Climatological Report (Monthly) Issued by NWS Upton, NY
000
CXUS51 KOKX 011804
CLMISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
203 PM EDT SUN OCT 01 2023
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2023
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 92 09/06 MM MM 88 09/01
09/07
LOWEST 50 09/17 MM MM 45 09/24
AVG. MAXIMUM 75.5 74.8 0.7 76.9
AVG. MINIMUM 61.6 58.9 2.7 59.5
MEAN 68.6 66.9 1.7 68.2
DAYS MAX >= 90 4 0.2 3.8 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 0.61 2019
TOTALS 6.78 3.60 3.18 2.89
DAILY AVG. 0.23 0.12 0.11 0.10
DAYS >= .01 10 8.6 1.4 7
DAYS >= .10 9 5.5 3.5 5
DAYS >= .50 4 2.6 1.4 4
DAYS >= 1.00 3 1.0 2.0 0
GREATEST
24 HR. TOTAL 2.18 09/28 TO 09/29 0.71 09/22 TO 09/22
STORM TOTAL 2.18 0.71
(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 44 53 -9 35
SINCE 7/1 44 56 -12 MM
COOLING TOTAL 158 108 50 140
SINCE 1/1 936 872 64 MM
................................................................
WIND (MPH)
AVERAGE WIND SPEED 8.5
HIGHEST WIND SPEED/DIRECTION 28/060 DATE 09/25
HIGHEST GUST SPEED/DIRECTION 40/060 DATE 09/25
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.59
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 11
NUMBER OF DAYS CLOUDY 11
AVERAGE RH (PERCENT) 78
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 5 RAIN 6
LIGHT RAIN 12 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 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$