ClimateForecastDecemberJanuary >>

Johnstone Climate by Month

The temperature in Johnstone can vary quite a bit throughout the year. Temperatures can be pleasant during the warmest months, and cold during the cooler months. It also has a notably wet climate with much precipitation. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

Visitors to Johnstone can expect significant temperature changes throughout the year. Average daytime temperatures range from a pleasant 19°C in July, the warmest time of the year, to a chilly 8°C during cooler months like December. At night, temperatures typically average around 2°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Johnstone is known for its substantial rain/snowfall, with annual precipitation reaching 1378 mm. Year-round, Johnstone has a balanced climate with minimal variation in precipitation. The difference between the wettest month, January, with 141 mm, and the driest month, May, with 88 mm, is minimal.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Johnstone. While May receives considerable daily sunshine with up to 6.3 hours, January marks the darkest time of the year, where sunshine is scarce with only 1.2 hours of sunlight per day.

Monthly hours of sunshine

Data from: Glasgow, Scotland (5 KM, 3 Miles).

Daily hours of sunshine

Data from: Glasgow, Scotland (5 KM, 3 Miles).

The best time of year to visit Johnstone in the United Kingdom

Other facts from our historical weather data:
  • Which is the warmest month in Johnstone?
    July has an average maximum temperature of 19°C and is the warmest month of the year.
  • Which is the coldest month in Johnstone?
    The coldest month is December with an average maximum temperature of 8°C.
  • Which is the wettest month in Johnstone?
    January tops the wettest month list with 141 mm of rainfall.
  • Which is the driest month in Johnstone?
    May is the driest month with 88 mm of precipitation.
  • Which is the sunniest month in Johnstone?
    May is the sunniest month with an average of 188 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Johnstone

    Wed   Dec 11
    0°C | -3°C
    NE 4 km/h
    broken clouds and no rain

    broken clouds and no rain

    Thu   Dec 12
    2°C | -3°C
    NE 4 km/h
    1.2 mm
    overcast and small chance of sleet

    overcast and small chance of sleet

    Fri   Dec 13
    4°C | 0°C
    SW 4 km/h
    broken clouds and no rain

    broken clouds and no rain