Climatological Report (Annual) Issued by NWS
000
CXUS53 KLOT 011730
CLAORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
936 AM CST WED JAN 1 2020
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...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 2019...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2019
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 105 07/24/1934
LOW -27 01/20/1985
HIGHEST 95 07/20 MM MM 97 08/04
05/27
LOWEST -23 01/30 MM MM -9 01/02
01/01
AVG. MAXIMUM 57.8 59.1 -1.3 59.1
AVG. MINIMUM 41.4 40.8 0.6 42.8
MEAN 49.6 49.9 -0.3 50.9
DAYS MAX >= 90 14 14.0 0.0 26
DAYS MAX <= 32 50 42.7 7.3 32
DAYS MIN <= 32 131 121.8 9.2 134
DAYS MIN <= 0 7 7.1 -0.1 6
PRECIPITATION (INCHES)
RECORD
MAXIMUM 50.86 2008
MINIMUM 22.22 1962
TOTALS 49.54 36.89 12.65 49.23
DAILY AVG. 0.14 0.10 0.04 0.14
DAYS >= .01 151 124.1 26.9 147
DAYS >= .10 93 69.1 23.9 87
DAYS >= .50 32 22.7 9.3 33
DAYS >= 1.00 10 8.3 1.7 15
GREATEST
24 HR. TOTAL 2.28 MM 2.49
SNOWFALL (INCHES)
RECORDS
TOTAL 95.3 1978
24 HR TOTAL MM
SNOW DEPTH 29 01/14/1979
TOTALS 45.7 36.3 9.4 44.8
SINCE 7/1 10.3 9.6 0.7 14.1
SNOWDEPTH AVG. 0 MM MM 0
DAYS >= TRACE 65 28.0 37.0 59
DAYS >= 1.0 14 11.4 2.6 15
GREATEST
SNOW DEPTH 10 01/29 12
24 HR TOTAL 5.4 MM 7.8
DEGREE_DAYS
HEATING TOTAL 6429 6339 90 6281
SINCE 7/1 MM 2411 MM MM
COOLING TOTAL 960 842 118 1290
SINCE 1/1 960 843 117 1290
FREEZE DATES
RECORD
EARLIEST 09/22/1995
LATEST 05/25/1992
EARLIEST 10/15
LATEST 04/23
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WIND (MPH)
AVERAGE WIND SPEED 9.6
HIGHEST WIND SPEED/DIRECTION 46/350 DATE 06/30
HIGHEST GUST SPEED/DIRECTION 60/240 DATE 11/27
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.70
NUMBER OF DAYS FAIR 48
NUMBER OF DAYS PC 143
NUMBER OF DAYS CLOUDY 174
AVERAGE RH (PERCENT) 71
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 60 MIXED PRECIP 0
HEAVY RAIN 47 RAIN 66
LIGHT RAIN 156 FREEZING RAIN 1
LT FREEZING RAIN 13 HAIL 2
HEAVY SNOW 2 SNOW 19
LIGHT SNOW 59 SLEET 5
FOG 177 FOG W/VIS <= 1/4 MILE 11
HAZE 48
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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