August weather forecast
Jefferson, NH

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Weather in August

August, the last month of the summer in Jefferson, is also a moderately hot month, with an average temperature varying between 52°F (11.1°C) and 73.4°F (23°C).

Temperature

August's average high-temperature is a still warm 73.4°F (23°C), maintaining a close comparison with July's 74.8°F (23.8°C). Throughout August, Jefferson records an average temperature of 52°F (11.1°C) at night.

Humidity

In Jefferson, the average relative humidity in August is 80%.

Rainfall

In Jefferson, in August, it is raining for 17.3 days, with typically 2.28" (58mm) of accumulated precipitation. In Jefferson, during the entire year, the rain falls for 159.6 days and collects up to 31.97" (812mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August in Jefferson is 13h and 59min.
On the first day of August in Jefferson, sunrise is at 5:33 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 7:23 pm EDT.

Sunshine

With an average of 9.5h of sunshine, August has the most sunshine of the year in Jefferson, New Hampshire.

UV index

In Jefferson, the average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 4 in August translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the average August temperature in Jefferson?

August temperatures vary between a high-temperature of 73.4°F (23°C) and a low-temperature of 52°F (11.1°C).

What is the average humidity in August in Jefferson?

The average relative humidity in August is 80%.

How many days does it rain in August in Jefferson?

In August, in Jefferson, the rain falls for 17.3 days. Throughout August, 2.28" (58mm) of precipitation is accumulated.

When it does not snow in Jefferson?

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

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

The average day length in August in Jefferson, New Hampshire, is 13h and 59min.

What time are sunrise and sunset in August in Jefferson?

On the first day of August in Jefferson, sunrise is at 5:33 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 7:23 pm EDT.

What month has the most sunshine in Jefferson?

August has the most sunshine of the year, with an average of 9.5h of sunshine.

How long on average sun shines in August in Jefferson?

In Jefferson, the average sunshine duration in August is 9.5h.

How high is the UV index in August in Jefferson?

In August, the average daily maximum UV index in Jefferson is 4. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Jefferson, NH

Average temperature in August - Jefferson, NH
  • Average high temperature in August: 73.4°F

The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in August: 52°F

The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).

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Average pressure in August
Jefferson, NH

Average pressure in August - Jefferson, NH
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Jefferson, NH

Average wind speed in August - Jefferson, NH
  • Average wind speed in August: 4.6mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in August
Jefferson, NH

Average humidity in August - Jefferson, NH
  • Average humidity in August: 80%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (77%).

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Average rainfall in August
Jefferson, NH

Average rainfall in August - Jefferson, NH
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (2.17").

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Average rainfall days in August
Jefferson, NH

Average rainfall days in August - Jefferson, NH
  • Average rainfall days in August: 17.3 days

The month with the highest number of rainy days is June (18.9 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall in August
Jefferson, NH

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

The month with the highest snowfall is February (14.88").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Jefferson, NH

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

The month with the highest number of snowfall days is January (21.2 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
Jefferson, NH

Average daylight in August / Average sunshine in August - Jefferson, NH
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in August: 9h and 3min

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).

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Average sunshine days in August
Jefferson, NH

Average sunshine days in August - Jefferson, NH
  • Average sunshine days in August: 10.9 days

The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (7 days).

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Average UV index in August
Jefferson, NH

Average UV index in August - Jefferson, NH
  • Average UV index in August: 4

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

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Average cloud cover in August
Jefferson, NH

Average cloud cover in August - Jefferson, NH
  • Average cloud cover in August: 42

The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 42).

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Average visibility in August
Jefferson, NH

Average visibility in August - Jefferson, NH
  • Average visibility in August: 4mi

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

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Jefferson, New Hampshire, USA

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