Mount Vernon September Weather Averages

Washington, United States of America

September Weather Averages for Mount Vernon

High Temp19°C65°F
Low Temp11°C52°F
Avg Temp15°C58°F
Sunshine Hours194 hours 
Rainfall96.62 mm3.80 In
Rain days7 days 
Pressure1016 mb30 In

 

Mount Vernon September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200920°C / 68°F11°C / 52°F15°C / 59°F249 hours107.22 mm / 4.22 In9 days1017 mb / 31 In
201017°C / 62°F12°C / 53°F14°C / 57°F158 hours198.53 mm / 7.82 In10 days1015 mb / 30 In
201119°C / 67°F12°C / 53°F15°C / 60°F237 hours70.02 mm / 2.76 In6 days1017 mb / 31 In
201219°C / 65°F11°C / 52°F14°C / 58°F319 hours8.32 mm / 0.33 In0 days1019 mb / 31 In
201318°C / 64°F12°C / 54°F15°C / 59°F185 hours235.93 mm / 9.29 In14 days1012 mb / 30 In
201419°C / 66°F12°C / 54°F16°C / 60°F218 hours80.79 mm / 3.18 In6 days1015 mb / 30 In
201518°C / 64°F10°C / 50°F14°C / 57°F204 hours55.98 mm / 2.20 In6 days1016 mb / 30 In
201618°C / 64°F10°C / 51°F14°C / 57°F237 hours67.89 mm / 2.67 In6 days1019 mb / 31 In
201720°C / 69°F12°C / 54°F16°C / 61°F242 hours54.90 mm / 2.16 In5 days1016 mb / 30 In
201818°C / 65°F11°C / 52°F14°C / 58°F191 hours117.23 mm / 4.62 In12 days1017 mb / 31 In
201918°C / 64°F12°C / 53°F14°C / 58°F127 hours166.73 mm / 6.56 In11 days1015 mb / 30 In
202020°C / 68°F13°C / 55°F16°C / 61°F216 hours81.48 mm / 3.21 In5 days1017 mb / 31 In
202118°C / 65°F11°C / 51°F14°C / 58°F161 hours162.70 mm / 6.41 In9 days1016 mb / 30 In
202221°C / 70°F12°C / 53°F16°C / 61°F237 hours5.50 mm / 0.22 In1 days1015 mb / 30 In
202318°C / 64°F10°C / 50°F13°C / 56°F161 hours54.59 mm / 2.15 In4 days1016 mb / 30 In
202417°C / 62°F11°C / 52°F14°C / 57°F123 hours52.27 mm / 2.06 In3 days1016 mb / 30 In
202517°C / 63°F12°C / 54°F15°C / 58°F69 hours144.00 mm / 5.67 In4 days1016 mb / 30 In
202619°C / 66°F10°C / 51°F14°C / 58°F149 hours75.10 mm / 2.96 In11 days1016 mb / 30 In

Need more than one day of Mount Vernon history?

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Weather history near Mount Vernon

Region

Washington

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Mount Vernon weather history: common questions

How far back does Mount Vernon 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 Mount Vernon 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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