August weather forecast
Lake Monticello, VA

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Weather in August

August, the last month of the summer in Lake Monticello, is another tropical month, with temperature in the range of an average high of 86.9°F (30.5°C) and an average low of 64.6°F (18.1°C).

Temperature

The transition from July to August brings an average high-temperature of a still hot 86.9°F (30.5°C), barely different from July's 89.6°F (32°C). During August, Lake Monticello's temperature records a considerable difference from its daily highs to an average low of 64.6°F (18.1°C).

Heat index

August's heat index is evaluated at a very hot 98.6°F (37°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Lake Monticello, the average relative humidity in August is 72%.

Rainfall

In August, the rain falls for 13.5 days. Throughout August, 2.09" (53mm) of precipitation is accumulated. Throughout the year, there are 142.4 rainfall days, and 25.51" (648mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 35min.
On the first day of the month, sunrise is at 6:17 am and sunset at 8:22 pm. On the last day of August, sunrise is at 6:43 am and sunset at 7:43 pm EDT.

Sunshine

In Lake Monticello, the average sunshine in August is 10.3h.

UV index

The months with the highest UV index in Lake Monticello are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in August interprets into the following advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The average high-temperature and low-temperature during August are 86.9°F (30.5°C) and 64.6°F (18.1°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 98.6°F (37°C).

What is the average humidity in August?

The average relative humidity in August is 72%.

How many days does it rain in August?

In Lake Monticello, in August, during 13.5 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Lake Monticello have in August?

In August, the average day length is 13h and 35min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:17 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:43 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 10.3h.

What are the months with the highest UV index?

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

What is the UV index reading in August?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average max. wind speed
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
Lake Monticello, VA

Average temperature in August - Lake Monticello, VA
  • Average high temperature in August: 86.9°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (43°F).

  • Average low temperature in August: 64.6°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

Average pressure in August
Lake Monticello, VA

Average pressure in August - Lake Monticello, VA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in August
Lake Monticello, VA

Average wind speed in August - Lake Monticello, VA
  • Average wind speed in August: 4.3mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in August
Lake Monticello, VA

Average humidity in August - Lake Monticello, VA
  • Average humidity in August: 72%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).

Average rainfall in August
Lake Monticello, VA

Average rainfall in August - Lake Monticello, VA
  • Average rainfall in August: 2.09"

The wettest month (with the highest rainfall) is April (2.76").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in August
Lake Monticello, VA

Average rainfall days in August - Lake Monticello, VA
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in August
Lake Monticello, VA

Average snowfall in August - Lake Monticello, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Lake Monticello, VA

Average snowfall days in August - Lake Monticello, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Lake Monticello, VA

Average daylight in August / Average sunshine in August - Lake Monticello, VA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in August
Lake Monticello, VA

Average sunshine days in August - Lake Monticello, VA
  • Average sunshine days in August: 15.6 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is May (13.1 days).

Average UV index in August
Lake Monticello, VA

Average UV index in August - Lake Monticello, VA
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in August
Lake Monticello, VA

Average cloud cover in August - Lake Monticello, VA
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in August
Lake Monticello, VA

Average visibility in August - Lake Monticello, VA
  • Average visibility in August: 6mi

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

Lake Monticello, Virginia, USA

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