578
CXUS51 KOKX 011406
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
959 AM EDT WED OCT 01 2025

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             94   09/03/1973
 LOW              38   09/22/1997
                       09/28/1989
                       09/20/1979
HIGHEST           85   09/19         MM      MM       84  09/14
                       09/26
                                                          09/19
LOWEST            51   09/22         MM      MM       50  09/09
AVG. MAXIMUM    78.1               74.8     3.3     75.0
AVG. MINIMUM    61.4               58.9     2.5     58.6
MEAN            69.8               66.9     2.8     66.8
DAYS MAX >= 90     0                0.2    -0.2        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        7.50   1966
 MINIMUM        0.24   2024
TOTALS          1.58               3.60   -2.02     0.24
DAILY AVG.      0.05               0.12   -0.07     0.01
DAYS >= .01        9                8.6     0.4        5
DAYS >= .10        5                5.5    -0.5        1
DAYS >= .50        0                2.6    -2.6        0
DAYS >= 1.00       0                1.0    -1.0        0
GREATEST
 24 HR. TOTAL   0.80   09/06 TO 09/07               0.13  09/28 TO 09/28
 STORM TOTAL    0.41                                0.13
 (MM/DD(HH))            MM

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

DEGREE DAYS
HEATING TOTAL      7                 53     -46       18
 SINCE 7/1         7                 56     -49       MM
COOLING TOTAL    156                108      48       80
 SINCE 1/1      1084                872     212       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    23/200    DATE  09/05
                                23/200          09/06
HIGHEST GUST SPEED/DIRECTION    34/200    DATE  09/05
                                34/190          09/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.55
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       4
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      0
HAZE                      1

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

$$