388
CXUS51 KOKX 011400
CLMISP

NYCCLMISP 000
TTAA00 OKX 011354

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
1000 AM EDT THU OCT 01 2026

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2026

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           86   09/10         MM      MM       85  09/19
                                                          09/26
LOWEST            52   09/15         MM      MM       51  09/22
AVG. MAXIMUM    74.1               74.8    -0.7     78.1
AVG. MINIMUM    60.6               58.9     1.7     61.4
MEAN            67.4               66.9     0.5     69.8
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          8.76               3.60    5.16     1.58
DAILY AVG.      0.29               0.12    0.17     0.05
DAYS >= .01       12                8.6     3.4        9
DAYS >= .10        9                5.5     3.5        5
DAYS >= .50        4                2.6     1.4        0
DAYS >= 1.00       3                1.0     2.0        0
GREATEST
 24 HR. TOTAL   3.06   09/13 TO 09/13               0.80  09/06 TO 09/07
 STORM TOTAL    3.06                                0.41
 (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     30                 53     -23        7
 SINCE 7/1        30                 56     -26       MM
COOLING TOTAL    111                108       3      156
 SINCE 1/1       984                872     112       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
HIGHEST WIND SPEED/DIRECTION    37/030    DATE  09/26
HIGHEST GUST SPEED/DIRECTION    55/010    DATE  09/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.66
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       9
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     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.

$$