September weather forecastDacono, CO
September
Weather in September
September, the first month of the autumn in Dacono, is also a moderately hot month, with an average temperature ranging between max 80.1°F (26.7°C) and min 53.4°F (11.9°C).Temperature
Dacono's September weather features a light decline in high-temperatures, reducing from a hot 88.2°F (31.2°C) in August to a warm 80.1°F (26.7°C). The nighttime average for Dacono in September plummets considerably from its daytime counterpart, resting at a fresh 53.4°F (11.9°C).Humidity
In September, the average relative humidity is 41%.Rainfall
In September, the rain falls for 7.5 days. Throughout September, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 87 rainfall days, and 9.88" (251mm) of precipitation is accumulated.Snowfall
In Dacono, snow does not fall in June through September.Daylight
In Dacono, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm MDT.
Sunshine
In September, the average sunshine is 10.9h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dacono, CO
- Average high temperature in September: 80.1°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (40.8°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is December (21°F).
Average pressure in September
Dacono, CO
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Dacono, CO
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is December (5.7mph).
Average humidity in September
Dacono, CO
- Average humidity in September: 41%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Dacono, CO
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is May (1.69").
The driest months (with the least rainfall) are January and December (0.35").
Average rainfall days in September
Dacono, CO
- Average rainfall days in September: 7.5 days
The months with the highest number of rainy days are May and July (12.3 days).
The months with the least rainy days are January and December (3 days).
Average snowfall in September
Dacono, CO
- Average snowfall in September: 0"
The month with the highest snowfall is April (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dacono, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Dacono, CO
- Average daylight in September: 12h and 24min
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 September: 10h and 54min
The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in September
Dacono, CO
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is December (24.5 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in September
Dacono, CO
- Average UV index in September: 4
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 September
Dacono, CO
- Average cloud cover in September: 15
The month with the most cloud cover is April (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in September
Dacono, CO
- Average visibility in September: 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).
