401
CXUS51 KBOX 011156
CLMBDL

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
756 AM EDT WED OCT 01 2025

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

...THE HARTFORD CT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1904 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            101   09/02/1953
 LOW              30   09/29/2000
                       09/20/1979
                       09/27/1978
HIGHEST           86   09/06                          89
LOWEST            43   09/21                          49
                       09/22
AVG. MAXIMUM    77.5               75.7     1.8
AVG. MINIMUM    53.8               53.8     0.0
MEAN            65.7               64.8     0.8
DAYS MAX >= 90     0                1.2    -1.2
DAYS MAX <= 32     0                0.0     0.0
DAYS MIN <= 32     0                0.1    -0.1
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       14.59   1938
 MINIMUM        0.20   1914
TOTALS          3.40               4.39   -0.99
DAILY AVG.      0.11               0.15   -0.04
DAYS >= .01        8                9.2    -1.2
DAYS >= .10        7                5.9     1.1
DAYS >= .50        3                2.7     0.3
DAYS >= 1.00       0                1.2    -1.2
GREATEST
 24 HR. TOTAL   1.19   09/06 TO 09/07

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

DEGREE DAYS
HEATING TOTAL     39                 93     -54
 SINCE 7/1        58                102     -44
COOLING TOTAL     66                 86     -20
 SINCE 1/1       837                811      26
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.2
RESULTANT WIND SPEED/DIRECTION   0/130
HIGHEST WIND SPEED/DIRECTION    28/190    DATE  09/06
HIGHEST GUST SPEED/DIRECTION    38/180    DATE  09/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.53
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       4
LIGHT RAIN                7     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      0
HAZE                      0

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

$$