581
CDUS41 KBOX 210526
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
126 AM EDT MON SEP 21 2026
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 20 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 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)
YESTERDAY 0.10 2.82 1899 0.13 -0.03 0.00
MONTH TO DATE 1.80 2.28 -0.48 1.55
SINCE SEP 1 1.80 2.28 -0.48 1.55
SINCE JAN 1 19.36 30.32 -10.96 26.50
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 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
YESTERDAY 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)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SE (140)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 7.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1100 PM
LOWEST 64 200 AM
AVERAGE 82
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 94 1895
MINIMUM TEMPERATURE (F) 56 40 1904
1929
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 630 AM EDT SUNSET 643 PM EDT
SEPTEMBER 22 2026.....SUNRISE 631 AM EDT SUNSET 641 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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