Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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CDUS41 KBOX 120532
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
132 AM EDT SAT SEP 12 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 11 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 79 327 PM 99 1983 75 4 74
MINIMUM 63 1154 PM 40 1917 60 3 55
AVERAGE 71 67 4 65
PRECIPITATION (IN)
YESTERDAY 0.00 5.63 1954 0.11 -0.11 0.00
MONTH TO DATE 0.86 1.17 -0.31 1.43
SINCE SEP 1 0.86 1.17 -0.31 1.43
SINCE JAN 1 18.42 29.21 -10.79 26.38
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 0 1 -1 0
MONTH TO DATE 1 9 -8 10
SINCE SEP 1 1 9 -8 10
SINCE JUL 1 1 18 -17 17
COOLING
YESTERDAY 6 4 2 0
MONTH TO DATE 60 52 8 32
SINCE SEP 1 60 52 8 32
SINCE JAN 1 977 752 225 789
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NW (310)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 9.2
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 59 400 AM
LOWEST 30 300 PM
AVERAGE 45
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 93 1961
MINIMUM TEMPERATURE (F) 60 43 1875
SUNRISE AND SUNSET
SEPTEMBER 12 2026.....SUNRISE 621 AM EDT SUNSET 659 PM EDT
SEPTEMBER 13 2026.....SUNRISE 622 AM EDT SUNSET 657 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$