Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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CDUS41 KBOX 210546
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
146 AM EDT FRI AUG 21 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR AUGUST 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 85 1142 AM 98 1937 80 5 66
MINIMUM 65 1049 PM 52 1882 65 0 56
1896
1905
AVERAGE 75 72 3 61
PRECIPITATION (IN)
YESTERDAY 0.07 2.10 1894 0.10 -0.03 0.24
MONTH TO DATE 0.59 2.15 -1.56 0.76
SINCE JUN 1 6.68 9.31 -2.63 5.09
SINCE JAN 1 17.17 26.96 -9.79 24.88
SNOWFALL (IN)
YESTERDAY 0.0 T 1951 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 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 0 0 4
MONTH TO DATE 0 0 0 5
SINCE JUN 1 14 54 -40 49
SINCE JUL 1 0 4 -4 5
COOLING
YESTERDAY 10 8 2 0
MONTH TO DATE 248 171 77 136
SINCE JUN 1 780 593 187 677
SINCE JAN 1 841 626 215 706
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION N (20)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 8.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 1100 PM
LOWEST 48 1200 PM
AVERAGE 66
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 97 1955
MINIMUM TEMPERATURE (F) 65 52 1876
1882
SUNRISE AND SUNSET
AUGUST 21 2026........SUNRISE 558 AM EDT SUNSET 736 PM EDT
AUGUST 22 2026........SUNRISE 559 AM EDT SUNSET 734 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$