382
CXUS53 KLOT 012212 CCA
CLAORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
412 PM CST MON JAN 01 2024

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 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
................................................................
TEMPERATURE (F)
RECORD
 HIGH            105   07/24/1934
 LOW             -27   01/20/1985
HIGHEST          100   08/24                          99  06/21
LOWEST            -1   01/31                          -8  12/23
                       02/03
AVG. MAXIMUM    62.4               59.5     2.9     59.7
AVG. MINIMUM    45.7               43.0     2.7     42.8
MEAN            54.0               51.2     2.8     51.3
DAYS MAX >= 90    21               16.7     4.3       16
DAYS MAX <= 32    16               43.4   -27.4       46
DAYS MIN <= 32    91              121.3   -30.3      110
DAYS MIN <= 0      2                6.5    -4.5        6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       50.86   2008
 MINIMUM       22.22   1962
TOTALS         33.73              37.86   -4.13    31.99
DAILY AVG.      0.09               0.10   -0.01     0.09
DAYS >= .01      135              125.8     9.2      114
DAYS >= .10       76               71.6     4.4       65
DAYS >= .50       20               23.8    -3.8       18
DAYS >= 1.00       7                8.3    -1.3        6
GREATEST
 24 HR. TOTAL   3.79   07/01 TO 07/02               1.79

SNOWFALL (INCHES)
RECORDS
 TOTAL          95.3   1978
TOTALS          19.8               38.4   -18.6     35.2
SINCE 7/1        3.9                9.6    -5.7      4.3
DAYS >= 1.0        6               11.4    -5.4       12
GREATEST
 SNOW DEPTH        3   01/30                           6  01/29
                       01/31
                       02/01
                                                          02/03
 24 HR TOTAL     3.6   01/25 TO 01/25                5.6

DEGREE DAYS
HEATING TOTAL   5014               5974    -960     6044
 SINCE 7/1      1762               2220    -458     2166
COOLING TOTAL   1145               1003     142     1174
 SINCE 1/1      1145               1003     142     1174
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
HIGHEST WIND SPEED/DIRECTION    37/320    DATE  07/28
HIGHEST GUST SPEED/DIRECTION    58/230    DATE  07/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.63
NUMBER OF DAYS FAIR           64
NUMBER OF DAYS PC            167
NUMBER OF DAYS CLOUDY        134

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             37     MIXED PRECIP               1
HEAVY RAIN               31     RAIN                      54
LIGHT RAIN              133     FREEZING RAIN              0
LT FREEZING RAIN          5     HAIL                       8
HEAVY SNOW                0     SNOW                       8
LIGHT SNOW               42     SLEET                      7
FOG                     140     FOG W/VIS <= 1/4 MILE     10
HAZE                     64

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

$$