Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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CDUS41 KBOX 180538
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
138 AM EDT MON AUG 18 2025
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR AUGUST 17 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 92 354 PM 97 1944 81 11 71
MINIMUM 68 1159 PM 51 1934 65 3 63
AVERAGE 80 73 7 67
PRECIPITATION (IN)
YESTERDAY T 1.92 1909 0.10 -0.10 0.00
MONTH TO DATE 0.52 1.85 -1.33 3.55
SINCE JUN 1 4.85 9.01 -4.16 8.98
SINCE JAN 1 24.64 26.66 -2.02 33.99
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 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 0
MONTH TO DATE 0 0 0 1
SINCE JUN 1 44 54 -10 8
SINCE JUL 1 0 4 -4 1
COOLING
YESTERDAY 15 8 7 2
MONTH TO DATE 136 147 -11 162
SINCE JUN 1 677 569 108 700
SINCE JAN 1 706 602 104 746
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 11.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 300 AM
LOWEST 45 300 PM
AVERAGE 68
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 95 2002
2009
MINIMUM TEMPERATURE (F) 65 53 1918
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 555 AM EDT SUNSET 740 PM EDT
AUGUST 19 2025........SUNRISE 556 AM EDT SUNSET 739 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$