339 CDUS41 KBOX 210634 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 234 AM EDT SUN MAY 21 2023 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR MAY 20 2023... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1872 TO 2023 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 66 1159 PM 91 1996 68 -2 66 MINIMUM 53 325 AM 40 1892 51 2 52 AVERAGE 60 60 0 59 PRECIPITATION (IN) YESTERDAY 1.83R 1.23 1969 0.11 1.72 T MONTH TO DATE 2.11 2.03 0.08 0.48 SINCE MAR 1 9.50 9.83 -0.33 5.73 SINCE JAN 1 16.09 16.43 -0.34 12.67 SNOWFALL (IN) YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0 2001 2002 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE MAR 1 0.9 10.6 -9.7 2.1 SINCE JUL 1 12.4 49.2 -36.8 54.0 DEGREE DAYS HEATING YESTERDAY 5 6 -1 6 MONTH TO DATE 127 174 -47 164 SINCE MAR 1 1295 1498 -203 1328 SINCE JUL 1 4611 5436 -825 4950 COOLING YESTERDAY 0 1 -1 0 MONTH TO DATE 27 12 15 22 SINCE MAR 1 32 16 16 22 SINCE JAN 1 32 16 16 22 ................................................................... WIND (MPH) RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SE (150) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (180) AVERAGE WIND SPEED 9.3 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 1.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HEAVY RAIN RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 200 PM LOWEST 77 1200 AM AVERAGE 89 .......................................................... THE BOSTON MA CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 68 93 1921 MINIMUM TEMPERATURE (F) 52 41 1907 SUNRISE AND SUNSET MAY 21 2023...........SUNRISE 517 AM EDT SUNSET 805 PM EDT MAY 22 2023...........SUNRISE 517 AM EDT SUNSET 806 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$