Best year time to visit Johnston

General weather information about Johnston

Average annual temperature is 19.1 °C

Absolute maximum temperature: 40.0 °C

Absolute minimum temperature: -3.0 °C

Number of sunny days: 202 days

Number of rainy days: 163 days

Look at detailed online map of Johnston

* Weather data for Johnston United States is based on climate observations for 2026 year

Johnston air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)23.726.327.029.132.237.837.440.037.032.927.321.7
Average daytime temperature (°C)15.617.620.922.928.333.234.136.732.025.318.315.8
Average temperature (°C)10.611.514.616.622.226.728.430.325.719.512.810.0
Average night temperature (°C)6.87.29.811.716.921.223.725.220.815.18.35.6
Absolute minimum temperature (°C)-3.0-2.8-2.26.99.018.219.519.516.92.7-0.6-1.3

Johnston monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.211.012.013.013.914.314.113.412.411.410.510.0
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)6.46.88.37.710.511.811.511.810.38.17.27.5
Precipitation (mm)1511171681741305314060451205871
Sunny days171112131612162416202223
Rainy days141719171518157141188
Snow days000000000000

Johnston - weather forecast by months

Johnston weather in januaryJohnston weather in februaryJohnston weather in marchJohnston weather in aprilJohnston weather in mayJohnston weather in juneJohnston weather in julyJohnston weather in augustJohnston weather in septemberJohnston weather in octoberJohnston weather in novemberJohnston weather in december

Best time to visit Johnston:

The best time to visit Johnston during the most sunny months:

  • June — 11.8(h)
  • July — 11.5(h)
  • August — 11.8(h)

The largest precipitation sum in Johnston is at

  • January — 151(mm)
  • March — 168(mm)
  • April — 174(mm)
  • July — 140(mm)

    • Weather forecast in the closest to Johnston admin centers

    Weather forecast in the closest towns to Johnston

    Explore Johnston

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    Frequently asked questions

    When is the best time to visit Johnston?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Johnston.
    What is the weather like in Johnston?
    See average temperature, rainfall and daylight hours for Johnston by month in the table above.
    How many sunny days does Johnston have?
    The monthly weather statistics above show sunshine and rainfall patterns for Johnston throughout the year.