327
CXUS51 KBUF 030326
CLMROC
CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1122 AM EDT SAT JUN 01 2024
...............................
..THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF MAY 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 94 05/30/1987
05/14/1974
LOW 26 05/02/1979
05/07/1970
HIGHEST 89 05/22 85 05/31
LOWEST 43 05/07 32 05/18
05/11
AVG. MAXIMUM 73.3 69.4 3.9 67.5
AVG. MINIMUM 53.3 48.2 5.1 43.7
MEAN 63.3 58.8 4.5 55.6
DAYS MAX >= 90 0 0.4 -0.4 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.6 -0.6 1
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 6.87 1894
MINIMUM 0.24 2007
TOTALS 3.14 2.86 0.28 1.39
DAYS >= .01 10 7
DAYS >= .10 6 5
DAYS >= .50 2 1
DAYS >= 1.00 1 0
GREATEST
24 HR. TOTAL 1.44 05/17 TO 05/17 0.65 05/19 TO 05/20
SNOWFALL (INCHES)
RECORDS
TOTAL 10.9 1989
TOTALS 0.0 0.1 -0.1 T
SINCE 7/1 52.5 102.0 -49.5 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
DEGREE DAYS
HEATING TOTAL 101 232 -131 297
SINCE 7/1 5154 6227 -1073 MM
COOLING TOTAL 58 40 18 13
SINCE 1/1 58 44 14 MM
............................................................
WIND (MPH)
AVERAGE WIND SPEED 7.4
HIGHEST WIND SPEED/DIRECTION 36/280 DATE 05/08
HIGHEST GUST SPEED/DIRECTION 52/280 DATE 05/08
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.65
NUMBER OF DAYS FAIR 4
NUMBER OF DAYS PC 16
NUMBER OF DAYS CLOUDY 11
AVERAGE RH (PERCENT) 68
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 7
LIGHT RAIN 22 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 15 FOG W/VIS <= 1/4 MILE 6
HAZE 5
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
.. A PLEASANT, BUT ABNORMALLY WARM MONTH
THE BEAT JUST GOES ON FOR WESTERN NEW YORK AS A MILD AIRFLOW PATTERN
THAT BEGAN AT THE START OF WINTER, CONTINUED THROUGH THE FINAL DAYS
OF METEOROLOGICAL SPRING. PLEASANT DAYS WITH TOLERABLE HUMIDITY
LEVELS OCCURRED FOR MUCH OF THE MONTH, WITH A PORTION OF THE MONTHLY
RAIN AT NIGHT.
THE TEMPERATURE AVERAGED 63.3°F THIS MAY WHICH RANKS 4TH WARMEST ON
RECORD. TEMPERATURE RECORDS FOR ROCHESTER DATE BACK TO 1871. FOR THE
YEAR, THE 5-MONTH AVERAGE TEMPERATURE OF 43.8°F RANKS TIED FOR
WARMEST ON RECORD WITH THE YEAR 2012. FOUR OF THE PAST SIX MONTHS
HAVE ALL RANKED WITHIN THEIR RESPECTIVE TOP 10 WARMEST MONTHS ON
RECORD. THERE WERE 7 DAYS THAT FINISHED BELOW NORMAL, THESE
OCCURRING THE PERIOD OF MAY 9TH TO 12TH AS WELL AS MAY 29TH TO 31ST.
THERE WAS VERY LITTLE EXCESSIVE HEAT THIS MONTH, WITH THE 3 DAYS IN
THE 80S ACTUALLY TWO DAYS LESS THAN NORMAL FOR A TYPICAL MAY. THERE
WERE NO RECORDS SET.
PRECIPITATION FOR THE MONTH TOTALED A QUARTER OF AN INCH ABOVE
NORMAL. THE WETTEST DAY WAS THE 17TH WHEN AFTERNOON AND EVENING
SHOWERS AND THUNDERSTORMS STALLED ACROSS THE GENESEE VALLEY AND
TOTALED 1.44 INCHES AT THE ROCHESTER AIRPORT. THIS VALUE SET A NEW
DAILY RECORD, BREAKING THE FORMER RECORD OF 0.79 INCHES LAST SET
BACK IN 1991. THE 10 DAYS WITH MEASURABLE PRECIPITATION IS TWO DAYS
LESS THAN THE LONG TERM MAY NORMAL. STRONG THUNDERSTORM ACTIVITY WAS
SLOW TO START THIS SPRING, AND THE FIRST SEVERE OF THE YEAR FOR
WESTERN NEW YORK DID NOT OCCUR UNTIL THE 22ND OF MAY, WITH STORMS
BLOSSOMING ACROSS THE SOUTHERN HALF OF WESTERN NEW YORK WITH TREES
AND POWER LINES DOWN THROUGH THE SOUTHERN AND WESTERN FINGER LAKES.
THE FIRST WEEK OF THE MONTH WAS SPLENDID, WITH DAYTIME TEMPERATURES
ABOVE NORMAL, AND OVERNIGHT LOWS IN THE LOWER 50S, ALLOWING FOR OPEN
WINDOW FRESH-AIR SLEEPING CONDITIONS. THE EXCEPTION WAS THE 5TH WHEN
AN AREA OF SHOWERS FROM THE SOUTH SLOWLY PASSED ACROSS WESTERN NEW
YORK. A WARM FRONT EXTENDED INTO WESTERN NEW YORK THE EARLY MORNING
OF THE 8TH, WITH STRONG OVERNIGHT THUNDERSTORMS AWAKING ROCHESTER.
THE MORNING OF THE 16TH SAW AREAS OF DENSE FOG OVER WESTERN NEW
YORK. A COLD FRONT BROUGHT A PERIOD OF SHOWERS THE AFTERNOON OF THE
17TH, WITH OVER AN INCH OF RAIN FALLING. THE 19TH THROUGH THE 22ND
FEATURED A PERIOD OF VERY WARM TEMPERATURES, ALONG WITH A BIT OF
HUMIDITY IN THE AIR. A FEW SHOWERS AND THUNDERSTORMS WERE AROUND
WESTERN NEW YORK ON THE 22ND, WITH STRONG TO SEVERE STORMS ACROSS
THE SOUTHERN TIER AND INTO THE FINGER LAKES OF WESTERN NEW YORK.
ANOTHER COLD FRONT ON THE 25TH BROUGHT ADDITIONAL SHOWERS AND
THUNDERSTORMS TO THE ROCHESTER REGION. FOLLOWING A COLD FRONT ON THE
29TH WITH SOME EARLY MORNING SHOWERS, LIGHT NORTHERLY FLOW BROUGHT
LOW HUMIDITY, ABUNDANT SUNSHINE AND PLEASANT CONDITIONS THE FINAL
TWO DAYS OF MAY.
WINDS WERE A BIT BELOW NORMAL, AND THE STRONGEST GUST OF 52 MILES
PER HOUR FROM THE WEST ON THE 8TH OCCURRED BEHIND A COLD FRONT.
IN ALL A PLEASANT MONTH, THAT AGAIN FEATURED LIMITED BELOW NORMAL
TEMPERATURE DAYS.
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