Climatological Report (Monthly)
Issued by NWS Buffalo, NY
Issued by NWS Buffalo, NY
970
CXUS51 KBUF 030230
CLMROC
CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1028 AM EDT TUE JUL 01 2025
...................................
...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JUNE 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 100 06/21/1953
LOW 35 06/08/1949
HIGHEST 93 06/24 94 06/18
LOWEST 43 06/02 48 06/01
06/12
AVG. MAXIMUM 79.0 77.9 1.1 79.5
AVG. MINIMUM 60.5 57.4 3.1 60.1
MEAN 69.7 67.6 2.1 69.8
DAYS MAX >= 90 3 1.6 1.4 4
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 8.14 1922
MINIMUM 0.22 1963
TOTALS 5.98 3.37 2.61 3.40
DAYS >= .01 10 15
DAYS >= .10 7 6
DAYS >= .50 3 2
DAYS >= 1.00 2 1
GREATEST
24 HR. TOTAL 3.16 06/18 TO 06/19 1.55 06/29 TO 06/30
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 88.6 102.0 -13.4 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 27 49 -22 30
SINCE 7/1 5876 6273 -397 MM
COOLING TOTAL 177 128 49 181
SINCE 1/1 185 172 13 MM
................................................................
WIND (MPH)
AVERAGE WIND SPEED 8.8
HIGHEST WIND SPEED/DIRECTION 29/220
29/250
HIGHEST GUST SPEED/DIRECTION 45/280 DATE 06/22
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.69
NUMBER OF DAYS FAIR 2
NUMBER OF DAYS PC 15
NUMBER OF DAYS CLOUDY 13
AVERAGE RH (PERCENT) 69
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 5 RAIN 6
LIGHT RAIN 14 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 12 FOG W/VIS <= 1/4 MILE 1
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
... WARM AND HUMID JUNE ...
AFTER A PLEASANT MAY, THE HEAT AND HUMIDITY WERE TURNED ON FOR JUNE,
ESPECIALLY THE FINAL HALF OF THE MONTH WHERE DAYTIME HIGHS ROUTINELY
RAN IN THE 80S OR 90S AND SEVERAL NIGHTS REMAINED UNCOMFORTABLE IN
THE 70S. THERE WERE SEVERAL ROUNDS OF THUNDERSTORMS THIS MONTH
BRINGING THE MONTHLY PRECIPITATION TO WELL ABOVE NORMAL.
THE TEMPERATURE AVERAGED 69.7F THIS MONTH WHICH IS THE 16TH WARMEST
JUNE ON RECORD. THIS TEMPERATURE AVERAGE WAS ABOUT TWO DEGREES ABOVE
NORMAL. OVERNIGHT LOW TEMPERATURES HAD A LARGE POSITIVE TEMPERATURE
DEPARTURE. THE 4 DAYS REMAINING 70F OR WARMER IS TIED FOR 5TH
GREATEST ON RECORD. THE HIGHLIGHT OF THIS WARM MONTH WAS THE 22ND
THROUGH THE 25TH WHEN DAILY MEAN TEMPERATURES WERE 10 TO 15 DEGREES
ABOVE NORMAL. WITHIN THIS STRETCH OCCURRED TWO RECORD WARM MINIMUM
TEMPERATURES, WITH THESE BEING 77F ON THE 22ND AND 72F ON THE
24TH. THE 77F MINIMUM TEMPERATURE ON THE 22ND WAS ALSO THE WARMEST
MINIMUM TEMPERATURE ON RECORD FOR THE ENTIRE MONTH OF JUNE, BREAKING
THE FORMER RECORD BY 2 DEGREES (75/2021 AND 1934).
PRECIPITATION FOR THE MONTH TOTALED 5.98 INCHES WHICH IS ABOUT TWO
AND A HALF INCHES ABOVE NORMAL, AND IS THE 12TH WETTEST JUNE ON
RECORD. THE PRECIPITATION THIS MONTH WAS MAINLY DRIVEN BY
CONVECTION, OF WHICH OVER HALF THE MONTHLY RAINFALL OCCURRED ON ONE
DAY, THIS BEING JUNE 18TH. THE 3.15 INCHES OF RAIN THIS DATE BROKE
THE FORMER RECORD OF 2.18" SET BACK IN 1905 AND ALSO ESTABLISHED THE
BENCHMARK FOR WETTEST DAY EVER FOR THE MONTH OF JUNE. OF THE 9
WEEKEND DAYS THIS MONTH ONLY SUNDAY THE 15TH AND SATURDAY-SUNDAY THE
28TH AND 29TH REMAINED RAIN-FREE. THE 10 DAYS WITH MEASURABLE
PRECIPITATION IS 1 DAY FEWER THAN NORMAL.
