552
CDUS41 KBOX 210737
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
337 AM EDT TUE APR 21 2026
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR APRIL 20 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 53 MM 89 1927 58 -5 70
1941
1976
MINIMUM 38 MM 21 1897 43 -5 48
AVERAGE 46 50 -4 59
PRECIPITATION (IN)
YESTERDAY 0.00 0.87 1874 0.11 -0.11 0.00
MONTH TO DATE 1.30 2.51 -1.21 2.22
SINCE MAR 1 4.94 6.68 -1.74 6.32
SINCE JAN 1 8.23 13.28 -5.05 11.63
SNOWFALL (IN)
YESTERDAY 0.0 1.0 1904 0.0 0.0 0.0
MONTH TO DATE T 1.5 -1.5 T
SINCE MAR 1 1.9 10.5 -8.6 T
SINCE JUL 1 62.8 49.1 13.7 28.1
DEGREE DAYS
HEATING
YESTERDAY 19 15 4 6
MONTH TO DATE 312 367 -55 352
SINCE MAR 1 1036 1195 -159 1049
SINCE JUL 1 5163 5133 30 4808
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 3 0 3 5
SINCE MAR 1 3 0 3 5
SINCE JAN 1 3 0 3 5
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 10.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 76 1200 AM
LOWEST 32 500 PM
AVERAGE 54
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 88 1957
MINIMUM TEMPERATURE (F) 43 21 1875
SUNRISE AND SUNSET
APRIL 21 2026.........SUNRISE 554 AM EDT SUNSET 733 PM EDT
APRIL 22 2026.........SUNRISE 552 AM EDT SUNSET 734 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page