Weather in Johnstone in August

General weather information about Johnstone

Average annual temperature is 9.6 °C

Absolute maximum temperature: 26.9 °C

Absolute minimum temperature: -5.9 °C

Number of sunny days: 87 days

Number of rainy days: 272 days

Number of snow days: 6 days

Look at detailed online map of Johnstone

* Weather data for Johnstone United Kingdom is based on climate observations for 2026 year

Johnstone air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)11.411.213.515.021.426.923.223.525.817.312.111.5
Average daytime temperature (°C)7.08.88.511.815.720.817.518.117.512.58.17.1
Average temperature (°C)4.76.45.27.811.716.014.514.814.09.85.25.2
Average night temperature (°C)2.33.31.63.77.511.011.411.310.77.02.43.0
Absolute minimum temperature (°C)-3.1-2.7-5.9-2.54.76.67.87.54.70.1-3.6-4.7

Johnstone monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.013.015.017.017.017.016.013.011.09.07.0
Daylight mean duration (h)7.79.611.914.216.317.516.915.012.810.48.37.1
Daylight minimum duration (h)7.08.010.013.015.017.016.013.011.09.07.06.0
Sunshine mean duration (h)3.23.45.48.28.911.810.49.67.14.63.91.8
Precipitation (mm)150871385562901758716017695201
Sunny days8114109141187113
Rainy days231724202216303022241925
Snow days003000000003

Johnstone - weather forecast by months

Johnstone weather in januaryJohnstone weather in februaryJohnstone weather in marchJohnstone weather in aprilJohnstone weather in mayJohnstone weather in juneJohnstone weather in julyJohnstone weather in augustJohnstone weather in septemberJohnstone weather in octoberJohnstone weather in novemberJohnstone weather in december

Best time to visit Johnstone:

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

  • April — 8.2(h)
  • May — 8.9(h)
  • June — 11.8(h)
  • July — 10.4(h)
  • August — 9.6(h)

Months with the longest average daylight duration in Johnstone:

  • May — 16.3(h)
  • June — 17.5(h)
  • July — 16.9(h)

The largest precipitation sum in Johnstone is at

  • July — 175(mm)
  • September — 160(mm)
  • October — 176(mm)
  • December — 201(mm)

    • Weather forecast in the closest to Johnstone admin centers

    Weather forecast in the closest towns to Johnstone

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    Frequently asked questions

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