537
CDUS41 KBOX 170548
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
148 AM EDT WED SEP 17 2025
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 16 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 68 105 PM 96 1939 73 -5 76
MINIMUM 57 540 AM 42 1984 58 -1 56
AVERAGE 63 66 -3 66
PRECIPITATION (IN)
YESTERDAY 0.00 5.63 1933 0.13 -0.13 0.00
MONTH TO DATE 1.43 1.77 -0.34 T
SINCE SEP 1 1.43 1.77 -0.34 T
SINCE JAN 1 26.38 29.81 -3.43 34.14
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 SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
DEGREE DAYS
HEATING
YESTERDAY 2 2 0 0
MONTH TO DATE 16 18 -2 1
SINCE SEP 1 16 18 -2 1
SINCE JUL 1 23 27 -4 3
COOLING
YESTERDAY 0 3 -3 1
MONTH TO DATE 35 67 -32 54
SINCE SEP 1 35 67 -32 54
SINCE JAN 1 792 767 25 864
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NE (50)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 100 AM
LOWEST 68 400 PM
AVERAGE 84
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 1915
MINIMUM TEMPERATURE (F) 58 44 2013
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 626 AM EDT SUNSET 650 PM EDT
SEPTEMBER 18 2025.....SUNRISE 627 AM EDT SUNSET 648 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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