121
CDUS41 KBOX 120523
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1223 AM EST FRI DEC 12 2025
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 11 2025
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)
YESTERDAY
MAXIMUM 40 207 AM 68 1911 43 -3 62
MINIMUM 25 1159 PM -2 1876 31 -6 37
AVERAGE 33 37 -4 50
PRECIPITATION (IN)
YESTERDAY 0.00 2.76 2024 0.14 -0.14 2.76
MONTH TO DATE 0.75 1.60 -0.85 3.61
SINCE DEC 1 0.75 1.60 -0.85 3.61
SINCE JAN 1 35.50 40.89 -5.39 43.35
SNOWFALL (IN)
YESTERDAY 0.0 2.8 2019 0.2 -0.2 0.0
MONTH TO DATE T 2.3 -2.3 0.3
SINCE DEC 1 T 2.3 -2.3 0.3
SINCE JUL 1 T 3.2 -3.2 0.3
DEGREE DAYS
HEATING
YESTERDAY 32 28 4 15
MONTH TO DATE 367 294 73 309
SINCE DEC 1 367 294 73 309
SINCE JUL 1 1304 1308 -4 1092
COOLING
YESTERDAY 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)
RESULTANT WIND SPEED 20 RESULTANT WIND DIRECTION W (270)
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 20.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 1200 AM
LOWEST 26 1200 PM
AVERAGE 58
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 43 68 1911
1979
MINIMUM TEMPERATURE (F) 30 2 1988
SUNRISE AND SUNSET
DECEMBER 12 2025......SUNRISE 704 AM EST SUNSET 412 PM EST
DECEMBER 13 2025......SUNRISE 705 AM EST SUNSET 412 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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