Johnstone weather

The Johnstone weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Johnstone, Renfrewshire, Scotland in 2026/2027.

• Johnstone weather averages
• Johnstone weather by month
• Back to Renfrewshire
• Back to Scotland

Johnstone weather averages

Check the Johnstone weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Johnstone, Renfrewshire, Scotland.

Back to top

Johnstone weather by month

Check the weather for Johnstone, Renfrewshire, Scotland for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

Back to top

Johnstone weather in January

The average maximum daytime temperature in Johnstone in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Johnstone during January.

• 6
  6°C max day temperature
• 1
  1 hour of sunshine per day
• 22
  22 days with some rainfall
• 2
  2°C min night temperature
• 171
  171 mm of monthly rainfall

On average 171 mm (6.7 inches) of rain normally falls in Johnstone during January with rain falling on 22 days of the month.

Back to months

Johnstone weather in February

The average maximum daytime temperature in Johnstone in February is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Johnstone during February.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 2
  2°C min night temperature
• 118
  118 mm of monthly rainfall

On average 118 mm (4.6 inches) of rain normally falls in Johnstone during February with rain falling on 19 days of the month.

Back to months

Johnstone weather in March

The average maximum daytime temperature in Johnstone in March is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Johnstone during March.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 2
  2°C min night temperature
• 131
  131 mm of monthly rainfall

On average 131 mm (5.2 inches) of rain normally falls in Johnstone during March with rain falling on 20 days of the month.

Back to months

Johnstone weather in April

The average maximum daytime temperature in Johnstone in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 5 hours of sunshine a day in Johnstone during April.

• 11
  11°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 4
  4°C min night temperature
• 84
  84 mm of monthly rainfall

On average 84 mm (3.3 inches) of rain normally falls in Johnstone during April with rain falling on 16 days of the month.

Back to months

Johnstone weather in May

The average maximum daytime temperature in Johnstone in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Johnstone during May.

• 14
  14°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 6
  6°C min night temperature
• 75
  75 mm of monthly rainfall

On average 75 mm (3 inches) of rain normally falls in Johnstone during May with rain falling on 16 days of the month.

Back to months

Johnstone weather in June

The average maximum daytime temperature in Johnstone in June is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 6 hours of sunshine a day in Johnstone during June.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 9
  9°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Johnstone during June with rain falling on 16 days of the month.

Back to months

Johnstone weather in July

The average maximum daytime temperature in Johnstone in July is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Johnstone during July.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 17
  17 days with some rainfall
• 11
  11°C min night temperature
• 95
  95 mm of monthly rainfall

On average 95 mm (3.7 inches) of rain normally falls in Johnstone during July with rain falling on 17 days of the month.

Back to months

Johnstone weather in August

The average maximum daytime temperature in Johnstone in August is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Johnstone during August.

• 17
  17°C max day temperature
• 5
  5 hours of sunshine per day
• 18
  18 days with some rainfall
• 11
  11°C min night temperature
• 124
  124 mm of monthly rainfall

On average 124 mm (4.9 inches) of rain normally falls in Johnstone during August with rain falling on 18 days of the month.

Back to months

Johnstone weather in September

The average maximum daytime temperature in Johnstone in September is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 4 hours of sunshine a day in Johnstone during September.

• 15
  15°C max day temperature
• 4
  4 hours of sunshine per day
• 20
  20 days with some rainfall
• 9
  9°C min night temperature
• 154
  154 mm of monthly rainfall

On average 154 mm (6.1 inches) of rain normally falls in Johnstone during September with rain falling on 20 days of the month.

Back to months

Johnstone weather in October

The average maximum daytime temperature in Johnstone in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 2 hours of sunshine a day in Johnstone during October.

• 12
  12°C max day temperature
• 2
  2 hours of sunshine per day
• 22
  22 days with some rainfall
• 7
  7°C min night temperature
• 160
  160 mm of monthly rainfall

On average 160 mm (6.3 inches) of rain normally falls in Johnstone during October with rain falling on 22 days of the month.

Back to months

Johnstone weather in November

The average maximum daytime temperature in Johnstone in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 2 hours of sunshine a day in Johnstone during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 22
  22 days with some rainfall
• 4
  4°C min night temperature
• 165
  165 mm of monthly rainfall

On average 165 mm (6.5 inches) of rain normally falls in Johnstone during November with rain falling on 22 days of the month.

Back to months

Johnstone weather in December

The average maximum daytime temperature in Johnstone in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 1 hours of sunshine a day in Johnstone during December.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 23
  23 days with some rainfall
• 3
  3°C min night temperature
• 165
  165 mm of monthly rainfall

On average 165 mm (6.5 inches) of rain normally falls in Johnstone during December with rain falling on 23 days of the month.

Back to months