Climatological Report (Monthly) Issued by NWS
000
CXUS53 KLOT 012116 CCA
CLMORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1041 AM CDT WED NOV 01 2023
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...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 94 10/06/1963
LOW 14 10/25/1887
HIGHEST 87 10/01 79 10/22
10/03 10/23
LOWEST 30 10/31 33 10/19
10/20
AVG. MAXIMUM 64.7 62.7 2.0 63.9
AVG. MINIMUM 49.4 45.4 4.0 44.2
MEAN 57.1 54.0 3.1 54.0
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 2 2.7 -0.7 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 12.06 1954
MINIMUM 0.18 1897
TOTALS 2.28 3.43 -1.15 1.66
DAILY AVG. 0.07 0.11 -0.04 0.05
DAYS >= .01 16 10.5 5.5 8
DAYS >= .10 8 6.3 1.7 3
DAYS >= .50 2 2.3 -0.3 1
DAYS >= 1.00 0 0.7 -0.7 0
GREATEST
24 HR. TOTAL 1.00 10/13 TO 10/14 0.75
SNOWFALL (INCHES)
RECORDS
TOTAL 6.3 1989
TOTALS 0.9 0.2 0.7 T
SINCE 7/1 0.9 0.2 0.7 T
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.1 -0.1 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL 0.9 10/31 TO 10/31 T
DEGREE DAYS
HEATING TOTAL 293 355 -62 345
SINCE 7/1 308 440 -132 MM
COOLING TOTAL 56 15 41 14
SINCE 1/1 1145 1003 142 MM
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WIND (MPH)
AVERAGE WIND SPEED 9.4
HIGHEST WIND SPEED/DIRECTION 26/030 DATE 10/14
HIGHEST GUST SPEED/DIRECTION 40/030 DATE 10/14
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.65
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 16
NUMBER OF DAYS CLOUDY 10
AVERAGE RH (PERCENT) 65
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 7
LIGHT RAIN 17 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 1
LIGHT SNOW 1 SLEET 0
FOG 13 FOG W/VIS <= 1/4 MILE 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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