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Climatological Report (Monthly)
Issued by NWS Buffalo, NY
Issued by NWS Buffalo, NY
000 CXUS51 KBUF 050235 CLMBUF CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1226 PM EDT THU JUN 01 2023 ................................... ...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF MAY 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 94 05/22/1911 LOW 25 05/04/1926 HIGHEST 87 05/31 86 05/12 LOWEST 34 05/18 38 05/08 AVG. MAXIMUM 67.4 67.4 -0.0 70.7 AVG. MINIMUM 45.8 48.3 -2.5 51.9 MEAN 56.6 57.9 -1.3 61.3 DAYS MAX >= 90 0 0.2 -0.2 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.2 -0.2 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 8.09 2011 MINIMUM 0.53 1877 TOTALS 1.15 3.37 -2.22 3.02 DAYS >= .01 7 13 DAYS >= .10 4 9 DAYS >= .50 0 2 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.43 05/19 TO 05/20 1.11 05/26 TO 05/27 SNOWFALL (INCHES) RECORDS TOTAL 7.9 1989 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 133.6 95.4 38.2 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 DEGREE DAYS HEATING TOTAL 278 254 24 171 SINCE 7/1 5719 6412 -693 MM COOLING TOTAL 25 32 -7 67 SINCE 1/1 31 34 -3 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 8.0 HIGHEST WIND SPEED/DIRECTION 30/240 HIGHEST GUST SPEED/DIRECTION 43/210 DATE 05/01 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM NUMBER OF DAYS FAIR 10 NUMBER OF DAYS PC 12 NUMBER OF DAYS CLOUDY 9 AVERAGE RH (PERCENT) 59 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 2 LIGHT RAIN 9 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 6 FOG W/VIS <= 1/4 MILE 0 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...SPLENDID MAY... SUMMER`S FINEST WEATHER WAS ON DISPLAY THROUGH THE MONTH OF MAY, WITH NEARLY ALL DAYS FROM WEEK TWO TO THE END OF THE MONTH SUNNY, DRY, AND WITH LOW HUMIDITY. THE FIRST WEEK OF THE MONTH DID FEATURE SEVERAL STORM SYSTEMS THAT BROUGHT RAIN. THE COOL START ALSO ALLOWED FOR THE TEMPERATURE AVERAGE FOR MAY OF 2023 TO FINISH BELOW NORMAL, THE FIRST MONTH WITH A MONTHLY BELOW NORMAL TEMPERATURE SINCE SEPTEMBER OF 2022. THE TEMPERATURE AVERAGED 56.6F DEGREES THIS MAY, WHICH IS 1.3 DEGREES BELOW MAY`S NORMAL TEMPERATURE. BELOW DAILY NORMAL TEMPERATURE VALUES OUTWEIGHED ABOVE DAILY NORMAL TEMPERATURE VALUES BY 18 TO 12. THE DAYS WITH BELOW NORMAL TEMPERATURES WERE EVENLY DISTRIBUTED THROUGHOUT THE MONTH. THERE WAS DAY-TO-DAY WARMING DURING THESE DRY STRETCHES, WITH THE WARMEST DAY THE LAST AT 87F. A LATE SEASON FROST ON THE 18TH OCCURRED WITH A LOW OF 34F. AFTER EARLY SPRING WARMTH, THIS FROST AND EVEN FREEZE TOWARDS THE SOUTH AND EAST OF BUFFALO DID MUCH DAMAGE TO AGRICULTURE, ESPECIALLY FRUIT TREES AND BUSHES. THE 4 DAYS REACHING INTO THE 80S ARE ONE MORE THAN NORMAL, AND ALL OCCURRED THE FINAL 4 DAYS OF THE MONTH. PRECIPITATION FOR THE MONTH TOTALED 1.15 INCHES, WHICH IS TWO AND A QUARTER INCHES BELOW NORMAL. THE RAIN FELL ALL DURING THE FIRST WEEK OF MAY, EXCEPT FOR THE 19-20TH WHEN SOME LIGHT RAIN SHOWERS FELL WITHIN SOUTHERLY FLOW ON FRIDAY THE 19TH, AND THEN A PERIOD OF LIGHT RAIN ON THE 20TH WITH THE COLD FRONT PASSAGE. IN FACT, THE SECOND WEEK ONWARD (MAY 8TH-31ST) WAS THE SECOND DRIEST (0.43"), TRAILING ONLY 1954 WHEN JUST 0.34" OF PRECIPITATION WAS RECORDED FROM MAY 8TH TO 31ST. THANKFULLY THE VERY WET START TO 2023 DELAYED THE IMPACTS OF THIS DRY STRETCH WITH VEGETATION GENERALLY REMAINING GREEN THROUGHOUT THE MONTH. OF THE 7 DAYS THAT HAD MEASURABLE PRECIPITATION, THREE HAD JUST ONE-HUNDREDTH OF AN INCH. THE 4 DAYS WITH TWO-HUNDREDTHS OR MORE OF PRECIPITATION RANKS 2ND FEWEST ON RECORD, TRAILING ONLY THE DRY MAY OF 1877. THERE WERE NO THUNDERSTORMS AT THE BUFFALO AIRPORT, AND NO SEVERE STORMS ANYWHERE ACROSS WNY THIS MONTH. MAY BEGAN WITH A DEEP STORM SYSTEM SPIRALING ACROSS THE GREAT LAKES. THIS SLOW MOVING SYSTEM BROUGHT RAIN SHOWERS TO OUR REGION THE FIRST 4 DAYS OF THE MONTH, AND TEMPERATURES IN THE 40S OR LOWER 50S. THE WETTEST DAY THIS STRETCH WAS THE 2ND WITH NEARLY A THIRD OF AN INCH OF RAINFALL. HIGH PRESSURE MAINTAINED SEASONABLE TEMPERATURES ON THE 5TH AND 6TH, WITH DRY CONDITIONS. A SHORTWAVE TROUGH BROUGHT SHOWERS BACK TO WESTERN NEW YORK ON THE 7TH, WITH THE RAIN FALLING THROUGH THE AFTERNOON HOURS. THEREAFTER THERE WAS JUST ONE SYSTEM OF NOTE THE REST OF MAY. THIS ON THE 19TH AND 20TH WHEN MOIST, SOUTHERLY FLOW BROUGHT A FEW RAIN SHOWERS ACROSS WESTERN NEW YORK DURING THE AFTERNOON OF THE 19TH, AND THE COLD FRONT PASSING ON THE 20TH BROUGHT A PERIOD OF RAIN. OTHERWISE MOST DAYS CONTAINED WALL TO WALL SUNSHINE, AT TIMES THROUGH A MILKY SMOKE FILLED SKY, COMFORTABLE LEVELS OF HUMIDITY AND LIGHT WINDS. THE WATER TEMPERATURE ROSE FROM 47F AT THE START OF MAY TO 58F BY THE END OF MAY. MOST OF THE WARMING OF THE WATER OCCURRED THE FINAL DAYS OF THE MONTH AS THE WATER TEMPERATURE WAS STILL JUST 50F DEGREES ON MAY 26TH. WINDS WERE LIGHT THIS MONTH, AVERAGING CLOSE TO 2 MPH BELOW NORMAL. THE STRONGEST WIND GUST OCCURRED ON THE 1ST, THIS AT 43 MPH DURING THE EARLY AFTERNOON HOURS. IN ALL, A QUIET, SUNNY AND DRY MONTH. && THOMAS $$
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