Climate and monthly weather forecast
Andover, NH

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Weather in January

January, like December, is a freezing cold winter month in Andover, New Hampshire, with an average temperature ranging between max 25.9°F (-3.4°C) and min 12.7°F (-10.7°C). With its high average temperature of 25.9°F (-3.4°C) and a low of 12.7°F (-10.7°C), January is regarded as the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Andover, is also a subzero cold month, with an average temperature ranging between max 28.8°F (-1.8°C) and min 14.4°F (-9.8°C). As Andover welcomes February, the average high-temperature stabilizes at a still subzero cold 28.8°F (-1.8°C), showing little deviation from January's 25.9°F (-3.4°C). Weather in February »

Weather in March

March, the first month of the spring in Andover, is a cold month, with an average temperature ranging between max 37°F (2.8°C) and min 22.5°F (-5.3°C). Andover, New Hampshire, in March experiences a slight uptick in the average high-temperature, adjusting from February's subzero cold 28.8°F (-1.8°C) to an icy 37°F (2.8°C). Weather in March »

Weather in April

April is a fresh spring month in Andover, New Hampshire, with temperature in the range of an average low of 33.6°F (0.9°C) and an average high of 51.4°F (10.8°C). April signals a considerable rise in Andover's average high-temperature, advancing from a wintry 37°F (2.8°C) in March to a cool 51.4°F (10.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a refreshing month in Andover, New Hampshire, with an average temperature ranging between min 44.4°F (6.9°C) and max 64.9°F (18.3°C). May's arrival signals an increase in average high-temperatures, moving from April's cool 51.4°F (10.8°C) to a refreshing 64.9°F (18.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Andover, New Hampshire, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 72.1°F (22.3°C). June showcases a minor temperature ascent, adjusting from May's refreshing 64.9°F (18.3°C) to a pleasant 72.1°F (22.3°C). Weather in June »

Weather in July

July in Andover, New Hampshire, is a warm summer month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 57.6°F (14.2°C). The month of July, characterized by an average high of 79°F (26.1°C) and a low of 57.6°F (14.2°C), is recognized as the warmest. Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Andover, New Hampshire, with an average temperature ranging between max 77.2°F (25.1°C) and min 55.9°F (13.3°C). Andover's average high-temperature in August sits at a still warm 77.2°F (25.1°C), showing little difference from the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Andover, New Hampshire, with an average temperature ranging between max 69.1°F (20.6°C) and min 49.5°F (9.7°C). Andover in September undergoes a slight reduction in the average high-temperature, shifting from August's warm 77.2°F (25.1°C) to a pleasant 69.1°F (20.6°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Andover, New Hampshire, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 40.6°F (4.8°C). With the beginning of October, the average high-temperature shows a decrease, transitioning from an agreeable 69.1°F (20.6°C) in September to a mild 55.9°F (13.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Andover, New Hampshire, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 43.2°F (6.2°C). November weather is marked by a drop in the average high-temperature, falling from a moderate 55.9°F (13.3°C) in October to a chilly 43.2°F (6.2°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Andover, New Hampshire, with an average temperature ranging between min 21°F (-6.1°C) and max 31.5°F (-0.3°C). The start of December comes with a reduction in the average high-temperature, receding from a chilly 43.2°F (6.2°C) in November to a freezing cold 31.5°F (-0.3°C). Weather in December »
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

January, with its high-temperature average of 25.9°F (-3.4°C) and a low-temperature average of 12.7°F (-10.7°C), is the coldest month.

What is the most humid month?

The months with the highest humidity are January and February, with an average relative humidity of 86%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 4.3 days and accumulates 0.71" (18mm) of precipitation.

How much does it rain?

In Andover, during the entire year, the rain falls for 103.3 days and collects up to 12.52" (318mm) of precipitation.

When does it snow?

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

How many days does it snow?

Throughout the year, there are 43.2 snowfall days, and 14.49" (368mm) of snow is accumulated.

What is the snowiest month?

February is the month with the most snowfall in Andover. Snow falls for 10.1 days and accumulates 4.02" (102mm) of snow.

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 4h of sunshine.

When is the lowest UV index?

The months with the lowest UV index are February and December, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in Andover?

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?

April and May, with an average relative humidity of 75%, are the least humid months.

What is the month with the highest UV index?

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

When it does not snow in Andover?

June through September are months without snowfall.

When are the longest days?

With an average of 15h and 24min of daylight, June has the longest days of the year.

What is the warmest month?

In Andover, July is known for its average highest temperatures, reaching a high of 79°F (26.1°C) and a low of 57.6°F (14.2°C).

What month has the most sunshine?

The month with the most sunshine is August, with an average of 10.1h of sunshine.

What is the rainiest month?

The month with the most rainfall is October, when the rain falls for 9.7 days and typically aggregates up to 1.54" (39mm) of precipitation.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 0min of daylight.

Average temperature
Andover, NH

Average temperature - Andover, NH

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (25.9°F).

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).

Average pressure
Andover, NH

Average pressure - Andover, NH

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Andover, NH

Average wind speed - Andover, NH

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity
Andover, NH

Average humidity - Andover, NH

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (75%).

Average rainfall
Andover, NH

Average rainfall - Andover, NH

The wettest month (with the highest rainfall) is October (1.54").
The driest month (with the least rainfall) is January (0.71").

Average rainfall days
Andover, NH

Average rainfall days - Andover, NH

The month with the highest number of rainy days is July (11.6 days).
The month with the least rainy days is February (3.4 days).

Average snowfall
Andover, NH

Average snowfall - Andover, NH

The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Andover, NH

Average snowfall days - Andover, NH

The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Andover, NH

Average daylight / Average sunshine - Andover, NH

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

Average sunshine days
Andover, NH

Average sunshine days - Andover, NH

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is February (16.1 days).

Average UV index
Andover, NH

Average UV index - Andover, NH

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

Average visibility
Andover, NH

Average visibility - Andover, NH

The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).

Andover, New Hampshire, USA

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