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 modest decline in the average high-temperature is seen during September, decreasing from a warm 76.8°F (24.9°C) in August to an agreeable 69.3°F (20.7°C). Despite a significant disparity with daytime temperatures, an average low-temperature of 39.7°F (4.3°C) is recorded during September.Humidity
The average relative humidity in September is 52%.Rainfall
September is the month with the least rainfall in Carbondale. Rain falls for 6.4 days and accumulates 0.35" (9mm) of precipitation.Snowfall
In Carbondale, snow does not fall in July 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 6:38 am and sunset at 7:39 pm. On the last day of September, in Carbondale, Colorado, sunrise is at 7:04 am and sunset at 6:52 pm MDT.
Sunshine
The average sunshine in September is 11.2h.UV index
In September, the average daily maximum UV index in Carbondale is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What are September temperatures in Carbondale?
What is the average humidity in September in Carbondale?
What is the driest month in Carbondale?
How much does it rain in Carbondale in September?
When it does not snow in Carbondale?
Does it snow in Carbondale in September?
What is the average length of the day in September in Carbondale?
What time are sunrise and sunset in September in Carbondale?
How long on average sun shines in September in Carbondale?
What is the UV index reading in September in Carbondale?
Average temperature in September
Carbondale, CO
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 39.7°F
The month with the highest average low temperature is July (45.5°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure in September
Carbondale, CO
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is May (29.94"Hg).
Average wind speed in September
Carbondale, CO
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).
Average humidity in September
Carbondale, CO
- Average humidity in September: 52%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is June (47%).
Average rainfall in September
Carbondale, CO
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is April (1.61").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in September
Carbondale, CO
- Average rainfall days in September: 6.4 days
The month with the highest number of rainy days is April (13.3 days).
The month with the least rainy days is November (5.8 days).
Average snowfall in September
Carbondale, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (11.02").
The months with the least snowfall are July, August and September (0").
Average snowfall days in September
Carbondale, CO
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (15.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Carbondale, 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 24min).
- Average sunshine in September: 11h and 1min
The months with the most sunshine are June and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).
Average sunshine days in September
Carbondale, CO
- Average sunshine days in September: 20.7 days
The month with the most sunshine days is June (21.9 days).
The month with the least sunshine days is February (10.7 days).
Average UV index in September
Carbondale, CO
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Carbondale, CO
- Average cloud cover in September: 12
The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 12).
Average visibility in September
Carbondale, CO
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Carbondale, Colorado, USA
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