093
CDUS41 KBOX 172123
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
423 PM EST WED DEC 17 2025
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 17 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 47 351 PM 64 2000 42 5 60
MINIMUM 28 141 AM -4 1876 29 -1 45
1919
AVERAGE 38 35 3 53
PRECIPITATION (IN)
TODAY 0.00 2.82 1970 0.14 -0.14 0.17
MONTH TO DATE 0.82 2.44 -1.62 3.80
SINCE DEC 1 0.82 2.44 -1.62 3.80
SINCE JAN 1 35.57 41.73 -6.16 43.54
SNOWFALL (IN)
TODAY MM 12.7 2020 0.3 MM 0.0
MONTH TO DATE 1.3 4.0 -2.7 0.3
SINCE DEC 1 1.3 4.0 -2.7 0.3
SINCE JUL 1 1.3 4.9 -3.6 0.3
DEGREE DAYS
HEATING
TODAY 27 30 -3 12
MONTH TO DATE 581 468 113 477
SINCE DEC 1 581 468 113 477
SINCE JUL 1 1518 1482 36 1260
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 865 800 65 891
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 17.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 61 200 AM
LOWEST 41 1100 AM
AVERAGE 51
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 42 63 2023
MINIMUM TEMPERATURE (F) 29 -6 1919
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 708 AM EST SUNSET 413 PM EST
DECEMBER 18 2025......SUNRISE 708 AM EST SUNSET 413 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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