August weather forecast
Washington, NH

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Weather in August

The last month of the summer, August, is also a moderately hot month in Washington, New Hampshire, with an average temperature varying between 76.5°F (24.7°C) and 56.3°F (13.5°C).

Temperature

Washington experiences an average high-temperature of a still warm 76.5°F (24.7°C) in August, marking an insignificant shift from 78.4°F (25.8°C) in July. During the August nights, an average temperature of 56.3°F (13.5°C) is observed.

Humidity

The average relative humidity in August in Washington is 78%.

Rainfall

In Washington, New Hampshire, during August, the rain falls for 11.9 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 121.9 rainfall days, and 13.58" (345mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 54min.
On the first day of the month, sunrise is at 5:39 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:12 am and sunset at 7:24 pm EDT.

Sunshine

The month with the most sunshine in Washington is August, with an average of 10h of sunshine.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 5 in August leads to these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the temperature in August in Washington?

In Washington, 76.5°F (24.7°C) is the average high-temperature and 56.3°F (13.5°C) is the average low-temperature during August.

What is the average humidity in August in Washington?

In Washington, New Hampshire, the average relative humidity in August is 78%.

How many days does it rain in August in Washington?

In Washington, New Hampshire, during August, the rain falls for 11.9 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow in Washington?

June through September are months without snowfall.

How many hours of daylight does Washington have in August?

In Washington, New Hampshire, the average day length in August is 13h and 54min.

When are sunrise and sunset in August in Washington?

In August, on the first day of the month, sunrise is at 5:39 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 7:24 pm EDT.

What month has the most sunshine in Washington?

The month with the most sunshine in Washington is August, with an average of 10h of sunshine.

How long on average sun shines in August in Washington?

The average sunshine duration in August in Washington, New Hampshire, is 10h.

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

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

What is the UV index reading in August in Washington?

In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Washington, NH

Average temperature in August - Washington, NH
  • Average high temperature in August: 76.5°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in August: 56.3°F

The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

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Average pressure in August
Washington, NH

Average pressure in August - Washington, 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 (29.91"Hg).

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Average wind speed in August
Washington, NH

Average wind speed in August - Washington, NH
  • Average wind speed in August: 5mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in August
Washington, NH

Average humidity in August - Washington, NH
  • Average humidity in August: 78%

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

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Average rainfall in August
Washington, NH

Average rainfall in August - Washington, NH
  • Average rainfall in August: 0.98"

The wettest month (with the highest rainfall) is October (1.61").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in August
Washington, NH

Average rainfall days in August - Washington, NH
  • Average rainfall days in August: 11.9 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in August
Washington, NH

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

The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Washington, NH

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

The month with the highest number of snowfall days is February (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Washington, NH

Average daylight in August / Average sunshine in August - Washington, NH
  • Average daylight in August: 13h and 5min

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).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

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Average sunshine days in August
Washington, NH

Average sunshine days in August - Washington, NH
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is April (12.9 days).

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Average UV index in August
Washington, NH

Average UV index in August - Washington, NH
  • Average UV index in August: 5

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).

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Average cloud cover in August
Washington, NH

Average cloud cover in August - Washington, NH
  • Average cloud cover in August: 37

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in August
Washington, NH

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

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).

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Washington, New Hampshire, USA

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