Climatological Report (Monthly)
Issued by NWS Upton, NY

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478
CXUS51 KOKX 012227
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
626 PM EDT FRI AUG 01 2025

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF JULY 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            104   07/03/1966
 LOW              49   07/02/1965
HIGHEST           96   07/29         MM      MM       93  07/16
                       07/30
LOWEST            63   07/23         MM      MM       61  07/01
                                                          07/03
AVG. MAXIMUM    85.7               82.8     2.9     83.8
AVG. MINIMUM    71.4               67.3     4.1     70.0
MEAN            78.5               75.0     3.5     76.9
DAYS MAX >= 90     7                4.1     2.9        3
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        8.36   1984
 MINIMUM        0.59   1966
TOTALS          5.64               3.26    2.38     2.55
DAILY AVG.      0.18               0.11    0.07     0.08
DAYS >= .01       12                9.1     2.9       11
DAYS >= .10        6                5.5     0.5        6
DAYS >= .50        3                2.2     0.8        3
DAYS >= 1.00       2                0.8     1.2        0
GREATEST
 24 HR. TOTAL   2.93   07/31 TO 07/31               0.95  07/28 TO 07/29
 STORM TOTAL    2.93                                0.93
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   1999
 24 HR TOTAL       T   1999
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      0                  1      -1        0
 SINCE 7/1         0                  0       0       MM
COOLING TOTAL    429                312     117      378
 SINCE 1/1       681                493     188       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.9
HIGHEST WIND SPEED/DIRECTION    36/340    DATE  07/03
HIGHEST GUST SPEED/DIRECTION    46/330    DATE  07/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.58
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       5
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      1
HAZE                      6

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

$$