Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000
CXUS51 KBUF 021304
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
903 AM EDT WEDE OCT 2 2013

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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              99   09/03/1953
 LOW               28   09/28/1947
HIGHEST            92   09/11                         86  09/03
LOWEST             37   09/17                         39  09/24
AVG. MAXIMUM     71.4              71.6    -0.2     72.4
AVG. MINIMUM     50.5              52.0    -1.5     51.5
MEAN             61.0              61.8    -0.8     62.0
DAYS MAX >= 90      2               0.3     1.7        0
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         6.30   1977
 MINIMUM         0.28   1960
TOTALS           2.41              3.38   -0.97     4.45
DAYS >= .01        10                                 11
DAYS >= .10         7                                  7
DAYS >= .50         1                                  2
DAYS >= 1.00        1                                  1
GREATEST
 24 HR. TOTAL    1.04   09/21 TO 09/21

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   MM

DEGREE_DAYS
HEATING TOTAL     172               147      25      145
 SINCE 7/1        190               181       9      152
COOLING TOTAL      59                50       9       62
 SINCE 1/1        650               534     116      797
.................................................

WIND (MPH)
AVERAGE WIND SPEED              6.6
HIGHEST WIND SPEED/DIRECTION    25/300
HIGHEST GUST SPEED/DIRECTION    32/310    DATE  09/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       5
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      18     FOG W/VIS <= 1/4 MILE      1
HAZE                      3

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

$$
...SEPTEMBER 2013 SAW A WIDE RANGE IN TEMPERATURES AND BELOW AVERAGE
PRECIPITATION...

SEPTEMBER 2013 WILL GO DOWN IN THE RECORD BOOKS AS A MONTH WITH
FREQUENT SWINGS IN TEMPERATURES...FEATURING A COUPLE OF DAYS WITH
MID SUMMER-LIKE HEAT AND HUMIDITY FOLLOWED BY A CHANGE TO MORE
FALL-LIKE CONDITIONS WHEN TEMPERATURES GOT COLD ENOUGH FOR FROST
ACROSS MANY INLAND LOCATIONS. THUS...WHILE THE MONTHLY AVERAGE
TEMPERATURE OF 61.0 DEGREES WAS JUST 0.8 DEGREES BELOW THE
CLIMATOLOGICAL AVERAGE...THE DAILY TEMPERATURES SHOWED A LOT OF
VARIABILITY. A RELATIVELY RARE EVENT OCCURRED ON SEPTEMBER 11TH WHEN
A NEW RECORD HIGH LOW TEMPERATURE OF 74 DEGREES WAS RECORDED AT THE
ROCHESTER AIRPORT.

THE MONTHLY RAINFALL WAS 2.41 INCHES WHICH IS 0.97 INCH BELOW
AVERAGE. MEASURABLE PRECIPITATION THAT FELL ON TEN DAYS WAS MAINLY
LIGHT...WITH MOST DAYS SEEING LESS THAN ONE QUARTER INCH OF RAIN.
THE EXCEPTION TO THIS TREND OCCURRED ON THE 21ST WHEN A SLOW MOVING
COLD FRONT BROUGHT A LITTLE OVER AN INCH OF RAIN TO PARTS OF MONROE
COUNTY.

THE RELATIVELY DRY CONDITIONS THAT PREVAILED FOR MUCH OF THE MONTH
RESULTED IN A FAIR AMOUNT OF SUNSHINE. THE LAKE ONTARIO WATER
TEMPERATURE STARTED OUT AT 71 DEGREES AND COOLED TO 65 DEGREES BY
THE END OF THE MONTH.

OVERALL...SEPTEMBER WAS A PLEASANT START TO FALL.

&&

TJP

$$







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