THE MONTH BEGAN ON THE CHILLY SIDE WITH A DEEP UPPER LEVEL TROUGH OF
LOW PRESSURE OVERHEAD. THE COOL PATTERN WAS SHORT-LIVED AS A WARM
AND DEEPER MOISTURE AIRMASS PUSHED INTO WESTERN NEW YORK ON THE 5TH,
PRODUCING LARGE HAIL AND FLASH FLOODING ACROSS THE WESTERN SOUTHERN
TIER. ON THE 9TH ANOTHER WARM FRONT LIFTED INTO WESTERN PORTIONS OF
NEW YORK STATE; AND THUNDERSTORMS BECAME ABUNDANT UPON THIS FRONT,
BOTH NEAR LAKE ONTARIO AND ALSO WESTERN NEW YORK. ONE OF THESE
THUNDERSTORMS SPAWNED AN EF-1 TORNADO THAT TORE THROUGH THE TOWN OF
GREAT VALLEY NEW YORK DAMAGING SEVERAL STRUCTURES AS WELL AS
BRINGING HARDWOOD TREES DOWN. ON THE 18TH A COLD FRONT STALLED TO
THE WEST OF NEW YORK STATE, WITH A PLUME OF DEEP TROPICAL MOISTURE
STREAMING ACROSS WESTERN NEW YORK. THIS AIRMASS FUELED SEVERAL
CLUSTERS OF DRENCHING THUNDERSTORMS, OF WHICH SOME PRODUCED FLASH
FLOODING ACROSS PARTS OF FAR SOUTHERN ERIE COUNTY EASTWARD INTO THE
GENESEE VALLEY AND FINGER LAKES REGION WHERE MOST OF THE FLOODING
OCCURRED ON THE 18TH. THE ROCHESTER AIRPORT RECORDED 3.15 INCHES OF
RAIN WHICH IS THE 11TH GREATEST 1-DAY TOTAL FOR THE FLOWER CITY.
FLOODED ROADS MADE FOR A TRICKY LATE PM COMMUTE FOR THE CITY OF
ROCHESTER AND SURROUNDING NEIGHBORHOODS. WARM AND STICKY CONDITIONS
REMAINED ACROSS WESTERN NEW YORK THE REMAINDER OF THE MONTH. IN
FACT, FOR THE ENTIRE MONTH OF JUNE THE DEWPOINT AVERAGED 59.5F
WHICH IS THE HIGHEST AVERAGE IN THE PAST 20 YEARS AT THE AIRPORT.
FROM THE 22ND THROUGH THE 25TH THE TEMPERATURES NEVER DROPPED BELOW
70. THIS IS JUST THE FOURTH 4-DAY STRETCH OF CONSECUTIVE 70 DEGREE
OR WARMER MINIMUM TEMPERATURES IN THE MONTH OF JUNE, WITH THE OTHER
THREE OCCURRING IN JUNE 1925, JUNE 2008 AND JUNE OF 2021. ON THE
27TH THUNDERSTORMS STALLED AND EXPANDED ACROSS LIVINGSTON COUNTY,
BRINGING FLASH FLOODING TO GENESEO, YORK AND LAKEVILLE AREAS. OVER 5
INCHES OF RAIN SWELLED SMALL CREEKS INTO RAGING RIVERS, FLOODED MANY
ROADS AND BASEMENTS AND INUNDATED A SCHOOL. NUMEROUS SHOWERS AND
THUNDERSTORMS OCCURRED ON THE FINAL DAY OF THE MONTH BUT WITH LITTLE
IMPACTS.
WINDS WERE A BIT ABOVE NORMAL THIS MONTH, FINISHING EIGHT-TENTHS OF
A MILE PER HOUR ABOVE NORMAL. THE STRONGEST WIND GUST WAS 45 MPH
EARLY ON THE 22ND AS A COMPLEX OF THUNDERSTORMS PASSED BY WELL TO
THE EAST.
IN ALL, A HUMID AND WET SUMMER MONTH.
&&
THOMAS
$$