Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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CDUS41 KBOX 210624
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
224 AM EDT THU AUG 21 2025
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR AUGUST 20 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 66 1250 PM 98 1937 80 -14 70
MINIMUM 56 738 PM 52 1882 65 -9 60
1896
1905
AVERAGE 61 72 -11 65
PRECIPITATION (IN)
YESTERDAY 0.24 2.10 1894 0.10 0.14 0.01
MONTH TO DATE 0.76 2.15 -1.39 3.70
SINCE JUN 1 5.09 9.31 -4.22 9.13
SINCE JAN 1 24.88 26.96 -2.08 34.14
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 4 0 4 0
MONTH TO DATE 5 0 5 1
SINCE JUN 1 49 54 -5 8
SINCE JUL 1 5 4 1 1
COOLING
YESTERDAY 0 8 -8 0
MONTH TO DATE 136 171 -35 169
SINCE JUN 1 677 593 84 707
SINCE JAN 1 706 626 80 753
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (70)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 1100 PM
LOWEST 61 100 PM
AVERAGE 75
..........................................................
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 2025........SUNRISE 558 AM EDT SUNSET 736 PM EDT
AUGUST 22 2025........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.
$$