931
CDUS41 KBOX 200526
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
126 AM EDT WED MAY 20 2026
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 19 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 96R 200 PM 90 1949 67 29 64
1986
2017
MINIMUM 68 1224 AM 38 1882 51 17 50
AVERAGE 82 59 23 57
PRECIPITATION (IN)
YESTERDAY 0.20 1.55 1900 0.10 0.10 0.00
MONTH TO DATE 0.99 1.92 -0.93 3.35
SINCE MAR 1 6.10 9.72 -3.62 10.58
SINCE JAN 1 9.39 16.32 -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 8
MONTH TO DATE 126 168 -42 99
SINCE MAR 1 1341 1492 -151 1218
SINCE JUL 1 5468 5430 38 4977
COOLING
YESTERDAY 17 1 16 0
MONTH TO DATE 27 11 16 16
SINCE MAR 1 30 15 15 22
SINCE JAN 1 30 15 15 22
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 13.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 700 PM
LOWEST 29 100 PM
AVERAGE 59
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 91 1996
MINIMUM TEMPERATURE (F) 51 40 1892
SUNRISE AND SUNSET
MAY 20 2026...........SUNRISE 518 AM EDT SUNSET 804 PM EDT
MAY 21 2026...........SUNRISE 517 AM EDT SUNSET 805 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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