Johnston September Weather Averages

Iowa, United States of America

September Weather Averages for Johnston

High Temp26°C78°F
Low Temp14°C57°F
Avg Temp20°C67°F
Sunshine Hours241 hours 
Rainfall111.00 mm4.37 In
Rain days7 days 
Pressure1016 mb30 In

 

Johnston September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200923°C / 74°F12°C / 54°F17°C / 63°F263 hours68.82 mm / 2.71 In4 days1018 mb / 31 In
201023°C / 73°F13°C / 55°F18°C / 64°F222 hours117.38 mm / 4.62 In6 days1015 mb / 30 In
201121°C / 70°F11°C / 51°F16°C / 60°F250 hours40.00 mm / 1.57 In4 days1017 mb / 31 In
201224°C / 75°F11°C / 52°F17°C / 63°F279 hours46.88 mm / 1.85 In5 days1016 mb / 30 In
201327°C / 80°F14°C / 58°F20°C / 69°F279 hours57.44 mm / 2.26 In6 days1014 mb / 30 In
201422°C / 72°F12°C / 54°F17°C / 63°F209 hours122.91 mm / 4.84 In10 days1017 mb / 31 In
201526°C / 79°F16°C / 60°F21°C / 69°F239 hours95.23 mm / 3.75 In7 days1016 mb / 30 In
201626°C / 78°F15°C / 60°F20°C / 68°F248 hours147.44 mm / 5.80 In8 days1017 mb / 31 In
201728°C / 82°F15°C / 59°F21°C / 70°F295 hours43.10 mm / 1.70 In3 days1016 mb / 30 In
201823°C / 74°F15°C / 58°F19°C / 66°F200 hours228.51 mm / 9.00 In12 days1018 mb / 31 In
201926°C / 80°F17°C / 62°F21°C / 70°F237 hours197.34 mm / 7.77 In10 days1014 mb / 30 In
202024°C / 75°F13°C / 55°F18°C / 64°F240 hours96.99 mm / 3.82 In7 days1017 mb / 31 In
202129°C / 85°F15°C / 60°F22°C / 72°F291 hours44.50 mm / 1.75 In2 days1013 mb / 30 In
202228°C / 82°F14°C / 58°F21°C / 69°F263 hours45.99 mm / 1.81 In4 days1016 mb / 30 In
202331°C / 88°F14°C / 57°F22°C / 72°F242 hours78.33 mm / 3.08 In3 days1015 mb / 30 In
202429°C / 84°F14°C / 57°F21°C / 70°F292 hours44.47 mm / 1.75 In3 days1016 mb / 30 In
202526°C / 80°F15°C / 60°F21°C / 69°F170 hours257.00 mm / 10.12 In5 days1016 mb / 30 In
202625°C / 77°F17°C / 63°F21°C / 69°F111 hours265.69 mm / 10.46 In23 days1016 mb / 30 In

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Weather history near Johnston

Region

Iowa

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Johnston weather history: common questions

How far back does Johnston 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 Johnston 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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