Climate and monthly weather forecast
Londonderry, NH

Weather in January

January, like December, is another subzero cold winter month in Londonderry, New Hampshire, with an average temperature fluctuating between 18°F (-7.8°C) and 30.6°F (-0.8°C). The coldest month is January, with an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 18°F (-7.8°C). Weather in January »

Weather in February

February, the last month of the winter in Londonderry, is a wintry month, with an average temperature fluctuating between 33.3°F (0.7°C) and 18.9°F (-7.3°C). In February, the average high-temperature is almost the same as in January - a wintry 33.3°F (0.7°C). Weather in February »

Weather in March

March, the first month of the spring in Londonderry, is also a wintry month, with an average temperature varying between 41.2°F (5.1°C) and 26.4°F (-3.1°C). In March, the average high-temperature slightly increases from 33.3°F (0.7°C) in February to a still cold 41.2°F (5.1°C). Weather in March »

Weather in April

April in Londonderry, New Hampshire, is a cool spring month, with an average temperature varying between 37.4°F (3°C) and 55°F (12.8°C). In April, the average high-temperature rises from a wintry 41.2°F (5.1°C) in March to a fresh 55°F (12.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Londonderry, New Hampshire, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 47.1°F (8.4°C). In May, the average high-temperature rises from a cool 55°F (12.8°C) in April to a comfortable 66.9°F (19.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Londonderry, New Hampshire, with an average temperature ranging between min 54.5°F (12.5°C) and max 74.5°F (23.6°C). In Londonderry, the average high-temperature in June slightly increases from a comfortable 66.9°F (19.4°C) in May to a warm 74.5°F (23.6°C). Weather in June »

Weather in July

July, like June, in Londonderry, New Hampshire, is a moderately hot summer month, with an average temperature varying between 61°F (16.1°C) and 81.7°F (27.6°C). With an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 61°F (16.1°C), July is the warmest month. In July, the average heat index is calculated to be a tropical 86.9°F (30.5°C). Weather in July »

Weather in August

August, the last month of the summer in Londonderry, is also a moderately hot month, with an average temperature varying between 80.1°F (26.7°C) and 59.9°F (15.5°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 80.1°F (26.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Londonderry, New Hampshire, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 72.1°F (22.3°C). In September, the average high-temperature marginally drops from a moderately hot 80.1°F (26.7°C) in August to an agreeable 72.1°F (22.3°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Londonderry, New Hampshire, with an average temperature fluctuating between 44.6°F (7°C) and 59.2°F (15.1°C). In Londonderry, the average high-temperature in October decreases from an agreeable 72.1°F (22.3°C) in September to a mild 59.2°F (15.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Londonderry, is also a frosty month, with an average temperature fluctuating between 46.6°F (8.1°C) and 33.6°F (0.9°C). In Londonderry, the average high-temperature in November drops from a moderate 59.2°F (15.1°C) in October to a chilly 46.6°F (8.1°C). Weather in November »

Weather in December

December, the first month of the winter in Londonderry, is also a wintry month, with temperature in the range of an average low of 25.3°F (-3.7°C) and an average high of 36.3°F (2.4°C). In December, the average high-temperature drops from a frosty 46.6°F (8.1°C) in November to a wintry 36.3°F (2.4°C). Weather in December »
[Resources]

FAQ

What is the coldest month in Londonderry?

The coldest month in Londonderry is January, with an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 18°F (-7.8°C).

What is the driest month in Londonderry?

January is the month with the least rainfall in Londonderry. Rain falls for 4.1 days and accumulates 0.75" (19mm) of precipitation.

How much does it rain in Londonderry?

Throughout the year, there are 104.4 rainfall days, and 12.95" (329mm) of precipitation is accumulated.

When does it snow in Londonderry?

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

How much does it snow in Londonderry?

In Londonderry, New Hampshire, during the entire year, snow falls for 26.1 days and aggregates up to 11.54" (293mm) of snow.

When is the lowest UV index in Londonderry?

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

What is the most humid month in Londonderry?

With an average relative humidity of 81%, February is the most humid month.

What is the month with the least sunshine in Londonderry?

February has the least sunshine of the year in Londonderry, with an average of 4.6h of sunshine.

When is Daylight Saving Time (DST) in Londonderry?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Londonderry?

The least humid month is April, with an average relative humidity of 72%.

When it does not snow in Londonderry?

In Londonderry, New Hampshire, snow does not fall in June through September.

When are the longest days in Londonderry?

With an average of 15h and 17min of daylight, June has the longest days of the year in Londonderry, New Hampshire.

What is the month with the highest UV index in Londonderry?

The months with the highest UV index in Londonderry, New Hampshire, are June through August, with an average maximum UV index of 6.

What is the warmest month in Londonderry?

With an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 61°F (16.1°C), July is the warmest month in Londonderry.

What month has the most sunshine in Londonderry?

The month with the most sunshine in Londonderry, New Hampshire, is August, with an average of 10.4h of sunshine.

What is the rainiest month in Londonderry?

October is the month with the most rainfall in Londonderry, New Hampshire. Rain falls for 9.4 days and accumulates 1.38" (35mm) of precipitation.

What is the snowiest month in Londonderry?

The month with the most snowfall in Londonderry, New Hampshire, is December, when snow falls for 4 days and typically aggregates up to 2.99" (76mm) of snow.

What is the month with the shortest days in Londonderry?

The month with the shortest days is December, with an average of 9h and 5min of daylight.

Average pressure
Londonderry, NH

Average pressure - Londonderry, NH

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

[Resources]

Average wind speed
Londonderry, NH

Average wind speed - Londonderry, NH

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

[Resources]

Average rainfall
Londonderry, NH

Average rainfall - Londonderry, NH

The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").

[Resources]

Average rainfall days
Londonderry, NH

Average rainfall days - Londonderry, NH

The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).

[Resources]

Average snowfall
Londonderry, NH

Average snowfall - Londonderry, NH

The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days
Londonderry, NH

Average snowfall days - Londonderry, NH

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight / Average sunshine
Londonderry, NH

Average daylight / Average sunshine - Londonderry, NH

The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 5min).

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

[Resources]

Average sunshine days
Londonderry, NH

Average sunshine days - Londonderry, NH

The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).

[Resources]

Average UV index
Londonderry, NH

Average UV index - Londonderry, NH

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

[Resources]

Average visibility
Londonderry, NH

Average visibility - Londonderry, NH

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location