806
CDUS41 KBOX 210534
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
134 AM EDT WED MAY 21 2025
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 20 2025
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)
YESTERDAY
MAXIMUM 57 1218 PM 91 1996 68 -11 60
MINIMUM 49 1159 PM 40 1892 51 -2 52
AVERAGE 53 60 -7 56
PRECIPITATION (IN)
YESTERDAY T 1.83 2023 0.11 -0.11 0.00
MONTH TO DATE 3.35 2.03 1.32 2.72
SINCE MAR 1 10.58 9.83 0.75 14.62
SINCE JAN 1 15.89 16.43 -0.54 22.91
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 T 10.6 -10.6 0.1
SINCE JUL 1 28.1 49.2 -21.1 9.8
DEGREE DAYS
HEATING
YESTERDAY 12 6 6 9
MONTH TO DATE 111 174 -63 192
SINCE MAR 1 1230 1498 -268 1373
SINCE JUL 1 4989 5436 -447 4858
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 16 12 4 0
SINCE MAR 1 22 16 6 0
SINCE JAN 1 22 16 6 0
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION N (0)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 11.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 900 PM
LOWEST 55 1100 AM
AVERAGE 71
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 93 1921
MINIMUM TEMPERATURE (F) 52 41 1907
SUNRISE AND SUNSET
MAY 21 2025...........SUNRISE 517 AM EDT SUNSET 805 PM EDT
MAY 22 2025...........SUNRISE 516 AM EDT SUNSET 806 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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