Climatological Report (Monthly)
Issued by NWS Buffalo, NY
Issued by NWS Buffalo, NY
077
CXUS51 KBUF 052055
CLMROC
CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
536 AM EDT TUE OCT 01 2024
...................................
...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2024
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 85 09/15 92 09/06
LOWEST 46 09/03 45 09/20
09/21
09/22
AVG. MAXIMUM 76.7 73.6 3.1 74.2
AVG. MINIMUM 56.0 53.6 2.4 55.1
MEAN 66.4 63.6 2.8 64.7
DAYS MAX >= 90 0 0.9 -0.9 2
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.1 -0.1 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 6.30 1977
MINIMUM 0.28 1960
TOTALS 3.69 3.18 0.51 1.37
DAYS >= .01 10 6
DAYS >= .10 7 3
DAYS >= .50 2 1
DAYS >= 1.00 1 0
GREATEST
24 HR. TOTAL 2.01 09/06 TO 09/07 0.70 09/18 TO 09/18
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.0 0.0 0
DAYS >= 0.1 0 0
GREATEST
SNOW DEPTH 0 0 MM
24 HR TOTAL MM MM 0.0
DEGREE DAYS
HEATING TOTAL 32 114 -82 85
SINCE 7/1 42 132 -90 MM
COOLING TOTAL 78 72 6 81
SINCE 1/1 805 668 137 MM
................................................................
WIND (MPH)
AVERAGE WIND SPEED 6.0
HIGHEST WIND SPEED/DIRECTION 28/280
HIGHEST GUST SPEED/DIRECTION 39/280 DATE 09/08
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.53
NUMBER OF DAYS FAIR 10
NUMBER OF DAYS PC 11
NUMBER OF DAYS CLOUDY 9
AVERAGE RH (PERCENT) 71
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 5 RAIN 6
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 16 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.
&&
... WARM AND DRY FOR THE START OF METEOROLOGICAL AUTUMN ...
WARM DAYS OF SUMMER CONTINUED THROUGH THE MONTH OF SEPTEMBER, A
TREND THAT HAS CONTINUED IN RECENT YEARS. THOUGH THE MONTH STARTED
COOL, WITH A BIT OF A BREEZE, THE FINAL 20 DAYS OF THE MONTH
FINISHED AT OR ABOVE NORMAL TEMPERATURE, ENOUGH TO PLACE SEPTEMBER
2024 INTO 13TH WARMEST ON RECORD. STORMY WEATHER OCCURRED WITHIN THE
COOLER FIRST THIRD OF THE MONTH, INCLUDING 3 TORNADOES IN WESTERN
NEW YORK AND AN ADDITIONAL 4TH TORNADO IN JEFFERSON COUNTY TO THE
EAST OF LAKE ONTARIO. THIS BRINGS THE NEW YORK STATE RECORD BREAKING
YEAR FOR TORNADOES TO A TOTAL OF 32 THROUGH SEPTEMBER.
THE TEMPERATURE AVERAGED 66.4F IN SEPTEMBER, WHICH IS ALMOST THREE
DEGREES ABOVE NORMAL. ABOVE NORMAL WARMTH FOR SEPTEMBER IS NO
SURPRISE AS JUST THREE SEPTEMBERS SINCE 2007 HAVE FEATURED BELOW
NORMAL AVERAGE TEMPERATURE (2009, 2013 AND 2022). ONLY 2 OF THE
FIRST 10 DAYS OF THE MONTH WERE ABOVE NORMAL, WITH THE FIRST 10 DAYS
AVERAGING 3.8 DEGREES BELOW NORMAL. ALL 20 OF THE FINAL DAYS OF THE
MONTH WERE AT OR ABOVE NORMAL TEMPERATURE, AND AVERAGED 6.3 DEGREES
ABOVE NORMAL. THE MAXIMUM TEMPERATURE ON THE 2ND AND 7TH WAS 66F,
WHICH ALSO HAPPENED TO BE THE "COOLEST" MAXIMUM TEMPERATURE FOR THE
ENTIRE MONTH. THIS TIES WITH 2005 FOR WARMEST LOWEST MAXIMUM
TEMPERATURE FOR THE MONTH OF SEPTEMBER IN ROCHESTER`S 154 YEAR
PERIOD OF RECORD.
PRECIPITATION FOR THE MONTH WAS ABOVE NORMAL BY ABOUT A HALF AN
INCH. ABOUT THREE-QUARTERS OF THE PRECIPITATION FOR THE MONTH
OCCURRED IN THE COOLER AND WETTER FIRST THIRD OF THE MONTH. A DAILY
RECORD 1.44 INCHES OF PRECIPITATION FELL ON THE 6TH, BREAKING THE
FORMER RECORD OF 1.35 INCHES SET BACK IN 1898. AFTER A WEEK AND A
HALF OF DRY WEATHER, RAIN SHOWERS RETURNED DURING THE 21ST TO 26TH
OF THE MONTH RETURNING EARLY AUTUMN VEGETATION BACK TO A LUSH GREEN
COLOR. THERE WERE FOUR DAYS WITH THUNDERSTORMS THIS MONTH WHICH IS
ONE DAY GREATER THAN SEPTEMBER NORMAL.
THROUGH THE FIRST 10 DAYS OF SEPTEMBER A COOL PATTERN PERSISTED,
WITH SEVERAL STORMY DAYS WITHIN THE WEST TO NORTHWEST FLOW. ON THE
6TH AN EF-1 TORNADO RIPPED THROUGH THE WIRT AND FRIENDSHIP AREAS.
THREE DAYS LATER TWO ADDITIONAL EF-0 TORNADOES FORMED IN WESTERN NEW
YORK, WITH ONE ON THE WESTERN SIDE OF GRAND ISLAND AND ANOTHER
FORMING NEAR PEMBROKE DURING THE EVENING HOURS. STARTING ON THE 11TH
A MILDER, AND DRIER PATTERN WITH A SOUTHEASTERLY FLOW ENSUED WITH
VERY WARM AFTERNOONS INTO THE 80S AND SEVERAL DAYS ON THE SUMMER-
LIKE HUMID SIDE. THESE 80S WERE ONLY REPLACED WITH 70S OR UPPER 60S
FOR THE FINAL WEEK OF THE MONTH, THOUGH SEVERAL DAYS OF RAIN
SHOWERS, AND CLOUDIER DAYS DID RETURN.
THE WINDS FOR THE MONTH WERE A BIT BELOW NORMAL, WITH AN AVERAGE
SPEED OF 6.0 MPH. THE STRONGEST GUST OCCURRED ON THE 8TH FROM THE
SOUTHWEST AT 39 MPH.
IN ALL, ANOTHER PLEASANTLY WARM MONTH.
&&
THOMAS
$$