Monthly weather forecast and climate
Charlestown, NH

Weather in January

January, the same as December, in Charlestown, New Hampshire, is another subzero cold winter month, with average temperature fluctuating between 14.5°F (-9.7°C) and 27.5°F (-2.5°C). The coldest month is January, with an average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 14.5°F (-9.7°C). Weather in January »

Weather in February

February, the last month of the winter, in Charlestown, is another freezing cold month, with temperature in the range of an average low of 15.4°F (-9.2°C) and an average high of 30.2°F (-1°C). In February, the average high-temperature is essentially the same as in January - a still subzero cold 30.2°F (-1°C). Weather in February »

Weather in March

March, the first month of the spring, in Charlestown, is a cold month, with average temperature ranging between min 23.5°F (-4.7°C) and max 38.7°F (3.7°C). In Charlestown, the average high-temperature in March slightly increases, from a freezing cold 30.2°F (-1°C) in February, to a cold 38.7°F (3.7°C). Weather in March »

Weather in April

April is a cool spring month in Charlestown, New Hampshire, with average temperature varying between 52°F (11.1°C) and 34.3°F (1.3°C). In Charlestown, the average high-temperature increases, from a wintry 38.7°F (3.7°C) in March, to a cool 52°F (11.1°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Charlestown, New Hampshire, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 45.1°F (7.3°C). In May, the average high-temperature rises, from a fresh 52°F (11.1°C) in April, to a comfortable 65.8°F (18.8°C). Weather in May »

Weather in June

June, the first month of the summer, in Charlestown, is an agreeable month, with average temperature varying between 73°F (22.8°C) and 51.6°F (10.9°C). In June, the average high-temperature marginally rises, from an enjoyable 65.8°F (18.8°C) in May, to an agreeable 73°F (22.8°C). Weather in June »

Weather in July

July in Charlestown, New Hampshire, is a warm summer month, with average temperature varying between 79.7°F (26.5°C) and 57.7°F (14.3°C). The warmest month is July, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 57.7°F (14.3°C). Weather in July »

Weather in August

August, the last month of the summer, in Charlestown, is also a moderately hot month, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 77.9°F (25.5°C). In August, the average high-temperature is almost the same as in July - a still warm 77.9°F (25.5°C). Weather in August »

Weather in September

September, the first month of the autumn, in Charlestown, is also an agreeable month, with average temperature ranging between min 50.4°F (10.2°C) and max 70.5°F (21.4°C). In September, the average high-temperature marginally drops, from a warm 77.9°F (25.5°C) in August, to an agreeable 70.5°F (21.4°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Charlestown, New Hampshire, with average temperature fluctuating between 56.7°F (13.7°C) and 41.5°F (5.3°C). In October, the average high-temperature decreases, from an agreeable 70.5°F (21.4°C) in September, to a moderate 56.7°F (13.7°C). Weather in October »

Weather in November

November, the last month of the autumn, in Charlestown, is another chilly month, with average temperature fluctuating between 30.9°F (-0.6°C) and 44.1°F (6.7°C). In November, the average high-temperature drops, from a moderate 56.7°F (13.7°C) in October, to a chilly 44.1°F (6.7°C). Weather in November »

Weather in December

December, the first month of the winter, in Charlestown, is still a cold month, with average temperature fluctuating between 22.3°F (-5.4°C) and 32.9°F (0.5°C). In December, the average high-temperature drops, from a frosty 44.1°F (6.7°C) in November, to a cold 32.9°F (0.5°C). Weather in December »
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FAQ

What is the coldest month in Charlestown?

January is the coldest month, with an average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 14.5°F (-9.7°C).

How many days does it rain in Charlestown?

In Charlestown, during the entire year, the rain falls for 113.5 days and collects up to 16.77" (426mm) of precipitation.

What is the driest month in Charlestown?

January and March are months with the least rain in Charlestown, New Hampshire, when the rain falls for 4.5 days and typically aggregates up to 1.06" (27mm) of rain.

When does it snow in Charlestown?

Months with snowfall in Charlestown are January through May, October through December.

How many days does it snow in Charlestown?

In Charlestown, New Hampshire, during the entire year, snow falls for 31 days, and aggregates up to 16.22" (412mm) of snow.

What is the month with the lowest UV index in Charlestown?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Charlestown.

What is the most humid month in Charlestown?

The most humid month in Charlestown, New Hampshire, is February, with an average relative humidity of 85%.

When does it snow the most in Charlestown?

February is the month with the most snowfall. Snow falls for 7.9 days and accumulates 4.69" (119mm) of snow.

What is the month with the least sunshine in Charlestown?

February has the least sunshine of the year in Charlestown, with an average of 4.4h of sunshine.

What is the least humid month in Charlestown?

The least humid month in Charlestown is April, with an average relative humidity of 74%.

What are the months with the highest UV index in Charlestown?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Charlestown.

When it does not snow in Charlestown?

In Charlestown snow does not fall in June through September.

When are the longest days in Charlestown?

With an average of 15.3h of daylight, June has the longest days of the year in Charlestown.

What is the warmest month in Charlestown?

The warmest month in Charlestown is July, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 57.7°F (14.3°C).

What month has the most sunshine in Charlestown?

August has the most sunshine of the year in Charlestown, with an average of 10.3h of sunshine.

What is the wettest month in Charlestown?

The month with the most rainfall in Charlestown, New Hampshire, is October when the rain falls for 11.4 days and typically aggregates up to 1.77" (45mm) of precipitation.

What is the month with the shortest days in Charlestown?

December has the shortest days of the year in Charlestown, New Hampshire, with an average of 9h of daylight.

Average temperature
Charlestown, NH

Average temperature - Charlestown, NH

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.5°F).

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

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Average pressure
Charlestown, NH

Average pressure - Charlestown, NH

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed
Charlestown, NH

Average wind speed - Charlestown, NH

The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average rainfall
Charlestown, NH

Average rainfall - Charlestown, NH

The wettest month (with the highest rainfall) is October (1.77").
The driest months (with the least rainfall) are January and March (1.06").

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Average rainfall days
Charlestown, NH

Average rainfall days - Charlestown, NH

The month with the highest number of rainy days is July (12.1 days).
The month with the least rainy days is January (4.5 days).

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Average snowfall
Charlestown, NH

Average snowfall - Charlestown, NH

The month with the highest snowfall is February (4.69").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Charlestown, NH

Average snowfall days - Charlestown, NH

The month with the highest number of snowfall days is February (7.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Charlestown, NH

Average daylight / Average sunshine - Charlestown, NH

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

The month with the most sunshine is August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.4h).

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Average sunshine days
Charlestown, NH

Average sunshine days - Charlestown, NH

The month with the most sunshine days is November (20.5 days).
Months with the least sunshine days are April and June (16 days).

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Average UV index
Charlestown, NH

Average UV index - Charlestown, NH

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average visibility
Charlestown, NH

Average visibility - Charlestown, NH

Months with the highest visibility are April and November (6mi).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

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