Climatological Report (Monthly)
Issued by NWS

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CXUS53 KLOT 012159 CCA
CLMORD

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO IL
848 AM CDT MON APR 1 2013

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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE MONTH OF MARCH 2013...



CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              88   03/29/1986
 LOW              -12   03/04/1873
 HIGHEST           59   03/31                         87  03/21
                        03/30
 LOWEST            14   03/21                         21  03/05
                        03/20
AVG. MAXIMUM     39.6              46.6    -7.0     63.3
AVG. MINIMUM     25.6              29.2    -3.6     43.6
MEAN             32.6              37.9    -5.3     53.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      4               2.9     1.1        1
DAYS MIN <= 32     28              19.6     8.4        6
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.58   1922
 MINIMUM         0.29   1910
TOTALS           2.00              2.50   -0.50     2.68
DAILY AVG.       0.06              0.08   -0.02     0.09
DAYS >= .01         9              11.1    -2.1        7
DAYS >= .10         3               5.5    -2.5        6
DAYS >= .50         2               1.5     0.5        2
DAYS >= 1.00        0               0.4    -0.4        1
GREATEST
 24 HR. TOTAL    0.87   03/10 TO 03/10

SNOWFALL (INCHES)
RECORDS
 TOTAL           23.1   1926
TOTALS           10.4               5.6     4.8      0.3
SINCE 7/1        30.0              35.1    -5.1     19.8
SNOWDEPTH AVG.      1                MM      MM        0
DAYS >= 1.0         1               1.7    -0.7        0
GREATEST
 SNOW DEPTH        10   03/06                          0  MM
 24 HR TOTAL      9.2   03/05

DEGREE_DAYS
HEATING TOTAL     994               841     153      390
 SINCE 7/1       5396              5575    -179     4363
COOLING TOTAL       0                 1      -1       39
 SINCE 1/1          0                 1      -1       39

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

WIND (MPH)
AVERAGE WIND SPEED              10.3
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  03/18
HIGHEST GUST SPEED/DIRECTION    43/010    DATE  03/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         17

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW               13     SLEET                      2
FOG                      11     FOG W/VIS <= 1/4 MILE      3
HAZE                      1


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

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