342
CDUS41 KBOX 182133
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
533 PM EDT MON MAY 18 2026
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 18 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 70 1207 AM 95 2017 67 3 70
MINIMUM 59 413 AM 37 2002 51 8 59
AVERAGE 65 59 6 65
PRECIPITATION (IN)
TODAY 0.00 1.72 2007 0.10 -0.10 T
MONTH TO DATE 0.79 1.82 -1.03 3.35
SINCE MAR 1 5.90 9.62 -3.72 10.58
SINCE JAN 1 9.19 16.22 -7.03 15.89
SNOWFALL (IN)
TODAY 0.0 0.0 2000 0.0 0.0 0.0
2001
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
TODAY 0 7 -7 0
MONTH TO DATE 126 161 -35 91
SINCE MAR 1 1341 1485 -144 1210
SINCE JUL 1 5468 5423 45 4969
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 10 10 0 16
SINCE MAR 1 13 14 -1 22
SINCE JAN 1 13 14 -1 22
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 10.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 67 1200 PM
LOWEST 52 300 AM
AVERAGE 60
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 90 1949
1986
2017
MINIMUM TEMPERATURE (F) 51 38 1882
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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