August weather forecast
Hamilton, CO

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Weather in August

The last month of the summer, August, is also a moderately hot month in Hamilton, Colorado, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 80.6°F (27°C).

Temperature

The average high-temperature during August registers at a still warm 80.6°F (27°C), closely corresponding to the preceding month. A significant temperature decrease to an average a fresh 51.3°F (10.7°C) characterizes Hamilton's nighttime temperatures during August.

Heat index

The heat index in August is calculated to be 80.6°F (27°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
Understand that the heat index values take into account shaded locations and mild winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

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

Rainfall

August and September are months with the least rain when the rain falls for 7.4 days and typically aggregates up to 0.39" (10mm) of rain.

Snowfall

In Hamilton, snow does not fall in June through August.

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of the month, sunrise is at 6:08 am and sunset at 8:24 pm. On the last day of August, sunrise is at 6:37 am and sunset at 7:43 pm MDT.

Sunshine

The average sunshine in August in Hamilton is 11.8h.

UV index

The average daily maximum UV index in August in Hamilton is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 5 in August translates into this advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Hamilton in August?

In August, in Hamilton, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 51.3°F (10.7°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 80.6°F (27°C).

What is the least humid month in Hamilton?

With an average relative humidity of 41%, August is the least humid month.

What is the average humidity in August in Hamilton?

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

What is the driest month in Hamilton?

August and September are months with the least rain in Hamilton, Colorado, when the rain falls for 7.4 days and typically aggregates up to 0.39" (10mm) of rain.

How much does it rain in Hamilton in August?

In Hamilton, Colorado, in August, it is raining for 7.4 days, with typically 0.39" (10mm) of accumulated precipitation.

When it does not snow in Hamilton?

June through August are months without snowfall in Hamilton.

Does it snow in Hamilton in August?

In Hamilton, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Hamilton have in August?

In August, the average day length in Hamilton, Colorado, is 13h and 43min.

When is the sunrise / sunset in August in Hamilton?

In August, on the first day of the month, sunrise is at 6:08 am and sunset at 8:24 pm. On the last day of the month, in Hamilton, sunrise is at 6:37 am and sunset at 7:43 pm MDT.

How many hours of sunshine does Hamilton have in August?

In August, the average sunshine duration in Hamilton is 11.8h.

What is the UV index intensity in August in Hamilton?

In Hamilton, Colorado, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from 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
Hamilton, CO

Average temperature in August - Hamilton, CO
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in August: 51.3°F

The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).

Average pressure in August
Hamilton, CO

Average pressure in August - Hamilton, CO
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The months with the lowest atmospheric pressure are May and June (29.92"Hg).

Average wind speed in August
Hamilton, CO

Average wind speed in August - Hamilton, CO
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

Average humidity in August
Hamilton, CO

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

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (41%).

Average rainfall in August
Hamilton, CO

Average rainfall in August - Hamilton, CO
  • Average rainfall in August: 0.39"

The wettest month (with the highest rainfall) is April (1.38").
The driest months (with the least rainfall) are August and September (0.39").

Average rainfall days in August
Hamilton, CO

Average rainfall days in August - Hamilton, CO
  • Average rainfall days in August: 7.4 days

The month with the highest number of rainy days is April (10.8 days).
The month with the least rainy days is January (3.1 days).

Average snowfall in August
Hamilton, CO

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

The month with the highest snowfall is December (7.28").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Hamilton, CO

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

The month with the highest number of snowfall days is February (13.8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Hamilton, CO

Average daylight in August / Average sunshine in August - Hamilton, CO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

Average sunshine days in August
Hamilton, CO

Average sunshine days in August - Hamilton, CO
  • Average sunshine days in August: 20.4 days

The month with the most sunshine days is June (22.8 days).
The month with the least sunshine days is February (13.3 days).

Average UV index in August
Hamilton, CO

Average UV index in August - Hamilton, CO
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in August
Hamilton, CO

Average cloud cover in August - Hamilton, CO
  • Average cloud cover in August: 13

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is September (Cloud cover 12).

Average visibility in August
Hamilton, CO

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

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Hamilton, Colorado, USA

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