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000
CXUS53 KLOT 012009
CLAORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
209 PM CST SAT JAN 01 2022

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 2021...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2021

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   08/24         MM      MM       97  08/24
LOWEST            -7   02/07         MM      MM       -2  02/14
AVG. MAXIMUM    61.5               59.5     2.0     61.7
AVG. MINIMUM    45.1               43.0     2.1     44.9
MEAN            53.3               51.2     2.1     53.3
DAYS MAX >= 90    22               16.7     5.3       31
DAYS MAX <= 32    31               43.4   -12.4       19
DAYS MIN <= 32   107              121.3   -14.3      103
DAYS MIN <= 0      5                6.5    -1.5        1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       50.86   2008
 MINIMUM       22.22   1962
TOTALS         30.15              37.86   -7.71    39.22
DAILY AVG.      0.08               0.10   -0.02     0.11
DAYS >= .01      118              125.8    -7.8      118
DAYS >= .10       61               71.6   -10.6       77
DAYS >= .50       16               23.8    -7.8       22
DAYS >= 1.00       6                8.3    -2.3        7
GREATEST
 24 HR. TOTAL   1.91   08/24 TO 08/24               3.53

SNOWFALL (INCHES)
RECORDS
 TOTAL          95.3   1978
 SNOW DEPTH       29   01/14/1979
TOTALS          47.2               38.4     8.8     28.0
SINCE 7/1        1.9                9.6    -7.7      3.5
DAYS >= TRACE     51                 MM      MM       56
DAYS >= 1.0       13               11.4     1.6       13
GREATEST
 SNOW DEPTH       21   02/16                           3
 24 HR TOTAL     6.3   01/31 TO 01/31                3.1

DEGREE DAYS
HEATING TOTAL   5415               5974    -559     5472
 SINCE 7/1      1799               2220    -421     1989
COOLING TOTAL   1316               1003     313     1295
 SINCE 1/1      1316               1003     313     1295

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

WIND (MPH)
AVERAGE WIND SPEED              9.3
HIGHEST WIND SPEED/DIRECTION    41/240    DATE  12/11
                                41/200          12/15
HIGHEST GUST SPEED/DIRECTION    66/200    DATE  12/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.62
NUMBER OF DAYS FAIR           74
NUMBER OF DAYS PC            146
NUMBER OF DAYS CLOUDY        145

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             43     MIXED PRECIP               0
HEAVY RAIN               37     RAIN                      48
LIGHT RAIN              137     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       0
HEAVY SNOW                5     SNOW                      12
LIGHT SNOW               49     SLEET                      6
FOG                     133     FOG W/VIS <= 1/4 MILE      6
HAZE                     60

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$