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
A subtle shift in Mount Crested Butte's weather is observed as August turns into September, with the average high temperature reducing from an enjoyable 64.6°F (18.1°C) to a mild 58.8°F (14.9°C). Mount Crested Butte documents a substantial deviation from daytime highs with a consistent low-temperature of 34.2°F (1.2°C) during September nights.Humidity
In Mount Crested Butte, Colorado, the average relative humidity in September is 61%.Rainfall
In September, in Mount Crested Butte, the rain falls for 13.5 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. Throughout the year, there are 117.4 rainfall days, and 29.33" (745mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In Mount Crested Butte, in September, snow falls for 4.5 days, with typically accumulated 1.89" (48mm) of snow. In Mount Crested Butte, during the entire year, snow falls for 159 days and aggregates up to 149.53" (3798mm) of snow.Daylight
In Mount Crested Butte, the average length of the day in September is 12h and 26min.On the first day of September in Mount Crested Butte, sunrise is at 6:37 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:51 pm MDT.
Sunshine
The average sunshine in September is 10.7h.UV index
In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 2 during September leads to these instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What is the average September temperature in Mount Crested Butte?
What is the average humidity in September in Mount Crested Butte?
How much does it rain in Mount Crested Butte in September?
How many days does it snow in September in Mount Crested Butte?
What is the average length of the day in September in Mount Crested Butte?
What time are sunrise and sunset in September in Mount Crested Butte?
How long on average sun shines in September in Mount Crested Butte?
What is the UV index intensity in September in Mount Crested Butte?
Average temperature in September
Mount Crested Butte, CO
- Average high temperature in September: 58.8°F
The warmest month (with the highest average high temperature) is July (67.6°F).
The months with the lowest average high temperature are February and December (22.6°F).
- Average low temperature in September: 34.2°F
The month with the highest average low temperature is July (41°F).
The coldest month (with the lowest average low temperature) is January (0°F).
Average pressure in September
Mount Crested Butte, CO
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The months with the lowest atmospheric pressure are April and May (29.95"Hg).
Average wind speed in September
Mount Crested Butte, CO
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Mount Crested Butte, CO
- Average humidity in September: 61%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is June (52%).
Average rainfall in September
Mount Crested Butte, CO
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in September
Mount Crested Butte, CO
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (3.1 days).
Average snowfall in September
Mount Crested Butte, CO
- Average snowfall in September: 1.89"
The month with the highest snowfall is March (23.94").
The month with the least snowfall is July (0.16").
Average snowfall days in September
Mount Crested Butte, CO
- Average snowfall days in September: 4.5 days
The month with the highest number of snowfall days is April (21.8 days).
The month with the least snowfall days is July (0.7 days).
Average daylight in September /
Average sunshine in September
Mount Crested Butte, 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 4min
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 6min).
Average sunshine days in September
Mount Crested Butte, CO
- Average sunshine days in September: 11.8 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is April (5.3 days).
Average UV index in September
Mount Crested Butte, CO
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, March and December (UV index 1).
Average cloud cover in September
Mount Crested Butte, CO
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Mount Crested Butte, 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, March, April and December (4mi).
Mount Crested Butte, Colorado, USA
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