Climatological Report (Seasonal)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
000
CXUS53 KLOT 012048
CLSORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
248 PM CST WED MAR 01 2023

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2022 TO 2/28/2023...

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             75   02/27/1976
 LOW             -27   01/20/1985
HIGHEST           59   12/29                          66  12/15
                                                          12/16
LOWEST            -8   12/23                          -6  01/26
AVG. MAXIMUM    38.5               34.6     3.9     36.6
AVG. MINIMUM    25.0               21.6     3.4     20.8
MEAN            31.8               28.1     3.7     28.7
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32    23               38.1   -15.1       33
DAYS MIN <= 32    62               77.9   -15.9       80
DAYS MIN <= 0      5                6.4    -1.4        3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       13.79   1950
 MINIMUM        1.60   1931
TOTALS          8.59               6.07    2.52     5.73
DAILY AVG.      0.10               0.07    0.03     0.06
DAYS >= .01       28               31.0    -3.0       29
DAYS >= .10       17               14.7     2.3       13
DAYS >= .50        5                3.3     1.7        3
DAYS >= 1.00       4                0.7     3.3        0
GREATEST
 24 HR. TOTAL   1.51   12/14 TO 12/15               1.02

SNOWFALL (INCHES)
RECORDS
 TOTAL          80.6   1979
TOTALS          16.8               29.6   -12.8     28.6
SINCE 7/1       17.9               31.6   -13.7     28.6
DAYS >= 1.0        7                8.9    -1.9        9
GREATEST
 SNOW DEPTH        3   01/29                           6  01/29
                       01/30
                       01/31
                       02/01
 24 HR TOTAL     3.6   01/25 TO 01/25                5.6  02/03

DEGREE DAYS
HEATING TOTAL   2970               3318    -348     3249
 SINCE 7/1      4035               4470    -435     4217
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  0       0        0
................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    32/270    DATE  12/23
                                32/190          02/14
                                32/240          02/15
HIGHEST GUST SPEED/DIRECTION    55/180    DATE  02/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.75
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             24
NUMBER OF DAYS CLOUDY         56

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               1
HEAVY RAIN                7     RAIN                      13
LIGHT RAIN               23     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       4
HEAVY SNOW                0     SNOW                       7
LIGHT SNOW               29     SLEET                      5
FOG                      45     FOG W/VIS <= 1/4 MILE      7
HAZE                     20

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

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.