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's arrival aligns with a minor decrease in average high-temperatures, from August's agreeable 70.2°F (21.2°C) to a refreshing 63.5°F (17.5°C). Despite the drastic temperature difference, Redvale records an average nighttime low of 39.6°F (4.2°C) throughout September.Humidity
The average relative humidity in September in Redvale is 56%.Rainfall
In Redvale, Colorado, in September, it is raining for 13.4 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, in Redvale, there are 125.7 rainfall days, and 18.11" (460mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Redvale. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Redvale, there are 91.5 snowfall days, and 66.1" (1679mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 25min.On the first day of September in Redvale, sunrise is at 6:44 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:57 pm MDT.
Sunshine
In Redvale, the average sunshine in September is 10.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Boost your sun resistance with garments that are densely woven yet spacious. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Redvale in September?
What is the average humidity in September in Redvale?
How much does it rain in Redvale in September?
When does it start snowing in Redvale?
How many hours of daylight does Redvale have in September?
When are sunrise and sunset in September in Redvale?
How many hours of sunshine does Redvale have in September?
What is the UV index reading in September in Redvale?
Average temperature in September
Redvale, CO
- Average high temperature in September: 63.5°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 39.6°F
The month with the highest average low temperature is July (46.2°F).
The coldest month (with the lowest average low temperature) is January (6.6°F).
Average pressure in September
Redvale, CO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is May (29.92"Hg).
Average wind speed in September
Redvale, CO
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is June (7.5mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).
Average humidity in September
Redvale, CO
- Average humidity in September: 56%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is June (42%).
Average rainfall in September
Redvale, CO
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is June (0.98").
Average rainfall days in September
Redvale, CO
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in September
Redvale, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is March (11.81").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Redvale, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Redvale, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).
Average sunshine days in September
Redvale, CO
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (6.6 days).
Average UV index in September
Redvale, CO
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Redvale, CO
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is June (Cloud cover 12).
Average visibility in September
Redvale, CO
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Redvale, Colorado, USA
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