Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000
CXUS51 KBUF 030039
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
839 PM EDT FRI AUG 2 2013

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JULY 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             102   07/10/1936
                        07/09/1936
 LOW               42   07/09/1963
HIGHEST            93   07/19                         97  07/17
                        07/17
LOWEST             50   07/25                         54  07/11
AVG. MAXIMUM     81.9              81.0     0.9     85.7
AVG. MINIMUM     64.1              60.7     3.4     63.3
MEAN             73.0              70.8     2.2     74.5
DAYS MAX >= 90      5               2.3     2.7        8
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.70   1947
 MINIMUM         0.43   1933
TOTALS           4.41              3.33    1.08     2.62
DAYS >= .01        13                                 11
DAYS >= .10         6                                  4
DAYS >= .50         2                                  2
DAYS >= 1.00        1                                  1
GREATEST
 24 HR. TOTAL    2.44   07/03 TO 07/04           07/25 TO 07/26

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0

DEGREE_DAYS
HEATING TOTAL       8                12      -4        0
 SINCE 7/1          8                12      -4        0
COOLING TOTAL     261               193      68      303
 SINCE 1/1        439               329     110      546
..................................................

WIND (MPH)
AVERAGE WIND SPEED              6.1
HIGHEST WIND SPEED/DIRECTION    39/300
HIGHEST GUST SPEED/DIRECTION    58/300    DATE  07/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       4
LIGHT RAIN               19     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      1
HAZE                      8

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

&&

...CHANGEABLE TEMPERATURES AND MORE WET WEATHER IN JULY...

THE MONTHLY AVERAGE TEMPERATURE FOR JULY ENDED UP 2.2 DEGREES ABOVE
AVERAGE...BUT THE MONTHLY AVERAGE DOES NOT TELL THE STORY OF THE
CHARACTER OF THE MONTH. JULY 2013 CAN BE BROKEN UP INTO THREE
DISTINCT TEMPERATURE REGIMES. THE FIRST TWO WEEKS OF THE MONTH WERE
ABOVE AVERAGE MOST OF THE TIME BUT NOT EXCESSIVELY SO. THERE WERE
ALSO A FEW SHORT STRETCHES OF AT OR BELOW AVERAGE TEMPERATURES FOR
THE FIRST TWO DAYS AND A THREE DAY STRETCH FROM THE 11TH THROUGH THE
13TH TO BREAK UP THE WARMTH.

A STRONG RIDGE OF HIGH PRESSURE THEN BUILT OVER MUCH OF THE
NORTHEAST AND GREAT LAKES REGION AND BROUGHT A 6 DAY LONG STRETCH OF
HOT AND VERY HUMID WEATHER DURING THE MIDDLE OF THE MONTH. DESPITE
THE HEAT...NO DAILY TEMPERATURE RECORDS WERE BROKEN. HUMIDITY DURING
THE PERIOD WAS EXCESSIVE...WHICH PRODUCED HEAT INDEX VALUES OF OVER
100 DEGREES INLAND FROM THE LAKE ON SEVERAL DAYS. THE HIGH
TEMPERATURE REACHED INTO THE 90S ON 5 DAYS WHICH IS ABOVE THE
AVERAGE OF FOUR IN JULY. ROCHESTER AVERAGES NINE 90 DEGREE DAYS PER
YEAR. MORE AMAZINGLY...THE LOW TEMPERATURE DID NOT DROP BELOW 70
DEGREES ON 10 DAYS...WELL ABOVE THE AVERAGE OF 3 DAYS IN JULY AND
EVEN WELL ABOVE THE YEARLY AVERAGE OF 6 DAYS.

A STRONG COLD FRONT MOVED THROUGH THE REGION DURING THE EVENING OF
THE 19TH AND USHERED IN BELOW AVERAGE TEMPERATURES THAT LASTED
THROUGH THE REST OF THE MONTH. FOR MOST THIS BROUGHT A WELCOMED
REPRIEVE FROM HEAT AND HUMIDITY.

PRECIPITATION TOTALED 4.41 INCHES FOR THE MONTH WHICH IS 1.08
INCHES ABOVE AVERAGE. MUCH OF THIS RAIN OCCURRED DURING A FEW
SIGNIFICANT EVENTS. 2.37 INCHES FELL ON THE 3RD FROM A PERSISTENT
AREA OF THUNDERSTORMS WHICH PRODUCED SOME WIND DAMAGE AND MINOR
FLOODING ACROSS THE AREA. THIS SET A NEW DAILY RECORD RAINFALL FOR
THE 3RD. JUST OVER AN INCH FELL FROM THE 19TH INTO THE 20TH AS A
STRONG COLD FRONT CROSSED THE REGION WITH VIVID THUNDERSTORMS WHICH
BROUGHT AN END TO THE LONG STRETCH OF HOT AND HUMID WEATHER. THERE
WERE ALSO A NUMBER OF DAYS WITH LIGHT RAINFALL. IN ALL...THERE WERE
13 DAYS WITH MEASURABLE RAIN...ABOVE THE AVERAGE OF 11 DAYS FOR
JULY.

&&

HITCHCOCK

$$






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