August weather forecast
Derby, ME

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Weather in August

August, the last month of the summer in Derby, is another warm month, with temperature in the range of an average low of 55.2°F (12.9°C) and an average high of 75.9°F (24.4°C).

Temperature

The shift into August uncovers an average high-temperature of a still moderately hot 75.9°F (24.4°C), subtly different from the previous month. August in Derby generally records an average low-temperature of 55.2°F (12.9°C).

Humidity

In August, the average relative humidity is 78%.

Rainfall

In August, in Derby, Maine, the rain falls for 15.2 days. Throughout August, 2.32" (59mm) of precipitation is accumulated. In Derby, during the entire year, the rain falls for 146.2 days and collects up to 27.17" (690mm) of precipitation.

Snowfall

June through September are months without snowfall in Derby.

Daylight

In August, the average length of the day is 14h and 2min.
On the first day of August in Derby, sunrise is at 5:21 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 7:14 pm EDT.

Sunshine

August has the most sunshine of the year in Derby, Maine, with an average of 9.7h of sunshine.

UV index

The months with the highest UV index in Derby are June through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 5 in August translates into these instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What is the average August temperature in Derby?

August temperatures vary between a high-temperature of 75.9°F (24.4°C) and a low-temperature of 55.2°F (12.9°C).

What is the average humidity in August in Derby?

The average relative humidity in August in Derby, Maine, is 78%.

How many days does it rain in August in Derby?

In Derby, in August, it is raining for 15.2 days, with typically 2.32" (59mm) of accumulated precipitation.

When it does not snow in Derby?

June through September are months without snowfall in Derby, Maine.

How many hours of daylight does Derby have in August?

The average day length in August is 14h and 2min.

What time are sunrise and sunset in August in Derby?

In August, on the first day of the month, sunrise is at 5:21 am and sunset at 8:02 pm. On the last day of the month, in Derby, Maine, sunrise is at 5:57 am and sunset at 7:14 pm EDT.

What month has the most sunshine in Derby?

With an average of 9.7h of sunshine, August has the most sunshine of the year in Derby.

How many hours of sunshine does Derby have in August?

In August, the average sunshine duration in Derby is 9.7h.

What are the months with the highest UV index in Derby?

The months with the highest UV index in Derby, Maine, are June through August, with an average maximum UV index of 5.

What is the UV index reading in August in Derby?

In August, the average daily maximum UV index in Derby, Maine, is 5. 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
Derby, ME

Average temperature in August - Derby, ME
  • Average high temperature in August: 75.9°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in August: 55.2°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).

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Average pressure in August
Derby, ME

Average pressure in August - Derby, ME
  • Average pressure in August: 29.95"Hg

The months with the highest atmospheric pressure are September and November (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in August
Derby, ME

Average wind speed in August - Derby, ME
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in August
Derby, ME

Average humidity in August - Derby, ME
  • Average humidity in August: 78%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (75%).

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Average rainfall in August
Derby, ME

Average rainfall in August - Derby, ME
  • Average rainfall in August: 2.32"

The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (1.57").

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Average rainfall days in August
Derby, ME

Average rainfall days in August - Derby, ME
  • Average rainfall days in August: 15.2 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (6.9 days).

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Average snowfall in August
Derby, ME

Average snowfall in August - Derby, ME
  • Average snowfall in August: 0"

The month with the highest snowfall is February (8.35").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Derby, ME

Average snowfall days in August - Derby, ME
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (15.3 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
Derby, ME

Average daylight in August / Average sunshine in August - Derby, ME
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

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Average sunshine days in August
Derby, ME

Average sunshine days in August - Derby, ME
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is April (10.7 days).

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Average UV index in August
Derby, ME

Average UV index in August - Derby, ME
  • Average UV index in August: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in August
Derby, ME

Average cloud cover in August - Derby, ME
  • Average cloud cover in August: 40

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 40).

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Average visibility in August
Derby, ME

Average visibility in August - Derby, ME
  • Average visibility in August: 5mi

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

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Derby, Maine, USA

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