Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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972
CDUS41 KBOX 212125
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
525 PM EDT MON JUL 21 2025
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR JULY 21 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 80 224 PM 102 1977 83 -3 88
MINIMUM 67 537 AM 52 1890 67 0 67
AVERAGE 74 74 0 78
PRECIPITATION (IN)
TODAY 0.00 2.33 1938 0.10 -0.10 0.00
MONTH TO DATE 2.11 2.18 -0.07 1.13
SINCE JUN 1 3.43 6.07 -2.64 5.17
SINCE JAN 1 23.22 23.72 -0.50 30.18
SNOWFALL (IN)
TODAY MM T 1954 0.0 MM 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 44 50 -6 7
SINCE JUL 1 0 0 0 0
COOLING
TODAY 9 10 -1 13
MONTH TO DATE 243 191 52 270
SINCE JUN 1 433 329 104 460
SINCE JAN 1 462 362 100 506
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 14.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 300 AM
LOWEST 30 400 PM
AVERAGE 57
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 103 1926
2011
MINIMUM TEMPERATURE (F) 67 55 1890
SUNRISE AND SUNSET
JULY 21 2025..........SUNRISE 526 AM EDT SUNSET 814 PM EDT
JULY 22 2025..........SUNRISE 527 AM EDT SUNSET 814 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$