489
CDUS41 KBOX 130533
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
133 AM EDT WED MAY 13 2026
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 12 2026
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 64 449 PM 88 1991 65 -1 75
2001
MINIMUM 48 1132 PM 33 1907 49 -1 46
AVERAGE 56 57 -1 61
PRECIPITATION (IN)
YESTERDAY 0.00 1.42 1888 0.09 -0.09 0.00
MONTH TO DATE 0.58 1.24 -0.66 3.00
SINCE MAR 1 5.69 9.04 -3.35 10.23
SINCE JAN 1 8.98 15.64 -6.66 15.54
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0
2001
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 1.9 10.6 -8.7 T
SINCE JUL 1 62.8 49.2 13.6 28.1
DEGREE DAYS
HEATING
YESTERDAY 9 8 1 4
MONTH TO DATE 96 116 -20 72
SINCE MAR 1 1311 1440 -129 1191
SINCE JUL 1 5438 5378 60 4950
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 0 4 -4 6
SINCE MAR 1 3 8 -5 12
SINCE JAN 1 3 8 -5 12
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 8.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 71 900 PM
LOWEST 23 400 PM
AVERAGE 47
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 87 1947
MINIMUM TEMPERATURE (F) 50 37 2020
SUNRISE AND SUNSET
MAY 13 2026...........SUNRISE 525 AM EDT SUNSET 757 PM EDT
MAY 14 2026...........SUNRISE 524 AM EDT SUNSET 758 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page