761
CXUS51 KBOX 031236
CLMBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
836 AM EDT SAT OCT 03 2026

...................................

...THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            102   09/07/1881
 LOW              34   09/29/1914
                       09/26/1879
HIGHEST           87   09/10                          86
LOWEST            49   09/24                          51
AVG. MAXIMUM    70.6               73.1    -2.5
AVG. MINIMUM    58.6               58.2     0.4
MEAN            64.6               65.6    -1.0
DAYS MAX >= 90     0                0.8    -0.8
DAYS MAX <= 32     0                0.0     0.0
DAYS MIN <= 32     0                0.0     0.0
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.94   1933
 MINIMUM        0.21   1914
TOTALS          5.35               3.56    1.79
DAILY AVG.      0.18               0.12    0.06
DAYS >= .01       13                9.0     4.0
DAYS >= .10        8                6.0     2.0
DAYS >= .50        4                2.1     1.9
DAYS >= 1.00       3                0.8     2.2
GREATEST
 24 HR. TOTAL   2.02   09/26 TO 09/27

SNOWFALL (INCHES)
RECORDS
 TOTAL           0.0   MM
TOTALS           0.0                0.0     0.0
 LIQUID EQUIV   0.00
SINCE 7/1        0.0                0.0     0.0
DAYS >= TRACE      0                0.0     0.0
DAYS >= 1.0        0                0.0     0.0
GREATEST
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL     83                 71      12
 SINCE 7/1        83                 80       3
COOLING TOTAL     77                 91     -14
 SINCE 1/1       994                791     203
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              11.1
RESULTANT WIND SPEED/DIRECTION   5/020
HIGHEST WIND SPEED/DIRECTION    40/040    DATE  09/26
HIGHEST GUST SPEED/DIRECTION    57/040    DATE  09/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.65
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       6
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                      2

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$