Sandown
New Hampshire, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Sandown, NH

January, the same as December, in Sandown, New Hampshire, is a freezing cold winter month, with average temperature ranging between min 18.9°F (-7.3°C) and max 31.3°F (-0.4°C). The coldest month is January, with an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 18.9°F (-7.3°C). Weather in January »

The last month of the winter, February, is a cold month in Sandown, New Hampshire, with average temperature ranging between max 33.6°F (0.9°C) and min 19.8°F (-6.8°C). In February, the average high-temperature is practically the same as in January - a cold 33.6°F (0.9°C). Weather in February »

The first month of the spring, March, is still a cold month in Sandown, New Hampshire, with average temperature ranging between min 27.3°F (-2.6°C) and max 40.6°F (4.8°C). In March, the average high-temperature slightly increases, from 33.6°F (0.9°C) in February, to a still wintry 40.6°F (4.8°C). Weather in March »

April is a cool spring month in Sandown, New Hampshire, with temperature in the range of an average low of 37.2°F (2.9°C) and an average high of 53.2°F (11.8°C). In Sandown, New Hampshire, the average high-temperature rises, from a cold 40.6°F (4.8°C) in March, to a fresh 53.2°F (11.8°C). Weather in April »

The last month of the spring, May, is a comfortable month in Sandown, New Hampshire, with average temperature varying between 64.6°F (18.1°C) and 46.9°F (8.3°C). In May, the average high-temperature rises, from a cool 53.2°F (11.8°C) in April, to a comfortable 64.6°F (18.1°C). Weather in May »

June, the first month of the summer, in Sandown, is a pleasant month, with average temperature fluctuating between 73°F (22.8°C) and 54.5°F (12.5°C). In June, the average high-temperature slightly increases, from a comfortable 64.6°F (18.1°C) in May, to an agreeable 73°F (22.8°C). Weather in June »

July in Sandown, New Hampshire, is a warm summer month, with average temperature fluctuating between 61.3°F (16.3°C) and 80.2°F (26.8°C). The warmest month is July, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 61.3°F (16.3°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Sandown, New Hampshire, with average temperature varying between 60.1°F (15.6°C) and 79°F (26.1°C). In Sandown, the average high-temperature is relatively the same as in July - a still warm 79°F (26.1°C). Weather in August »

September, the first month of the autumn, in Sandown, is still a pleasant month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 54.1°F (12.3°C). In Sandown, the average high-temperature marginally drops, from a moderately hot 79°F (26.1°C) in August, to an agreeable 71.2°F (21.8°C). Weather in September »

October, the same as September, in Sandown, New Hampshire, is another mild autumn month, with average temperature ranging between min 45.1°F (7.3°C) and max 59°F (15°C). In Sandown, the average high-temperature in October decreases, from an agreeable 71.2°F (21.8°C) in September, to a moderate 59°F (15°C). Weather in October »

The last month of the autumn, November, is also a frosty month in Sandown, New Hampshire, with average temperature varying between 34.2°F (1.2°C) and 47.1°F (8.4°C). In Sandown, the average high-temperature drops, from a moderate 59°F (15°C) in October, to a chilly 47.1°F (8.4°C). Weather in November »

The first month of the winter, December, is also a wintry month in Sandown, New Hampshire, with average temperature fluctuating between 26.2°F (-3.2°C) and 36.5°F (2.5°C). In Sandown, the average high-temperature in December drops, from a frosty 47.1°F (8.4°C) in November, to a wintry 36.5°F (2.5°C). Weather in December »

What is the coldest month in Sandown?

With an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 18.9°F (-7.3°C), January is the coldest month.

How many days does it rain in Sandown?

In Sandown, New Hampshire, during the entire year, the rain falls for 137.4 days and collects up to 28.15" (715mm) of precipitation.

When does it snow in Sandown?

Months with snowfall in Sandown, New Hampshire, are January through May, October through December.

How much does it snow in Sandown?

Throughout the year, there are 37 snowfall days, and 24.88" (632mm) of snow is accumulated.

When is the lowest UV index in Sandown?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sandown, New Hampshire.

What is the most humid month in Sandown?

February is the most humid month in Sandown, with an average relative humidity of 81%.

What is the snowiest month in Sandown?

The month with the most snowfall is February when snow falls for 8.8 days and typically aggregates up to 5.98" (152mm) of snow.

What is the month with the least sunshine in Sandown?

The month with the least sunshine in Sandown, New Hampshire, is February, with an average of 4.6h of sunshine.

What is the least humid month in Sandown?

The least humid month is April, with an average relative humidity of 73%.

When it does not snow in Sandown?

In Sandown snow does not fall in June through September.

When are the longest days in Sandown?

The month with the longest days in Sandown, New Hampshire, is June, with an average of 15.3h of daylight.

When is the highest UV index in Sandown?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Sandown?

With an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 61.3°F (16.3°C), July is the warmest month in Sandown.

What month has the most sunshine in Sandown?

With an average of 10.4h of sunshine, August has the most sunshine of the year in Sandown, New Hampshire.

What is the driest month in Sandown?

September is the month with the least rainfall in Sandown. Rain falls for 11.3 days and accumulates 1.5" (38mm) of precipitation.

What is the rainiest month in Sandown?

December is the month with the most rainfall. Rain falls for 9.5 days and accumulates 2.99" (76mm) of precipitation.

What is the month with the shortest days in Sandown?

The month with the shortest days in Sandown, New Hampshire, is December, with an average of 9.1h of daylight.
Average temperature - Sandown, NH
Average rainfall - Sandown, NH

The wettest month (with the highest rainfall) is December (2.99").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days - Sandown, NH

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (6.4 days).

Average snowfall - Sandown, NH
Average snowfall days - Sandown, NH

The month with the highest number of snowfall days is January (9.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Sandown, NH

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average UV index - Sandown, NH