Climatological Report (Annual)
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000
CXUS53 KLOT 011730
CLAORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
936 AM CST WED JAN 1 2020

...................................

...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
................................................................
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
.................................................................

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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