Climatological Report (Seasonal)
Issued by NWS

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CXUS53 KLOT 012304
CLSORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
504 PM CST MON MAR 01 2021

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2020 TO 2/28/2021...

CLIMATE NORMAL PERIOD: 1981 TO 2010
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             75   02/27/1976
 LOW             -27   01/20/1985
HIGHEST           58   12/23         MM      MM       61  12/26
LOWEST            -7   02/07         MM      MM       -2  02/14
AVG. MAXIMUM    33.5               33.6    -0.1     38.1
AVG. MINIMUM    21.3               19.1     2.2     24.7
MEAN            27.4               26.4     1.0     31.4
DAYS MAX >= 90     0                0.0     0.0       MM
DAYS MAX <= 32    33               37.8    -4.8       MM
DAYS MIN <= 32    80               78.0     2.0       MM
DAYS MIN <= 0      5                7.0    -2.0       MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       13.79   1950
 MINIMUM        1.60   1931
TOTALS          5.75               5.77   -0.02     5.12
DAILY AVG.      0.06               0.06   -0.00     0.06
DAYS >= .01       32               30.3     1.7       MM
DAYS >= .10       14               14.1    -0.1       MM
DAYS >= .50        3                3.0     0.0       MM
DAYS >= 1.00       0                0.7    -0.7       MM
GREATEST
 24 HR. TOTAL   0.85   12/12 TO 12/12               0.93

SNOWFALL (INCHES)
RECORDS
 TOTAL          80.6   1979
TOTALS          46.3               28.1    18.2     18.6
SINCE 7/1       47.0               29.5    17.5       MM
DAYS >= TRACE     43                 MM      MM       MM
DAYS >= 1.0       12                8.9     3.1       MM
GREATEST
 SNOW DEPTH       21   02/16                           3  02/15
                                                          02/14
                                                          02/13
 24 HR TOTAL     6.3   01/31 TO 01/31                3.1  01/17 TO 01/17

DEGREE DAYS
HEATING TOTAL   3341               3477    -136     3033
 SINCE 7/1      4340               4733    -393       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  0       0        0
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
HIGHEST WIND SPEED/DIRECTION    32/250    DATE  12/24
HIGHEST GUST SPEED/DIRECTION    49/250    DATE  02/04

SKY COVER
AVERAGE SKY COVER           0.72


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       2
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       0
HEAVY SNOW                4     SNOW                      11
LIGHT SNOW               42     SLEET                      3
FOG                      42     FOG W/VIS <= 1/4 MILE      4
HAZE                     29

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

$$


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