Harmston weather

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

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Harmston weather averages

Check the Harmston 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 Harmston, Lincolnshire, England.

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Harmston weather by month

Check the weather for Harmston, Lincolnshire, England 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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Harmston weather in January

The average maximum daytime temperature in Harmston in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Harmston during January.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 1
  1°C min night temperature
• 56
  56 mm of monthly rainfall

On average 56 mm (2.2 inches) of rain normally falls in Harmston during January with rain falling on 18 days of the month.

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Harmston weather in February

The average maximum daytime temperature in Harmston in February is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Harmston during February.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 14
  14 days with some rainfall
• 1
  1°C min night temperature
• 42
  42 mm of monthly rainfall

On average 42 mm (1.7 inches) of rain normally falls in Harmston during February with rain falling on 14 days of the month.

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Harmston weather in March

The average maximum daytime temperature in Harmston in March is a cool 9°C (48°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 Harmston during March.

• 9
  9°C max day temperature
• 3
  3 hours of sunshine per day
• 16
  16 days with some rainfall
• 2
  2°C min night temperature
• 50
  50 mm of monthly rainfall

On average 50 mm (2 inches) of rain normally falls in Harmston during March with rain falling on 16 days of the month.

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Harmston weather in April

The average maximum daytime temperature in Harmston in April is a cool 12°C (54°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 Harmston during April.

• 12
  12°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 4
  4°C min night temperature
• 49
  49 mm of monthly rainfall

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

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Harmston weather in May

The average maximum daytime temperature in Harmston in May is a comfortable 16°C (61°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 Harmston during May.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 6
  6°C min night temperature
• 50
  50 mm of monthly rainfall

On average 50 mm (2 inches) of rain normally falls in Harmston during May with rain falling on 14 days of the month.

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Harmston weather in June

The average maximum daytime temperature in Harmston in June is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 7 hours of sunshine a day in Harmston during June.

• 18
  18°C max day temperature
• 7
  7 hours of sunshine per day
• 14
  14 days with some rainfall
• 9
  9°C min night temperature
• 57
  57 mm of monthly rainfall

On average 57 mm (2.2 inches) of rain normally falls in Harmston during June with rain falling on 14 days of the month.

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Harmston weather in July

The average maximum daytime temperature in Harmston in July is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 6 hours of sunshine a day in Harmston during July.

• 21
  21°C max day temperature
• 6
  6 hours of sunshine per day
• 11
  11 days with some rainfall
• 11
  11°C min night temperature
• 47
  47 mm of monthly rainfall

On average 47 mm (1.9 inches) of rain normally falls in Harmston during July with rain falling on 11 days of the month.

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Harmston weather in August

The average maximum daytime temperature in Harmston in August is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 6 hours of sunshine a day in Harmston during August.

• 21
  21°C max day temperature
• 6
  6 hours of sunshine per day
• 13
  13 days with some rainfall
• 11
  11°C min night temperature
• 56
  56 mm of monthly rainfall

On average 56 mm (2.2 inches) of rain normally falls in Harmston during August with rain falling on 13 days of the month.

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Harmston weather in September

The average maximum daytime temperature in Harmston in September is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 5 hours of sunshine a day in Harmston during September.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 13
  13 days with some rainfall
• 9
  9°C min night temperature
• 54
  54 mm of monthly rainfall

On average 54 mm (2.1 inches) of rain normally falls in Harmston during September with rain falling on 13 days of the month.

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Harmston weather in October

The average maximum daytime temperature in Harmston in October is a cool 13°C (55°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Harmston during October.

• 13
  13°C max day temperature
• 3
  3 hours of sunshine per day
• 16
  16 days with some rainfall
• 6
  6°C min night temperature
• 59
  59 mm of monthly rainfall

On average 59 mm (2.3 inches) of rain normally falls in Harmston during October with rain falling on 16 days of the month.

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Harmston weather in November

The average maximum daytime temperature in Harmston in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Harmston during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 16
  16 days with some rainfall
• 3
  3°C min night temperature
• 57
  57 mm of monthly rainfall

On average 57 mm (2.2 inches) of rain normally falls in Harmston during November with rain falling on 16 days of the month.

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Harmston weather in December

The average maximum daytime temperature in Harmston in December is a cold 7°C (45°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 Harmston during December.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 17
  17 days with some rainfall
• 2
  2°C min night temperature
• 63
  63 mm of monthly rainfall

On average 63 mm (2.5 inches) of rain normally falls in Harmston during December with rain falling on 17 days of the month.

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