PM
AVERAGE 59
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 98 1930
1944
1964
MINIMUM TEMPERATURE (F) 66 48 1894
SUNRISE AND SUNSET
AUGUST 3 2025........SUNRISE 5:47 AM CDT SUNSET 8:07 PM CDT
AUGUST 4 2025........SUNRISE 5:48 AM CDT SUNSET 8:06 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$