August weather forecastProspect Valley, CO
August
Weather in August
The last month of the summer, August, is another hot month in Prospect Valley, Colorado, with an average temperature varying between 60.3°F (15.7°C) and 86.4°F (30.2°C).Temperature
August's arrival registers an average high-temperature of a still tropical 86.4°F (30.2°C), closely aligning with the temperature of the previous month. A sharp contrast between day and night is prevalent in August with an average nighttime temperature of 60.3°F (15.7°C).Heat index
In August, the average heat index is calculated to be a tropical 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 42%.Rainfall
In Prospect Valley, during August, the rain falls for 10.9 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 81.5 rainfall days, and 8.7" (221mm) of precipitation is accumulated.Snowfall
In Prospect Valley, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 42min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:30 pm MDT.
Sunshine
The average sunshine in August in Prospect Valley, Colorado, is 11.8h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Prospect Valley, CO
- Average high temperature in August: 86.4°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (40.1°F).
- Average low temperature in August: 60.3°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in August
Prospect Valley, CO
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Prospect Valley, CO
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest months (with the lowest average wind speed) are September and December (6.5mph).
Average humidity in August
Prospect Valley, CO
- Average humidity in August: 42%
The months with the highest relative humidity are January and February (64%).
The months with the lowest relative humidity are August and September (42%).
Average rainfall in August
Prospect Valley, CO
- Average rainfall in August: 0.98"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is December (0.16").
Average rainfall days in August
Prospect Valley, CO
- Average rainfall days in August: 10.9 days
The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is January (1.4 days).
Average snowfall in August
Prospect Valley, CO
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Prospect Valley, CO
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Prospect Valley, 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 48min
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 36min).
Average sunshine days in August
Prospect Valley, CO
- Average sunshine days in August: 14.9 days
The month with the most sunshine days is December (26.4 days).
The month with the least sunshine days is July (13 days).
Average UV index in August
Prospect Valley, 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
Prospect Valley, CO
- Average cloud cover in August: 17
The month with the most cloud cover is April (Cloud cover 28).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in August
Prospect Valley, 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).





