Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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CDUS41 KBOX 130535
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
135 AM EDT SUN SEP 13 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 12 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 71 239 PM 93 1961 75 -4 68
MINIMUM 56 433 AM 43 1875 60 -4 58
AVERAGE 64 67 -3 63
PRECIPITATION (IN)
YESTERDAY 0.00 2.95 1960 0.11 -0.11 0.00
MONTH TO DATE 0.86 1.28 -0.42 1.43
SINCE SEP 1 0.86 1.28 -0.42 1.43
SINCE JAN 1 18.42 29.32 -10.90 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 1 1 0 2
MONTH TO DATE 2 10 -8 12
SINCE SEP 1 2 10 -8 12
SINCE JUL 1 2 19 -17 19
COOLING
YESTERDAY 0 3 -3 0
MONTH TO DATE 60 55 5 32
SINCE SEP 1 60 55 5 32
SINCE JAN 1 977 755 222 789
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 8.8
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 72 1000 PM
LOWEST 54 1200 AM
AVERAGE 63
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 93 1957
MINIMUM TEMPERATURE (F) 59 45 1911
1985
SUNRISE AND SUNSET
SEPTEMBER 13 2026.....SUNRISE 622 AM EDT SUNSET 657 PM EDT
SEPTEMBER 14 2026.....SUNRISE 623 AM EDT SUNSET 655 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$