Lake Sunapee weather live forecast

Today's maximum temperature in Lake Sunapee is expected to be 31°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 Sunday 17th August 2025 GMT

More about Lake Sunapee

Lake Sunapee by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for New Hampshire

Momondo: Best deals on hotels worldwide

  • Browse the best deals on hotel stays & compare prices
  • Check lowest rates by month & also by day of the week
  • Search by date or browse hotels by destination & map
Go to Momondo deal >>

View all Momondo offers

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 16th August 2025

Expect clear skies in Lake Sunapee, New Hampshire with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south-west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Clear skies
    clear skies
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Little or no wind of 6 kph from the South-West6
    kph wind from SW

Back to top

Lake Sunapee weather for Sunday 17th August 2025

Expect isolated thunderstorms in Lake Sunapee, New Hampshire with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 28% chance of some rain and a light breeze of 12 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 28% chance of some rain28
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 12 kph from the West12
    kph wind from W

Back to top

Lake Sunapee weather for Monday 18th August 2025

Expect broken clouds in Lake Sunapee, New Hampshire with a maximum temperature of 23°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north.

  • 23°C maximum temperature23
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 23°C wind chill23
    °C wind chill
  • Light breeze of 10 kph from the North10
    kph wind from N

Back to top

Lake Sunapee weather for Tuesday 19th August 2025

Expect broken clouds in Lake Sunapee, New Hampshire with a maximum temperature of 23°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-east.

  • 23°C maximum temperature23
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 7 kph from the South-East7
    kph wind from SE

Back to top

Lake Sunapee weather for Wednesday 20th August 2025

Expect cloudy with some rain in Lake Sunapee, New Hampshire with a maximum temperature of 20°C, maximum UV of 6 (High) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 58% chance of some rain and a light breeze of 8 kph from the south-east.

  • 20°C maximum temperature20
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 58% chance of some rain58
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 8 kph from the South-East8
    kph wind from SE

Back to top

Avalon Waterways: Top deals on 2026 river cruises

  • Book early & save on 2026 river cruises with Avalon Waterways
  • Filter deals by promotion, month, destination & more
  • Travel between 1st Jan & 31st Dec 2026 (inclusive)
Go to Avalon Waterways deal >>

Expires at 23:59 on Thursday 31st Dec 2026 · View all Avalon Waterways offers

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

Back to top

More about the USA

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^