Wellesley September Weather Averages

Massachusetts, United States of America

September Weather Averages for Wellesley

High Temp23°C74°F
Low Temp14°C57°F
Avg Temp18°C65°F
Sunshine Hours203 hours 
Rainfall98.04 mm3.86 In
Rain days6 days 
Pressure1018 mb31 In

 

Wellesley September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200921°C / 70°F12°C / 54°F17°C / 62°F248 hours42.55 mm / 1.68 In5 days1018 mb / 31 In
201024°C / 75°F14°C / 58°F19°C / 66°F222 hours54.19 mm / 2.13 In6 days1014 mb / 30 In
201123°C / 74°F15°C / 58°F18°C / 65°F197 hours121.73 mm / 4.79 In10 days1017 mb / 31 In
201222°C / 72°F13°C / 55°F17°C / 63°F233 hours90.16 mm / 3.55 In9 days1016 mb / 30 In
201323°C / 73°F12°C / 54°F17°C / 63°F234 hours64.88 mm / 2.55 In5 days1015 mb / 30 In
201424°C / 74°F13°C / 56°F18°C / 64°F260 hours19.30 mm / 0.76 In3 days1019 mb / 31 In
201525°C / 77°F15°C / 59°F20°C / 67°F199 hours99.70 mm / 3.93 In4 days1018 mb / 31 In
201625°C / 76°F15°C / 59°F19°C / 67°F205 hours58.40 mm / 2.30 In6 days1019 mb / 31 In
201725°C / 77°F16°C / 60°F20°C / 67°F209 hours71.50 mm / 2.81 In6 days1016 mb / 30 In
201824°C / 75°F16°C / 61°F20°C / 67°F155 hours143.75 mm / 5.66 In7 days1022 mb / 31 In
201924°C / 75°F14°C / 57°F19°C / 65°F265 hours37.77 mm / 1.49 In6 days1019 mb / 31 In
202024°C / 75°F15°C / 58°F19°C / 66°F224 hours43.90 mm / 1.73 In5 days1019 mb / 31 In
202124°C / 74°F14°C / 58°F19°C / 66°F162 hours154.00 mm / 6.06 In9 days1016 mb / 30 In
202223°C / 73°F13°C / 55°F17°C / 63°F176 hours143.90 mm / 5.67 In5 days1016 mb / 30 In
202324°C / 75°F14°C / 57°F18°C / 65°F173 hours188.17 mm / 7.41 In5 days1018 mb / 31 In
202422°C / 71°F13°C / 55°F17°C / 63°F176 hours201.88 mm / 7.95 In5 days1020 mb / 31 In
202523°C / 73°F15°C / 58°F19°C / 66°F180 hours75.90 mm / 2.99 In4 days1019 mb / 31 In
202622°C / 71°F13°C / 55°F17°C / 63°F134 hours153.10 mm / 6.03 In12 days1018 mb / 31 In

Need more than one day of Wellesley history?

Download historical weather for Wellesley, or any other location, in CSV from January 2009 onwards. Ideal for research, insurance, energy, agriculture and machine-learning projects.

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Wellesley weather history: common questions

How far back does Wellesley 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 Wellesley 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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