August weather forecastJefferson, CO
August
Weather in August
The last month of the summer, August, is another refreshing month in Jefferson, Colorado, with an average temperature fluctuating between 63.7°F (17.6°C) and 37.9°F (3.3°C).Temperature
Transitioning into August, Jefferson experiences an average high-temperature of a still comfortable 63.7°F (17.6°C), marking a minor shift from the preceding month. Jefferson demonstrates a significant disparity from daytime highs throughout the month of August, with an average nighttime temperature of 37.9°F (3.3°C).Humidity
In August, the average relative humidity is 61%.Rainfall
In Jefferson, in August, during 17.8 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Jefferson, during the entire year, the rain falls for 110.4 days and collects up to 24.09" (612mm) of precipitation.Snowfall
Months with snowfall are January through December. In Jefferson, in August, during 2.2 snowfall days, 0.47" (12mm) of snow is typically accumulated. In Jefferson, during the entire year, snow falls for 158 days and aggregates up to 118.82" (3018mm) of snow.Daylight
In Jefferson, Colorado, the average length of the day in August is 13h and 40min.On the first day of August, sunrise is at 6:03 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:35 pm MDT.
Sunshine
In Jefferson, the average sunshine in August is 11h.UV index
May through August, with an average maximum UV index of 3, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In August, the UV index of 3 transforms into the following advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Jefferson, CO
- Average high temperature in August: 63.7°F
The warmest month (with the highest average high temperature) is July (65.8°F).
The month with the lowest average high temperature is December (21.2°F).
- Average low temperature in August: 37.9°F
The month with the highest average low temperature is July (40.1°F).
The coldest months (with the lowest average low temperature) are January and December (0.7°F).
Average pressure in August
Jefferson, CO
- Average pressure in August: 30.06"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are April and May (29.94"Hg).
Average wind speed in August
Jefferson, CO
- Average wind speed in August: 4.8mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in August
Jefferson, CO
- Average humidity in August: 61%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (54%).
Average rainfall in August
Jefferson, CO
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is July (3.35").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in August
Jefferson, CO
- Average rainfall days in August: 17.8 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is November (2.8 days).
Average snowfall in August
Jefferson, CO
- Average snowfall in August: 0.47"
The month with the highest snowfall is May (19.69").
The month with the least snowfall is July (0.24").
Average snowfall days in August
Jefferson, CO
- Average snowfall days in August: 2.2 days
The month with the highest number of snowfall days is April (22.8 days).
The month with the least snowfall days is July (1.3 days).
Average daylight in August /
Average sunshine in August
Jefferson, CO
- Average daylight in August: 13h and 42min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 11h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in August
Jefferson, CO
- Average sunshine days in August: 9 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in August
Jefferson, CO
- Average UV index in August: 3
The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in August
Jefferson, CO
- Average cloud cover in August: 25
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 19).
Average visibility in August
Jefferson, CO
- Average visibility in August: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
