Climatological Report (Daily)
Issued by NWS Boston, MA

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CDUS41 KBOX 132202
CLIBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
602 PM EDT THU AUG 13 2026

...................................

...THE BOSTON MA CLIMATE SUMMARY FOR AUGUST 13 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         86        MM 100    1944  81      5       88
  MINIMUM         70    656 AM  53    1902  66      4       69
  AVERAGE         78                        73      5       79

PRECIPITATION (IN)
  TODAY            T             2.13 1989   0.10  -0.10      T
  MONTH TO DATE    0.47                      1.43  -0.96     0.28
  SINCE JUN 1      6.56                      8.59  -2.03     4.61
  SINCE JAN 1     17.05                     26.24  -9.19    24.40

SNOWFALL (IN)
  TODAY            0.0           T    1994   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
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE JUN 1     14                        54    -40       44
  SINCE JUL 1      0                         4     -4        0

 COOLING
  TODAY           13                         8      5       14
  MONTH TO DATE  187                       115     72       95
  SINCE JUN 1    719                       537    182      636
  SINCE JAN 1    780                       570    210      665
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED    10.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           200 AM
 LOWEST     39           200 PM
 AVERAGE    59

..........................................................


THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   81       101      2002
 MINIMUM TEMPERATURE (F)   66        52      1882
                                             1964


SUNRISE AND SUNSET
AUGUST 13 2026........SUNRISE   549 AM EDT   SUNSET   748 PM EDT
AUGUST 14 2026........SUNRISE   550 AM EDT   SUNSET   747 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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