Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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CDUS41 KBOX 120525
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
125 AM EDT MON MAY 12 2025
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR MAY 11 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 70 359 PM 91 1993 65 5 54
MINIMUM 53 1155 PM 33 1900 49 4 43
AVERAGE 62 57 5 49
PRECIPITATION (IN)
YESTERDAY 0.00 1.42 1989 0.10 -0.10 0.00
MONTH TO DATE 3.00 1.15 1.85 1.33
SINCE MAR 1 10.23 8.95 1.28 13.23
SINCE JAN 1 15.54 15.55 -0.01 21.52
SNOWFALL (IN)
YESTERDAY 0.0 T 1945 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 T 10.6 -10.6 0.1
SINCE JUL 1 28.1 49.2 -21.1 9.8
DEGREE DAYS
HEATING
YESTERDAY 3 8 -5 16
MONTH TO DATE 68 108 -40 124
SINCE MAR 1 1187 1432 -245 1305
SINCE JUL 1 4946 5370 -424 4790
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 6 3 3 0
SINCE MAR 1 12 7 5 0
SINCE JAN 1 12 7 5 0
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 13.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 69 1200 AM
LOWEST 17 700 PM
AVERAGE 43
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 88 1991
2001
MINIMUM TEMPERATURE (F) 49 33 1907
SUNRISE AND SUNSET
MAY 12 2025...........SUNRISE 526 AM EDT SUNSET 756 PM EDT
MAY 13 2025...........SUNRISE 524 AM EDT SUNSET 757 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$