August weather forecast
Jefferson, NH

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Weather in August

The last month of the summer, August, is another warm month in Jefferson, New Hampshire, with an average temperature varying between 52°F (11.1°C) and 73.4°F (23°C).

Temperature

Jefferson records a slight change with August's average high-temperatures adjusting to a still moderately hot 73.4°F (23°C) from July's 74.8°F (23.8°C). Jefferson experiences a mean low-temperature of 52°F (11.1°C) during August.

Humidity

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

Rainfall

In Jefferson, during August, the rain falls for 17.3 days and regularly aggregates up to 2.28" (58mm) of precipitation. In Jefferson, during the entire year, the rain falls for 159.6 days and collects up to 31.97" (812mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

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

Sunshine

The month with the most sunshine is August, with an average of 9.5h of sunshine.

UV index

In August, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 4 in August suggests the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

The high-temperature, in August, in Jefferson, records 73.4°F (23°C), while the low-temperature is 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 August, the rain falls for 17.3 days. Throughout August, 2.28" (58mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Jefferson have in August?

The average day length in August is 13h and 59min.

When are sunrise and sunset in August in Jefferson?

On the first day of August, 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?

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

How many hours of sunshine does Jefferson have in August?

The average sunshine duration in August is 9.5h.

What is the UV index intensity in August?

In Jefferson, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Jefferson, New Hampshire, USA

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