August weather forecast
Windham, NH

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Weather in August

Despite the advent of August, the consistently warm trend continues unabated. The transition to a slightly more tolerable weather range is seen, though summer remains in full-swing. Regardless, August does not push the envelope much further than July, and the temperature is a close contender for the year's annual highest at 79.9°F (26.6°C). While the days continue to bask under sunny skies, one can expect a relatively stronger wind flow. Conclusively, August remains a favored month for outdoor exploits.

Temperature

Windham, New Hampshire, indicates an average high-temperature of a still moderately hot 79.9°F (26.6°C) in August, showing minor variation from July's 81.7°F (27.6°C). Windham experiences an average low-temperature of 61.9°F (16.6°C) in the month of August.

Humidity

In Windham, the average relative humidity in August is 74%.

Rainfall

In Windham, in August, it is raining for 13 days, with typically 1.69" (43mm) of accumulated precipitation. In Windham, during the entire year, the rain falls for 144 days and collects up to 26.97" (685mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Windham, the average length of the day in August is 13h and 52min.
On the first day of August, sunrise is at 5:37 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:21 pm EDT.

Sunshine

The month with the most sunshine is August, with an average of 10.6h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

The average high-temperature, in August, in Windham, is 79.9°F (26.6°C), while the average low-temperature is 61.9°F (16.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 86°F (30°C).

What is the average humidity in August?

In August, the average relative humidity in Windham is 74%.

How many days does it rain in August?

In August, the rain falls for 13 days. Throughout August, 1.69" (43mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Windham have in August?

In August, the average day length is 13h and 52min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:37 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:21 pm EDT.

What month has the most sunshine?

The month with the most sunshine is August, with an average of 10.6h of sunshine.

How long on average sun shines in August?

The average sunshine duration in August is 10.6h.

When is the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in August in Windham?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to 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
Windham, NH

Average temperature in August - Windham, NH
  • Average high temperature in August: 79.9°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 (32.2°F).

  • Average low temperature in August: 61.9°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in August
Windham, NH

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

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Windham, NH

Average wind speed in August - Windham, NH
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in August
Windham, NH

Average humidity in August - Windham, NH
  • Average humidity in August: 74%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

Average rainfall in August
Windham, NH

Average rainfall in August - Windham, NH
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in August
Windham, NH

Average rainfall days in August - Windham, NH
  • Average rainfall days in August: 13 days

The month with the highest number of rainy days is May (15.9 days).
The months with the least rainy days are January and February (7.6 days).

Average snowfall in August
Windham, NH

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

The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Windham, NH

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

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Windham, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in August
Windham, NH

Average sunshine days in August - Windham, NH
  • Average sunshine days in August: 16.5 days

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is May (13.5 days).

Average UV index in August
Windham, NH

Average UV index in August - Windham, 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).

Average cloud cover in August
Windham, NH

Average cloud cover in August - Windham, NH
  • Average cloud cover in August: 31

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in August
Windham, NH

Average visibility in August - Windham, NH
  • Average visibility in August: 6mi

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

Windham, New Hampshire, USA

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