Forth weather

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

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Forth weather averages

Check the Forth 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 Forth, South Lanarkshire, Scotland.

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Forth weather by month

Check the weather for Forth, South Lanarkshire, 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

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Forth weather in January

The average maximum daytime temperature in Forth in January is a cold 5°C (41°F), while the average minimum night-time temperature is a cold -0°C (32°F). You can expect on average 1 hours of sunshine a day in Forth during January.

• 5
  5°C max day temperature
• 1
  1 hour of sunshine per day
• 21
  21 days with some rainfall
• -0
  -0°C min night temperature
• 95
  95 mm of monthly rainfall

On average 95 mm (3.7 inches) of rain normally falls in Forth during January with rain falling on 21 days of the month.

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Forth weather in February

The average maximum daytime temperature in Forth in February is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 0°C (32°F). You can expect on average 2 hours of sunshine a day in Forth during February.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 17
  17 days with some rainfall
• 0
  0°C min night temperature
• 68
  68 mm of monthly rainfall

On average 68 mm (2.7 inches) of rain normally falls in Forth during February with rain falling on 17 days of the month.

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Forth weather in March

The average maximum daytime temperature in Forth in March is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 3 hours of sunshine a day in Forth during March.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 1
  1°C min night temperature
• 78
  78 mm of monthly rainfall

On average 78 mm (3.1 inches) of rain normally falls in Forth during March with rain falling on 20 days of the month.

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Forth weather in April

The average maximum daytime temperature in Forth in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 5 hours of sunshine a day in Forth during April.

• 11
  11°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 3
  3°C min night temperature
• 49
  49 mm of monthly rainfall

On average 49 mm (1.9 inches) of rain normally falls in Forth during April with rain falling on 16 days of the month.

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Forth weather in May

The average maximum daytime temperature in Forth in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 5 hours of sunshine a day in Forth during May.

• 14
  14°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 5
  5°C min night temperature
• 52
  52 mm of monthly rainfall

On average 52 mm (2 inches) of rain normally falls in Forth during May with rain falling on 16 days of the month.

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Forth weather in June

The average maximum daytime temperature in Forth in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 6 hours of sunshine a day in Forth during June.

• 17
  17°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 8
  8°C min night temperature
• 55
  55 mm of monthly rainfall

On average 55 mm (2.2 inches) of rain normally falls in Forth during June with rain falling on 16 days of the month.

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Forth weather in July

The average maximum daytime temperature in Forth in July is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Forth during July.

• 19
  19°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 10
  10°C min night temperature
• 62
  62 mm of monthly rainfall

On average 62 mm (2.4 inches) of rain normally falls in Forth during July with rain falling on 16 days of the month.

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Forth weather in August

The average maximum daytime temperature in Forth in August is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Forth during August.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 17
  17 days with some rainfall
• 10
  10°C min night temperature
• 75
  75 mm of monthly rainfall

On average 75 mm (3 inches) of rain normally falls in Forth during August with rain falling on 17 days of the month.

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Forth weather in September

The average maximum daytime temperature in Forth in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 4 hours of sunshine a day in Forth during September.

• 16
  16°C max day temperature
• 4
  4 hours of sunshine per day
• 18
  18 days with some rainfall
• 8
  8°C min night temperature
• 87
  87 mm of monthly rainfall

On average 87 mm (3.4 inches) of rain normally falls in Forth during September with rain falling on 18 days of the month.

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Forth weather in October

The average maximum daytime temperature in Forth in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 3 hours of sunshine a day in Forth during October.

• 12
  12°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 5
  5°C min night temperature
• 94
  94 mm of monthly rainfall

On average 94 mm (3.7 inches) of rain normally falls in Forth during October with rain falling on 20 days of the month.

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Forth weather in November

The average maximum daytime temperature in Forth in November 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 2 hours of sunshine a day in Forth during November.

• 8
  8°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 2
  2°C min night temperature
• 101
  101 mm of monthly rainfall

On average 101 mm (4 inches) of rain normally falls in Forth during November with rain falling on 20 days of the month.

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Forth weather in December

The average maximum daytime temperature in Forth in December is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 0°C (32°F). You can expect on average 1 hours of sunshine a day in Forth during December.

• 6
  6°C max day temperature
• 1
  1 hour of sunshine per day
• 20
  20 days with some rainfall
• 0
  0°C min night temperature
• 95
  95 mm of monthly rainfall

On average 95 mm (3.7 inches) of rain normally falls in Forth during December with rain falling on 20 days of the month.

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