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
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a tropical 86.7°F (30.4°C) in August to a warm 79.5°F (26.4°C). Clarkville experiences a significant downturn from peak daytime temperatures throughout September, with the average low-temperature dipping to a refreshing 56.8°F (13.8°C).Humidity
With an average relative humidity of 49%, September is the least humid month.Rainfall
In Clarkville, Colorado, during September, the rain falls for 7 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Clarkville, during the entire year, the rain falls for 97.4 days and collects up to 12.52" (318mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 34.6 snowfall days, and 14.09" (358mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:18 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:33 pm MDT.
Sunshine
In Clarkville, the average sunshine in September is 10.1h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Clarkville in September?
What is the least humid month in Clarkville?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
How many hours of daylight does Clarkville have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Clarkville have in September?
What is the UV index reading in September?
Average temperature in September
Clarkville, CO
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (39.9°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in September
Clarkville, CO
- Average pressure in September: 29.93"Hg
The months with the highest atmospheric pressure are January and December (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Clarkville, CO
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity in September
Clarkville, CO
- Average humidity in September: 49%
The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is September (49%).
Average rainfall in September
Clarkville, CO
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is May (1.93").
The driest months (with the least rainfall) are January and November (0.43").
Average rainfall days in September
Clarkville, CO
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is December (3.5 days).
Average snowfall in September
Clarkville, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Clarkville, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (7.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Clarkville, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in September
Clarkville, CO
- Average sunshine days in September: 20.8 days
The month with the most sunshine days is December (23 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in September
Clarkville, CO
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Clarkville, CO
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Clarkville, 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).
Clarkville, Colorado, USA
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