Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a tropical 88°F (31.1°C) in August to a warm 79.7°F (26.5°C). The nighttime average for Milliken in September plummets considerably from its daytime counterpart, resting at a fresh 53.4°F (11.9°C).Humidity
August and September, with an average relative humidity of 42%, are the least humid months.Rainfall
In Milliken, in September, it is raining for 7.6 days, with typically 0.75" (19mm) of accumulated precipitation. In Milliken, during the entire year, the rain falls for 107.4 days and collects up to 11.3" (287mm) of precipitation.Snowfall
In Milliken, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:42 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 estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What are the least humid months?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in Milliken in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Milliken have in September?
How high is the UV index in September?
Average temperature in September
Milliken, CO
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (39.4°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in September
Milliken, CO
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Milliken, CO
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in September
Milliken, CO
- Average humidity in September: 42%
The months with the highest relative humidity are January, February and December (63%).
The months with the lowest relative humidity are August and September (42%).
Average rainfall in September
Milliken, CO
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is May (2.13").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in September
Milliken, CO
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (3.7 days).
Average snowfall in September
Milliken, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Milliken, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Milliken, CO
- Average daylight in September: 12h and 2min
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 5min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in September
Milliken, CO
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Milliken, 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
Milliken, CO
- Average cloud cover in September: 16
The month with the most cloud cover is April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in September
Milliken, 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).
Milliken, Colorado, USA
Weather forecast for your location
2. Allow the app to use your location