August weather forecast
Londonderry, NH

Weather in August

August, the last month of the summer in Londonderry, is another warm month, with an average temperature varying between 59.9°F (15.5°C) and 80.1°F (26.7°C).

Temperature

In August, the average high-temperature is essentially the same as in July - a still warm 80.1°F (26.7°C). In Londonderry, in August, the average low-temperature is 59.9°F (15.5°C).

Humidity

In August, the average relative humidity is 75%.

Rainfall

In Londonderry, during August, the rain falls for 10.4 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Londonderry, during the entire year, the rain falls for 104.4 days and collects up to 12.95" (329mm) of precipitation.

Snowfall

June through September are months without snowfall in Londonderry.

Daylight

In Londonderry, the average length of the day in August is 13h and 53min.
On the first day of the month, sunrise is at 5:36 am and sunset at 8:06 pm. On the last day of August, in Londonderry, sunrise is at 6:09 am and sunset at 7:22 pm EDT.

Sunshine

With an average of 10.4h of sunshine, August has the most sunshine of the year in Londonderry.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the temperature in August in Londonderry?

In August, in Londonderry, New Hampshire, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 59.9°F (15.5°C). in July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 86°F (30°C).

What is the average humidity in August in Londonderry?

The average relative humidity in August in Londonderry, New Hampshire, is 75%.

How many days does it rain in August in Londonderry?

In August, in Londonderry, the rain falls for 10.4 days. Throughout August, 1.1" (28mm) of precipitation is accumulated.

When it does not snow in Londonderry?

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

What is the average length of the day in August in Londonderry?

In August, the average day length is 13h and 53min.

What time are sunrise and sunset in August in Londonderry?

On the first day of August in Londonderry, New Hampshire, sunrise is at 5:36 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:22 pm EDT.

What month has the most sunshine in Londonderry?

August has the most sunshine of the year, with an average of 10.4h of sunshine.

How many hours of sunshine does Londonderry have in August?

The average sunshine duration in August is 10.4h.

When is 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 UV index intensity in August in Londonderry?

In August, the average daily maximum UV index in Londonderry is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Londonderry, NH

Average temperature in August - Londonderry, NH
  • Average high temperature in August: 80.1°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 59.9°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).

[Resources]

Average pressure in August
Londonderry, NH

Average pressure in August - Londonderry, NH
  • Average pressure in August: 29.97"Hg

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 in August
Londonderry, NH

Average wind speed in August - Londonderry, NH
  • Average wind speed in August: 5.1mph

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 humidity in August
Londonderry, NH

Average humidity in August - Londonderry, NH
  • Average humidity in August: 75%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).

[Resources]

Average rainfall in August
Londonderry, NH

Average rainfall in August - Londonderry, NH
  • Average rainfall in August: 1.1"

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 in August
Londonderry, NH

Average rainfall days in August - Londonderry, NH
  • Average rainfall days in August: 10.4 days

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 in August
Londonderry, NH

Average snowfall in August - Londonderry, NH
  • Average snowfall in August: 0"

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 in August
Londonderry, NH

Average snowfall days in August - Londonderry, NH
  • Average snowfall days in August: 0 days

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 in August /
Average sunshine in August
Londonderry, NH

Average daylight in August / Average sunshine in August - Londonderry, NH
  • Average daylight in August: 13h and 53min

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).

  • Average sunshine in August: 10h and 24min

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 in August
Londonderry, NH

Average sunshine days in August - Londonderry, NH
  • Average sunshine days in August: 18 days

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 in August
Londonderry, NH

Average UV index in August - Londonderry, NH
  • Average UV index in August: 6

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 cloud cover in August
Londonderry, NH

Average cloud cover in August - Londonderry, NH
  • Average cloud cover in August: 33

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).

[Resources]

Average visibility in August
Londonderry, NH

Average visibility in August - Londonderry, NH
  • Average visibility in August: 5mi

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