Islip September Weather Averages

New York, United States of America

September Weather Averages for Islip

High Temp23°C73°F
Low Temp18°C65°F
Avg Temp20°C69°F
Sunshine Hours209 hours 
Rainfall115.60 mm4.55 In
Rain days6 days 
Pressure1018 mb31 In

 

Islip September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200921°C / 70°F17°C / 63°F19°C / 67°F236 hours60.44 mm / 2.38 In2 days1018 mb / 31 In
201023°C / 73°F19°C / 66°F21°C / 69°F250 hours101.95 mm / 4.01 In5 days1014 mb / 30 In
201122°C / 71°F19°C / 65°F20°C / 68°F200 hours129.75 mm / 5.11 In10 days1016 mb / 30 In
201222°C / 72°F19°C / 66°F21°C / 69°F230 hours150.34 mm / 5.92 In7 days1016 mb / 30 In
201321°C / 70°F17°C / 62°F19°C / 66°F279 hours61.66 mm / 2.43 In5 days1016 mb / 30 In
201422°C / 72°F18°C / 64°F20°C / 68°F263 hours51.32 mm / 2.02 In5 days1018 mb / 31 In
201524°C / 74°F19°C / 67°F21°C / 71°F168 hours101.87 mm / 4.01 In5 days1018 mb / 31 In
201623°C / 73°F19°C / 67°F21°C / 70°F232 hours83.85 mm / 3.30 In9 days1019 mb / 31 In
201723°C / 73°F19°C / 66°F21°C / 70°F248 hours67.40 mm / 2.65 In6 days1016 mb / 30 In
201823°C / 74°F20°C / 68°F21°C / 71°F153 hours177.13 mm / 6.97 In12 days1021 mb / 31 In
201922°C / 72°F19°C / 66°F21°C / 69°F238 hours52.99 mm / 2.09 In3 days1019 mb / 31 In
202023°C / 74°F19°C / 66°F21°C / 70°F208 hours76.67 mm / 3.02 In4 days1019 mb / 31 In
202124°C / 75°F19°C / 66°F21°C / 70°F191 hours151.58 mm / 5.97 In7 days1016 mb / 30 In
202224°C / 75°F18°C / 64°F21°C / 69°F221 hours76.70 mm / 3.02 In4 days1017 mb / 30 In
202325°C / 76°F18°C / 64°F21°C / 69°F179 hours272.37 mm / 10.72 In7 days1017 mb / 31 In
202422°C / 72°F17°C / 63°F20°C / 68°F172 hours93.55 mm / 3.68 In3 days1019 mb / 31 In
202523°C / 74°F18°C / 64°F20°C / 69°F140 hours152.40 mm / 6.00 In5 days1019 mb / 31 In
202624°C / 75°F17°C / 62°F20°C / 68°F148 hours218.90 mm / 8.62 In13 days1017 mb / 31 In

Need more than one day of Islip history?

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Weather history near Islip

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Islip weather history: common questions

How far back does Islip weather history go?

Hourly historical weather is available from 1 January 2009. Choose a date above, or pick a month at the top of the page for long-term averages.

Can I download Islip historical weather as a file?

Yes. Buy historical weather data as daily or hourly CSV, yearly monthly averages or monthly climate averages. A free sample download is available.

Is there an API for historical weather?

Yes. The WeatherAPI.com History API returns hourly weather for any past date from 2010, as JSON or XML. Get a free API key.

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