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 start of September comes with a small reduction in the average high-temperature, subtly receding from an enjoyable 64.8°F (18.2°C) in August to a moderate 58.8°F (14.9°C). The temperature notes a substantial fall from the daily peak to an average of 34.3°F (1.3°C) during September nights.Humidity
In Twin Lakes, the average relative humidity in September is 59%.Rainfall
In Twin Lakes, during September, the rain falls for 11.8 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Twin Lakes, Colorado, during the entire year, the rain falls for 120.6 days and collects up to 19.29" (490mm) of precipitation.Snowfall
Months with snowfall are January through December. In Twin Lakes, in September, during 3.2 snowfall days, 1.14" (29mm) of snow is typically accumulated. Throughout the year, there are 142.6 snowfall days, and 90.39" (2296mm) of snow is accumulated.Daylight
In Twin Lakes, Colorado, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:49 pm MDT.
Sunshine
The average sunshine in September is 10.8h.UV index
In Twin Lakes, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 3 during September translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. It's recommended to limit sun exposure when its radiation is at its peak during midday. Enhance your sun protection with tightly woven, yet airy clothing. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What are September temperatures in Twin Lakes?
What is the average humidity in September in Twin Lakes?
How much does it rain in Twin Lakes in September?
How many days does it snow in September in Twin Lakes?
What is the average length of the day in September in Twin Lakes?
When is the sunrise / sunset in September in Twin Lakes?
How many hours of sunshine does Twin Lakes have in September?
How high is the UV index in September in Twin Lakes?
Average temperature in September
Twin Lakes, CO
- Average high temperature in September: 58.8°F
The warmest month (with the highest average high temperature) is July (66.7°F).
The month with the lowest average high temperature is December (23.5°F).
- Average low temperature in September: 34.3°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 (2.7°F).
Average pressure in September
Twin Lakes, CO
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is April (29.94"Hg).
Average wind speed in September
Twin Lakes, CO
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in September
Twin Lakes, CO
- Average humidity in September: 59%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is June (51%).
Average rainfall in September
Twin Lakes, CO
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is November (0.91").
Average rainfall days in September
Twin Lakes, CO
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (3.9 days).
Average snowfall in September
Twin Lakes, CO
- Average snowfall in September: 1.14"
The month with the highest snowfall is March (15.08").
The month with the least snowfall is August (0.31").
Average snowfall days in September
Twin Lakes, CO
- Average snowfall days in September: 3.2 days
The month with the highest number of snowfall days is March (20 days).
The month with the least snowfall days is August (1.3 days).
Average daylight in September /
Average sunshine in September
Twin Lakes, CO
- Average daylight in September: 12h and 2min
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 30min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in September
Twin Lakes, CO
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is April (6.1 days).
Average UV index in September
Twin Lakes, CO
- Average UV index in September: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Twin Lakes, CO
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Twin Lakes, CO
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Twin Lakes, Colorado, USA
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