620
CDUS41 KBOX 202122
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
522 PM EDT SUN SEP 20 2026
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 20 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 63 348 PM 97 1983 72 -9 65
MINIMUM 55 217 AM 42 1929 57 -2 54
1964
1979
AVERAGE 59 64 -5 60
PRECIPITATION (IN)
TODAY T 2.82 1899 0.13 -0.13 0.00
MONTH TO DATE 1.70 2.28 -0.58 1.55
SINCE SEP 1 1.70 2.28 -0.58 1.55
SINCE JAN 1 19.26 30.32 -11.06 26.50
SNOWFALL (IN)
TODAY 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
TODAY 6 3 3 5
MONTH TO DATE 20 28 -8 23
SINCE SEP 1 20 28 -8 23
SINCE JUL 1 20 37 -17 30
COOLING
TODAY 0 2 -2 0
MONTH TO DATE 77 76 1 45
SINCE SEP 1 77 76 1 45
SINCE JAN 1 994 776 218 802
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 8.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 300 PM
LOWEST 64 200 AM
AVERAGE 71
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 94 1895
MINIMUM TEMPERATURE (F) 56 40 1904
1929
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 629 AM EDT SUNSET 645 PM EDT
SEPTEMBER 21 2026.....SUNRISE 630 AM EDT SUNSET 643 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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