Johnston May Weather Averages

Iowa, United States of America

May Weather Averages for Johnston

High Temp21°C70°F
Low Temp11°C52°F
Avg Temp16°C61°F
Sunshine Hours183 hours 
Rainfall154.17 mm6.07 In
Rain days10 days 
Pressure1014 mb30 In

 

Johnston May Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200921°C / 70°F11°C / 52°F16°C / 60°F230 hours111.58 mm / 4.39 In8 days1015 mb / 30 In
201021°C / 70°F11°C / 51°F16°C / 61°F230 hours122.82 mm / 4.84 In7 days1014 mb / 30 In
201121°C / 69°F10°C / 51°F15°C / 60°F211 hours127.03 mm / 5.00 In9 days1011 mb / 30 In
201224°C / 76°F13°C / 56°F19°C / 66°F236 hours110.71 mm / 4.36 In7 days1013 mb / 30 In
201320°C / 67°F11°C / 51°F15°C / 59°F140 hours305.56 mm / 12.03 In14 days1013 mb / 30 In
201421°C / 70°F11°C / 51°F16°C / 61°F168 hours129.83 mm / 5.11 In11 days1014 mb / 30 In
201521°C / 71°F12°C / 54°F17°C / 62°F175 hours207.11 mm / 8.15 In17 days1016 mb / 30 In
201621°C / 69°F11°C / 52°F16°C / 61°F167 hours124.60 mm / 4.91 In11 days1015 mb / 30 In
201720°C / 69°F10°C / 51°F15°C / 60°F222 hours149.14 mm / 5.87 In8 days1011 mb / 30 In
201826°C / 78°F15°C / 60°F20°C / 68°F217 hours172.81 mm / 6.80 In10 days1013 mb / 30 In
201920°C / 68°F10°C / 50°F15°C / 59°F146 hours264.82 mm / 10.43 In13 days1012 mb / 30 In
202019°C / 66°F11°C / 51°F15°C / 59°F90 hours137.51 mm / 5.41 In12 days1016 mb / 30 In
202119°C / 66°F11°C / 52°F15°C / 59°F95 hours168.69 mm / 6.64 In14 days1018 mb / 31 In
202222°C / 71°F12°C / 54°F17°C / 62°F137 hours153.80 mm / 6.06 In7 days1011 mb / 30 In
202323°C / 74°F11°C / 53°F17°C / 63°F210 hours112.35 mm / 4.42 In8 days1016 mb / 30 In
202421°C / 70°F11°C / 52°F16°C / 61°F187 hours188.00 mm / 7.40 In8 days1010 mb / 30 In
202521°C / 70°F10°C / 51°F16°C / 60°F151 hours103.81 mm / 4.09 In2 days1015 mb / 30 In
202623°C / 73°F12°C / 53°F17°C / 63°F288 hours84.91 mm / 3.34 In12 days1014 mb / 30 In

Need more than one day of Johnston history?

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

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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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