Climate and monthly weather forecast
Swanzey, NH

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Weather in January

January, the same as December, in Swanzey, New Hampshire, is another subzero cold winter month, with an average temperature fluctuating between 15.1°F (-9.4°C) and 27.9°F (-2.3°C). Temperature readings reach their annual highs in January, averaging 27.9°F (-2.3°C) and a minimum average of 15.1°F (-9.4°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Swanzey, New Hampshire, with an average temperature ranging between max 31.1°F (-0.5°C) and min 16.5°F (-8.6°C). Swanzey's February average high-temperature settles at a still freezing cold 31.1°F (-0.5°C), showing a near match with the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Swanzey, is an icy month, with an average temperature fluctuating between 39.4°F (4.1°C) and 24.3°F (-4.3°C). March's onset witnesses a minor shift in the average high-temperature, moving from a subzero cold 31.1°F (-0.5°C) in February to a wintry 39.4°F (4.1°C). Weather in March »

Weather in April

April in Swanzey, New Hampshire, is a cool spring month, with temperature in the range of an average low of 35.1°F (1.7°C) and an average high of 52.9°F (11.6°C). A rise in the average high-temperature is observed during April, moving from a cold 39.4°F (4.1°C) in March to a fresh 52.9°F (11.6°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Swanzey, New Hampshire, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 66°F (18.9°C). Swanzey's transition into May is marked by a temperature shift, moving from a cool 52.9°F (11.6°C) in April to a comfortable 66°F (18.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Swanzey, New Hampshire, with an average temperature ranging between max 73.2°F (22.9°C) and min 52.5°F (11.4°C). June's arrival signals a modest temperature shift, moving from a refreshing 66°F (18.9°C) in May to an agreeable 73.2°F (22.9°C). Weather in June »

Weather in July

July in Swanzey, New Hampshire, is a warm summer month, with an average temperature varying between 58.6°F (14.8°C) and 79.9°F (26.6°C). Swanzey's temperatures tend to reach their peak averages in July, with a high of 79.9°F (26.6°C) and a low of 58.6°F (14.8°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Swanzey, New Hampshire, with an average temperature ranging between max 78.1°F (25.6°C) and min 56.8°F (13.8°C). The ushering in of August brings an average high-temperature of a still warm 78.1°F (25.6°C), closely mirroring the 79.9°F (26.6°C) of July. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Swanzey, New Hampshire, with an average temperature varying between 50.9°F (10.5°C) and 70°F (21.1°C). The arrival of September correlates with a minor temperature reduction, down from August's warm 78.1°F (25.6°C) to an agreeable 70°F (21.1°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Swanzey, New Hampshire, with an average temperature varying between 42.1°F (5.6°C) and 56.8°F (13.8°C). The shift to October brings a decrease in the average high-temperature, falling from an agreeable 70°F (21.1°C) in September to a moderate 56.8°F (13.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Swanzey, is also a frosty month, with temperature in the range of an average high of 44.4°F (6.9°C) and an average low of 31.3°F (-0.4°C). November's onset brings a slight change in high-temperatures, falling from a mild 56.8°F (13.8°C) in October to a frosty 44.4°F (6.9°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Swanzey, New Hampshire, with temperature in the range of an average low of 22.8°F (-5.1°C) and an average high of 33.4°F (0.8°C). With December's onset, the weather shows a temperature decrease, transitioning from a chilly 44.4°F (6.9°C) in November to a wintry 33.4°F (0.8°C). Weather in December »

Frequently asked questions

What is the coldest month?

The month of January sees the average lowest temperatures, reaching 27.9°F (-2.3°C) at the peak and 15.1°F (-9.4°C) at the low.

How many days does it rain?

In Swanzey, New Hampshire, during the entire year, the rain falls for 125.1 days and collects up to 11.69" (297mm) of precipitation.

When does it snow in Swanzey?

January through May, October through December are months with snowfall.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 9.2 days and typically aggregates up to 2.64" (67mm) of snow.

How much does it snow?

In Swanzey, during the entire year, snow falls for 39.8 days and aggregates up to 10.2" (259mm) of snow.

What are the months with the lowest UV index?

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

What is the most humid month?

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

What is the month with the least sunshine in Swanzey?

With an average of 4.4h of sunshine, February has the least sunshine of the year.

What is the driest month?

March is the month with the least rainfall. Rain falls for 10 days and accumulates 0.75" (19mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month?

With an average relative humidity of 74%, April is the least humid month.

When it does not snow?

In Swanzey, snow does not fall in June through September.

When are the longest days?

The month with the longest days is June, with an average of 15h and 18min of daylight.

What part of the year is the hottest in Swanzey?

Swanzey's July weather, marked by an average high temperature of 79.9°F (26.6°C) and an average low temperature of 58.6°F (14.8°C), is the warmest in the year.

What is the wettest month?

The month with the most rainfall is July, when the rain falls for 13.3 days and typically aggregates up to 1.3" (33mm) of precipitation.

When is the highest UV index?

July is the month with the highest UV index, with an average maximum UV index of 6.

What month has the most sunshine?

The month with the most sunshine is August, with an average of 10.3h of sunshine.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

Average temperature
Swanzey, NH

Average temperature - Swanzey, NH

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.9°F).

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure
Swanzey, NH

Average pressure - Swanzey, NH

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

Average wind speed
Swanzey, NH

Average wind speed - Swanzey, NH

The windiest months (with the highest average wind speed) are January, February and March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity
Swanzey, NH

Average humidity - Swanzey, NH

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).

Average rainfall
Swanzey, NH

Average rainfall - Swanzey, NH

The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.75").

Average rainfall days
Swanzey, NH

Average rainfall days - Swanzey, NH

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (6.3 days).

Average snowfall
Swanzey, NH

Average snowfall - Swanzey, NH

The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Swanzey, NH

Average snowfall days - Swanzey, NH

The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Swanzey, NH

Average daylight / Average sunshine - Swanzey, NH

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days
Swanzey, NH

Average sunshine days - Swanzey, NH

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (13.8 days).

Average UV index
Swanzey, NH

Average UV index - Swanzey, NH

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average visibility
Swanzey, NH

Average visibility - Swanzey, NH

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

Swanzey, New Hampshire, USA

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