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 brings a slight decrease in the average high-temperature, shifting from a warm 74.8°F (23.8°C) in August to an agreeable 68.5°F (20.3°C). September witnesses a substantial contrast between the daytime highs and the average low of 43.7°F (6.5°C).Humidity
In September, the average relative humidity is 51%.Rainfall
In San Acacio, in September, during 7.1 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In San Acacio, during the entire year, the rain falls for 72.2 days and collects up to 8.82" (224mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. In San Acacio, during the entire year, snow falls for 57.6 days and aggregates up to 28.58" (726mm) of snow.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:33 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm MDT.
Sunshine
In September, the average sunshine in San Acacio is 11h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, an average UV index of 4 transforms into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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 snowing?
How many hours of daylight does San Acacio have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does San Acacio have in September?
How high is the UV index in September?
Average temperature in September
San Acacio, CO
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 43.7°F
The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in September
San Acacio, CO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed in September
San Acacio, CO
- Average wind speed in September: 6.5mph
The windiest months (with the highest average wind speed) are April and May (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in September
San Acacio, CO
- Average humidity in September: 51%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (38%).
Average rainfall in September
San Acacio, CO
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is November (0.43").
Average rainfall days in September
San Acacio, CO
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is November (1.3 days).
Average snowfall in September
San Acacio, CO
- Average snowfall in September: 0.2"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are July and August (0").
Average snowfall days in September
San Acacio, CO
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
San Acacio, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 30min).
Average sunshine days in September
San Acacio, CO
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is October (24.1 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
San Acacio, 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, March, October, November and December (UV index 2).
Average cloud cover in September
San Acacio, CO
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are June and October (Cloud cover 14).
Average visibility in September
San Acacio, 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).
San Acacio, Colorado, USA
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