Climatological Report (Monthly)
Issued by NWS

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CXUS53 KLOT 011548
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
828 AM CST SUN MAR 1 2015

...................................
...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015

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              -21   02/09/1899

HIGHEST            41   02/07        35       6       49  02/20
LOWEST            -10   02/28        19     -29       -8  02/11

AVG. MAXIMUM     23.4              35.3   -11.9     25.7
AVG. MINIMUM      5.7              20.1   -14.4      8.9
MEAN             14.6R             27.7   -13.1     17.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     24              10.3    13.7       23
DAYS MIN <= 32     28              24.0     4.0       27
DAYS MIN <= 0       9               1.7     7.3        7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.98   1881
 MINIMUM         0.06   1877

TOTALS           1.45              1.79   -0.34     2.48

DAILY AVG.       0.05              0.06   -0.01     0.09
DAYS >= .01        11               8.8     2.2        7
DAYS >= .10         3               4.4    -1.4        4
DAYS >= .50         1               0.9     0.1        1
DAYS >= 1.00        0               0.3    -0.3        1
GREATEST
 24 HR. TOTAL    0.87   02/01 TO 02/01

SNOWFALL (INCHES)
RECORDS
 TOTAL           29.0   2011

TOTALS           26.8               9.1    17.7     19.5

SINCE 7/1        43.6              29.8    13.8     68.3
SNOWDEPTH AVG.      8                 3       5        8
DAYS >= 1.0         5               2.7     2.3        5
GREATEST
 SNOW DEPTH        18   02/02                         14  02/18
 24 HR TOTAL     16.2   02/01 TO 02/01

DEGREE_DAYS
HEATING TOTAL    1405              1044     361     1328
 SINCE 7/1       5180              4734     446     5415
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.8
HIGHEST WIND SPEED/DIRECTION    38/330    DATE  02/14
HIGHEST GUST SPEED/DIRECTION    48/340    DATE  02/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                2     SNOW                       3
LIGHT SNOW               19     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      2
HAZE                      7

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

&&

RECORDS...

MONTHLY...
TIED FEBRUARY 1875 FOR COLDEST FEBRUARY MONTHLY AVERAGE.
THIRD SNOWIEST FEBRUARY...26.8.....FEB 2011 HAD 29.0...
                                   FEB 1896 HAD 27.8.
DAILY RECORDS...
FEB 1...SET RECORD FOR GREATEST PRECIP FOR THE DAY...0.87...
                                    OLD RECORD 0.74 IN 2011.
FEB 1...SET RECORD FOR GREATEST SNOWFALL FOR THE DAY...16.2...
                                 ...OLD RECORD 13.6 IN 2011.
FEB 19...SET RECORD FOR LOW MINIMUM WITH -8....
                                    ...OLD RECORD -7 IN 1936.
FEB 19...SET RECORD FOR COLDEST HIGH WITH 4 ABOVE...
                                ...OLD RECORD 9 ABOVE IN 1936.
FEB 28...SET RECORD LOW MINIMUM.WITH -10...
                                   ...OLD RECORD 0 IN 1884

$$




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