544
CXUS51 KBUF 031430
CLMROC
CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1030 AM EDT THU AUG 03 2023
...............................
..THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JULY 2023
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023
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 91 07/06 92 07/20
07/23
LOWEST 56 07/30 49 07/10
07/31
AVG. MAXIMUM 81.2 82.5 -1.3 82.8
AVG. MINIMUM 62.6 62.2 0.4 61.4
MEAN 71.9 72.3 -0.4 72.1
DAYS MAX >= 90 1 3.5 -2.5 2
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 6.81 3.56 3.25 1.78
DAYS >= .01 16 7
DAYS >= .10 13 5
DAYS >= .50 6 1
DAYS >= 1.00 0 0
GREATEST
24 HR. TOTAL 1.30 07/02 TO 07/03 0.94 07/18 TO 07/18
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 0 6 -6 1
SINCE 7/1 0 0 0 MM
COOLING TOTAL 222 234 -12 229
SINCE 1/1 329 406 -77 MM
............................................................
WIND (MPH)
AVERAGE WIND SPEED 6.3
HIGHEST WIND SPEED/DIRECTION 33/270
HIGHEST GUST SPEED/DIRECTION 46/230 DATE 07/13
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.62
NUMBER OF DAYS FAIR 3
NUMBER OF DAYS PC 20
NUMBER OF DAYS CLOUDY 8
AVERAGE RH (PERCENT) 75
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 14 MIXED PRECIP 0
HEAVY RAIN 10 RAIN 13
LIGHT RAIN 17 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 2
HAZE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
..WET JULY, WITH MANY ROUNDS OF THUNDERSTORMS
SUMMER’S CONVECTION WAS UPON WESTERN NEW YORK THIS JULY, WITH MANY
ROUNDS OF THUNDERSTORMS, OF WHICH SOME PRODUCED LOCALLY HEAVY
DOWNPOURS. A PERSISTENT UPPER LEVEL LOW SOUTH OF HUDSON BAY THIS
MONTH KEPT UNSETTLED DAYS THROUGHOUT THE GREAT LAKES REGION, WHILE
ALSO SUPPRESSING MUCH OF THE BLAZING SUMMER HEAT TO THE SOUTH. MOST
DAYS WERE NEAR OR JUST ABOVE THEIR DAILY TEMPERATURE NORMALS.
PRECIPITATION WAS MUCH ABOVE NORMAL WITH THE MONTH FINISHING IN THE
TOP 10 WETTEST ON RECORD.
THE TEMPERATURE FOR JULY AVERAGED 71.9F WHICH IS ABOUT A HALF-DEGREE
BELOW NORMAL. WHILE MUCH OF THE MONTH HAD HIGHS IN THE 70S OR 80S,
THERE WERE TWO HOT AND HUMID DAYS. THESE DAYS, THE 6TH AT 91F AND
THE 28TH AT 89F, WERE ALSO MET WITH HIGH HUMIDITY THAT BROUGHT
APPARENT TEMPERATURES WELL INTO THE 90S. THIS 91F READING ON THE 6TH
WAS THE FIRST SUCH 90 DEGREE TEMPERATURE OF THE SUMMER, WELL BELOW
THE TYPICAL TOTAL OF 6 DAYS THROUGH THE END OF JULY.
PRECIPITATION TOTALED 6.81 INCHES WHICH IS ALMOST DOUBLE THE NORMAL
FOR JULY. THIS TOTAL ALSO RANKS 6TH WETTEST ON RECORD FOR JULY. FOR
SUCH A WET SUMMER MONTH THE GREATEST DAILY PRECIPITATION TOTAL WAS
JUST 0.83” ON THE 24TH. THE 6 DAYS WITH AT LEAST A HALF INCH OF
RAINFALL TRAILS JUST JULY OF 1945 FOR THE GREATEST NUMBER OF DAYS IN
JULY WITH A HALF INCH OF RAINFALL.
THE MONTH TENDED TO BE CLOUDIER THAN NORMAL, WITH COMPLETE SUNNY
DAYS FEW IN NUMBER. AN ALL DAY RAIN EVENT, WITH VERY LITTLE THUNDER
OCCURRED ON THE 2ND OF THE MONTH. OTHERWISE MUCH OF THE
PRECIPITATION THIS MONTH WAS WITHIN THUNDERSTORMS. IN FACT THE 14
DAYS WITH THUNDER ARE MORE THAN DOUBLE THE TYPICAL AMOUNT (6 DAYS)
DURING THE MONTH OF JULY. NOTABLE DATES FOR STORMS INCLUDE THE 9TH
WITH FLOODING RAIN IN CANANDAIGUA, 18TH WITH A SEVERE THUNDERSTORM
FOLLOWING THE LAKE ONTARIO SHORELINE, 20TH WITH WIDESPREAD SEVERE
STORMS ACROSS THE GENESEE VALLEY, AND 24TH WITH SEVERAL TREES DOWN
EAST OF ROCHESTER. THOUGH THE RAINS KEPT THE AREA VEGETATION LUSH
THROUGHOUT THE MONTH, DEEP SOIL MOISTURE CONTENT CONTINUED TO BE
ABNORMALLY DRY WEST OF ROCHESTER. WILDFIRE SMOKE WAS LESS IMPACTFUL
THIS MONTH THAN RECENT MONTHS, WITH THE 17TH-18TH AND AGAIN THE 26TH
REPORTING SMOKE WITH REDUCED SURFACE VISIBILITY AND HIGHER FINE
PARTICULATE MATTER.
THE WATER TEMPERATURE ON LAKE ONTARIO PEAKED AT 75F THIS MONTH ON
THE 9TH, 10TH AND 29TH. WINDS AVERAGED BELOW NORMAL BY JUST OVER A
MILE PER HOUR. THE STRONGEST WIND GUST OF 46 MPH OCCURRED ON THE
13TH.
IN ALL, A CLOUDY, WET JULY WITH TYPICAL SUMMER HEAT.
THOMAS
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