Climatological Report (Daily)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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CDUS41 KBOX 202130
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
530 PM EDT MON JUL 20 2026
...................................
...THE BOSTON MA CLIMATE SUMMARY FOR JULY 20 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 82 115 PM 99 1991 83 -1 87
MINIMUM 64 514 AM 54 1879 67 -3 70
1890
AVERAGE 73 74 -1 79
PRECIPITATION (IN)
TODAY 0.00 1.78 1982 0.11 -0.11 0.20
MONTH TO DATE 1.82 2.08 -0.26 2.11
SINCE JUN 1 3.28 5.97 -2.69 3.43
SINCE JAN 1 13.77 23.62 -9.85 23.22
SNOWFALL (IN)
TODAY 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
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 14 50 -36 44
SINCE JUL 1 0 0 0 0
COOLING
TODAY 8 10 -2 14
MONTH TO DATE 247 181 66 234
SINCE JUN 1 471 319 152 424
SINCE JAN 1 532 352 180 453
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 7.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 56 400 AM
LOWEST 30 1200 PM
AVERAGE 43
..........................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 102 1977
MINIMUM TEMPERATURE (F) 67 52 1890
SUNRISE AND SUNSET
JULY 20 2026..........SUNRISE 525 AM EDT SUNSET 815 PM EDT
JULY 21 2026..........SUNRISE 526 AM EDT SUNSET 815 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$