161
CDUS41 KBOX 110513
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
113 AM EDT THU SEP 11 2025
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 10 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 MM 95 1931 75 -7 79
MINIMUM 57 MM 41 1883 60 -3 61
AVERAGE 63 68 -5 70
PRECIPITATION (IN)
YESTERDAY 0.00 4.71 1999 0.11 -0.11 0.00
MONTH TO DATE 1.43 1.06 0.37 T
SINCE SEP 1 1.43 1.06 0.37 T
SINCE JAN 1 26.38 29.10 -2.72 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 1 1 0
MONTH TO DATE 10 8 2 1
SINCE SEP 1 10 8 2 1
SINCE JUL 1 17 17 0 3
COOLING
YESTERDAY 0 4 -4 5
MONTH TO DATE 32 48 -16 31
SINCE SEP 1 32 48 -16 31
SINCE JAN 1 789 748 41 841
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NE (30)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 9.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 200 AM
LOWEST 68 1100 AM
AVERAGE 79
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 99 1983
MINIMUM TEMPERATURE (F) 60 40 1917
SUNRISE AND SUNSET
SEPTEMBER 11 2025.....SUNRISE 620 AM EDT SUNSET 700 PM EDT
SEPTEMBER 12 2025.....SUNRISE 621 AM EDT SUNSET 659 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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