Lake Sunapee weather live forecast

Today's maximum temperature in Lake Sunapee is expected to be 24°C. Select a day from the live weather forecast for Lake Sunapee, New Hampshire, USA for more weather parameters.

5-day weather forecast updated at 04:04 on Saturday 6th September 2025 GMT

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The 5-day weather forecast for New Hampshire (Lake Sunapee) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Lake Sunapee weather forecast by day

Below are the detailed weather forecasts for Lake Sunapee for the next 5 days.

Lake Sunapee weather for Saturday 6th September 2025

Expect isolated thunderstorms in Lake Sunapee, New Hampshire with a maximum temperature of 24°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 30-40 mm of rainfall expected with 99% chance of some rain and a light breeze of 10 kph from the south.

  • 24°C maximum temperature24
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 99% chance of some rain99
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 10 kph from the South10
    kph wind from S

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Lake Sunapee weather for Sunday 7th September 2025

Expect broken clouds in Lake Sunapee, New Hampshire with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the west.

  • 20°C maximum temperature20
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the West11
    kph wind from W

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Lake Sunapee weather for Monday 8th September 2025

Expect scattered clouds in Lake Sunapee, New Hampshire with a maximum temperature of 20°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

  • 20°C maximum temperature20
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 12 kph from the West12
    kph wind from W

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Lake Sunapee weather for Tuesday 9th September 2025

Expect scattered clouds in Lake Sunapee, New Hampshire with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-east.

  • 21°C maximum temperature21
    °C maximum temperature
  • 6°C minimum temperature6
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Light breeze of 8 kph from the South-East8
    kph wind from SE

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Lake Sunapee weather for Wednesday 10th September 2025

Expect broken clouds in Lake Sunapee, New Hampshire with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south.

  • 21°C maximum temperature21
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Little or no wind of 5 kph from the South5
    kph wind from S

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Metric (°C / mm)  |  Imperial (°F / inches)

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