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
September is characterized by a mild reduction in the average high-temperature, from a moderately hot 77.2°F (25.1°C) in August to an agreeable 70.9°F (21.6°C). Cascade records a significant temperature drop in September nights, lowering to an average of 48.2°F (9°C).Humidity
In Cascade, the average relative humidity in September is 51%.Rainfall
In Cascade, in September, during 10.5 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 120.3 rainfall days, and 18.7" (475mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 56.2 snowfall days, and 42.13" (1070mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:43 pm MDT.
Sunshine
The average sunshine in September is 10.9h.UV index
In Cascade, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Opt for tightly woven and loose clothing to enhance protection from the Sun. 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
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Cascade have in September?
How high is the UV index in September?
Average temperature in September
Cascade, CO
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in September: 48.2°F
The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is December (18.3°F).
Average pressure in September
Cascade, CO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).
Average wind speed in September
Cascade, CO
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Cascade, CO
- Average humidity in September: 51%
The month with the highest relative humidity is February (67%).
The month with the lowest relative humidity is June (46%).
Average rainfall in September
Cascade, CO
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is July (3.27").
The driest months (with the least rainfall) are November and December (0.63").
Average rainfall days in September
Cascade, CO
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in September
Cascade, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (7.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Cascade, CO
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Cascade, 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 months with the most sunshine are June and August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Cascade, CO
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in September
Cascade, CO
- Average UV index in September: 4
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, October, November and December (UV index 2).
Average cloud cover in September
Cascade, CO
- Average cloud cover in September: 17
The month with the most cloud cover is April (Cloud cover 29).
The months with the least cloud cover are September and November (Cloud cover 17).
Average visibility in September
Cascade, 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).
Cascade, Colorado, USA
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