August weather forecast and climate
Louisville, CO

Weather in August

The last month of the summer, August, is another warm month in Louisville, Colorado, with average temperature ranging between min 57.4°F (14.1°C) and max 84.2°F (29°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a still warm 84.2°F (29°C). In August, the average low-temperature is 57.4°F (14.1°C).

Heat index

The average heat index is calculated to be 83.7°F (28.7°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, wind, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The least humid month in Louisville is August, with an average relative humidity of 41%.

Rainfall

In Louisville, Colorado, during August, the rain falls for 9.8 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Louisville, during the entire year, the rain falls for 96.7 days and collects up to 5.63" (143mm) of precipitation.

Snowfall

In Louisville snow does not fall in June through September.

Daylight

In Louisville, the average length of the day in August is 13.7h.

Sunshine

Months with the most sunshine are June through August, with an average of 11.8h of sunshine.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Louisville?

The average high-temperature, in August, in Louisville, Colorado, is 84.2°F (29°C), while the average low-temperature is 57.4°F (14.1°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in August is calculated to be 83.7°F (28.7°C).

What is the least humid month in Louisville?

August is the least humid month in Louisville, Colorado, with an average relative humidity of 41%.

What is the average humidity in August in Louisville?

In Louisville, the average relative humidity in August is 41%.

How much does it rain in Louisville in August?

In Louisville, Colorado, in August, it is raining for 9.8 days, with typically 0.55" (14mm) of accumulated precipitation.

When it does not snow in Louisville?

June through September are months without snowfall.

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

The average length of the day in August in Louisville, Colorado, is 13.7h.

What is the month with the most sunshine in Louisville?

June through August, with an average of 11.8h of sunshine, are months with the most sunshine.

How long on average sun shines in August in Louisville?

The average sunshine in August is 11.8h.

When is the highest UV index in Louisville?

July and August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in August in Louisville?

The average daily maximum UV index in August in Louisville is 6. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in August
Louisville, CO

Average temperature in August - Louisville, CO
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (39.4°F).

  • Average low temperature in August: 57.4°F

The month with the highest average low temperature is July (59°F).
The coldest months (with the lowest average low temperature) are February and December (20.7°F).

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Average pressure in August
Louisville, CO

Average pressure in August - Louisville, CO
  • Average pressure in August: 30.01"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are April and June (29.91").

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Average wind speed in August
Louisville, CO

Average wind speed in August - Louisville, CO
  • Average wind speed in August: 5.7mph

The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).

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Average humidity in August
Louisville, CO

Average humidity in August - Louisville, CO
  • Average humidity in August: 41%

The month with the highest relative humidity is February (67%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in August
Louisville, CO

Average rainfall in August - Louisville, CO
  • Average rainfall in August: 0.55"

The wettest months (with the highest rainfall) are May and July (0.87").
The driest month (with the least rainfall) is January (0.16").

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Average rainfall days in August
Louisville, CO

Average rainfall days in August - Louisville, CO
  • Average rainfall days in August: 9.8 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is November (3.5 days).

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Average snowfall in August
Louisville, CO

Average snowfall in August - Louisville, CO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.68").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Louisville, CO

Average snowfall days in August - Louisville, CO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (8.4 days).
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
Louisville, CO

Average daylight in August / Average sunshine in August - Louisville, CO
  • Average daylight in August: 13.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in August: 11.8h

Months with the most sunshine are June, July and August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.7h).

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Average sunshine days in August
Louisville, CO

Average sunshine days in August - Louisville, CO
  • Average sunshine days in August: 13.3 days

The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is July (10 days).

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Average UV index in August
Louisville, CO

Average UV index in August - Louisville, CO
  • Average UV index in August: 6

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Louisville, CO

Average cloud cover in August - Louisville, CO
  • Average cloud cover in August: 16

Months with the most cloud cover are April and May (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).

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Average visibility in August
Louisville, CO

Average visibility in August - Louisville, CO
  • Average visibility in August: 6mi

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

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