September weather forecastFranktown, CO
September
Weather in September
The first month of the autumn, September, is still a warm month in Franktown, Colorado, with an average temperature ranging between max 75.7°F (24.3°C) and min 52.2°F (11.2°C).Temperature
As Franktown enters September, the average high-temperature subtly lowers from the a moderately hot 82°F (27.8°C) of August to a still warm 75.7°F (24.3°C). A stark contrast in day to night temperatures can be seen in September, with an average low-temperature of 52.2°F (11.2°C).Humidity
With an average relative humidity of 45%, September is the least humid month in Franktown.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. In Franktown, during the entire year, the rain falls for 116.5 days and collects up to 16.22" (412mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. In Franktown, during the entire year, snow falls for 53.7 days and aggregates up to 35.51" (902mm) of snow.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:28 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:42 pm MDT.
Sunshine
In Franktown, the average sunshine in September is 10.9h.UV index
In Franktown, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Franktown, CO
- Average high temperature in September: 75.7°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is December (38.8°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is December (20.5°F).
Average pressure in September
Franktown, CO
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are April and June (29.9"Hg).
Average wind speed in September
Franktown, CO
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in September
Franktown, CO
- Average humidity in September: 45%
The month with the highest relative humidity is February (65%).
The month with the lowest relative humidity is September (45%).
Average rainfall in September
Franktown, CO
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is July (2.8").
The driest month (with the least rainfall) is December (0.47").
Average rainfall days in September
Franktown, CO
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Franktown, CO
- Average snowfall in September: 0.12"
The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Franktown, CO
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Franktown, CO
- Average daylight in September: 12h and 24min
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 September: 10h and 54min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Franktown, CO
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is July (6.3 days).
Average UV index in September
Franktown, CO
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Franktown, CO
- Average cloud cover in September: 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 17).
Average visibility in September
Franktown, 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).
