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 $$