August weather forecastLyons, CO
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Lyons, Colorado, with an average temperature varying between 79.5°F (26.4°C) and 53.2°F (11.8°C).Temperature
August's onset records an average high-temperature of a still moderately hot 79.5°F (26.4°C), a near match to July's 80.6°F (27°C). August nights bring a pronounced temperature shift, with averages hovering around a fresh 53.2°F (11.8°C).Humidity
The months with the lowest humidity are June, August and September, with an average relative humidity of 46%.Rainfall
In August, the rain falls for 18.4 days. Throughout August, 1.73" (44mm) of precipitation is accumulated. Throughout the year, in Lyons, there are 134.2 rainfall days, and 17.13" (435mm) of precipitation is accumulated.Snowfall
In Lyons, Colorado, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 43min.On the first day of the month, sunrise is at 5:59 am and sunset at 8:15 pm. On the last day of August, sunrise is at 6:28 am and sunset at 7:33 pm MDT.
Sunshine
In August, the average sunshine is 11.6h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Lyons, CO
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is December (35.4°F).
- Average low temperature in August: 53.2°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is December (17.6°F).
Average pressure in August
Lyons, CO
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in August
Lyons, CO
- Average wind speed in August: 5.5mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in August
Lyons, CO
- Average humidity in August: 46%
The month with the highest relative humidity is February (71%).
The months with the lowest relative humidity are June, August and September (46%).
Average rainfall in August
Lyons, CO
- Average rainfall in August: 1.73"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Lyons, CO
- Average rainfall days in August: 18.4 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is November (3.6 days).
Average snowfall in August
Lyons, CO
- Average snowfall in August: 0"
The month with the highest snowfall is April (8.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Lyons, CO
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Lyons, CO
- Average daylight in August: 13h and 42min
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 36min
The months with the most sunshine are June and July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in August
Lyons, CO
- Average sunshine days in August: 8.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in August
Lyons, CO
- 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, October, November and December (UV index 2).
Average cloud cover in August
Lyons, CO
- Average cloud cover in August: 18
The months with the most cloud cover are April and May (Cloud cover 28).
The months with the least cloud cover are June and September (Cloud cover 17).
Average visibility in August
Lyons, 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).





