August weather forecast
Thornton, CO

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Weather in August

August, the last month of the summer in Thornton, is another hot month, with an average temperature varying between 87.1°F (30.6°C) and 60.3°F (15.7°C).

Temperature

Thornton experiences an average high-temperature of a still tropical 87.1°F (30.6°C) in August, subtly different from July's 88.3°F (31.3°C). Nightly average temperatures in August reveal a significant dip from daytime highs, registering a consistent a moderate 60.3°F (15.7°C).

Humidity

With an average relative humidity of 39%, August is the least humid month.

Rainfall

In Thornton, in August, it is raining for 5.3 days, with typically 0.24" (6mm) of accumulated precipitation. In Thornton, during the entire year, the rain falls for 48.3 days and collects up to 3.19" (81mm) of precipitation.

Snowfall

In Thornton, snow does not fall in June through September.

Daylight

In Thornton, the average length of the day in August is 13h and 41min.
On the first day of August, sunrise is at 5:59 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:32 pm MDT.

Sunshine

In Thornton, the average sunshine in August is 11.8h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in August interprets into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Thornton during August?

In August, the average high-temperature and low-temperature are 87.1°F (30.6°C) and 60.3°F (15.7°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in July is estimated at 89.6°F (32°C).

What is the least humid month?

With an average relative humidity of 39%, August is the least humid month.

What is the average humidity in August?

In Thornton, the average relative humidity in August is 39%.

How much does it rain in August?

In Thornton, in August, during 5.3 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

When it does not snow?

In Thornton, snow does not fall in June through September.

What is the average length of the day in August?

In Thornton, the average day length in August is 13h and 41min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:59 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:32 pm MDT.

How many hours of sunshine does Thornton have in August?

The average sunshine duration in August is 11.8h.

What are the months with the highest UV index?

June 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?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe 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
Thornton, CO

Average temperature in August - Thornton, CO
  • Average high temperature in August: 87.1°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in August: 60.3°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

Average pressure in August
Thornton, CO

Average pressure in August - Thornton, CO
  • Average pressure in August: 30"Hg

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

Average wind speed in August
Thornton, CO

Average wind speed in August - Thornton, CO
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).

Average humidity in August
Thornton, CO

Average humidity in August - Thornton, CO
  • Average humidity in August: 39%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).

Average rainfall in August
Thornton, CO

Average rainfall in August - Thornton, CO
  • Average rainfall in August: 0.24"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").

Average rainfall days in August
Thornton, CO

Average rainfall days in August - Thornton, CO
  • Average rainfall days in August: 5.3 days

The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).

Average snowfall in August
Thornton, CO

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

The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Thornton, CO

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

The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Thornton, 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 24min).

  • Average sunshine in August: 11h and 5min

The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

Average sunshine days in August
Thornton, CO

Average sunshine days in August - Thornton, CO
  • Average sunshine days in August: 22.3 days

The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).

Average UV index in August
Thornton, CO

Average UV index in August - Thornton, CO
  • 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, November and December (UV index 2).

Average cloud cover in August
Thornton, CO

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

The months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).

Average visibility in August
Thornton, CO

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

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

Thornton, Colorado, USA

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