194
CDUS41 KBOX 180834
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
434 AM EDT MON MAY 18 2026
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 17 2026
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)
YESTERDAY
MAXIMUM 90 MM 92 1977 67 23 76
2017
MINIMUM 59 MM 39 1882 51 8 61
AVERAGE 75 59 16 69
PRECIPITATION (IN)
YESTERDAY 0.02 1.88 1916 0.09 -0.07 T
MONTH TO DATE 0.79 1.72 -0.93 3.35
SINCE MAR 1 5.90 9.52 -3.62 10.58
SINCE JAN 1 9.19 16.12 -6.93 15.89
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 MAR 1 1.9 10.6 -8.7 T
SINCE JUL 1 62.8 49.2 13.6 28.1
DEGREE DAYS
HEATING
YESTERDAY 0 7 -7 0
MONTH TO DATE 126 154 -28 91
SINCE MAR 1 1341 1478 -137 1210
SINCE JUL 1 5468 5416 52 4969
COOLING
YESTERDAY 10 1 9 4
MONTH TO DATE 10 9 1 16
SINCE MAR 1 13 13 0 22
SINCE JAN 1 13 13 0 22
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION W (260)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 11.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 300 AM
LOWEST 25 500 PM
AVERAGE 53
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 95 2017
MINIMUM TEMPERATURE (F) 51 37 2002
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 520 AM EDT SUNSET 802 PM EDT
MAY 19 2026...........SUNRISE 519 AM EDT SUNSET 803 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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