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 subtle shift in Southglenn's weather is observed as August turns into September, with the average high temperature reducing from a warm 85.1°F (29.5°C) to a still moderately hot 78.1°F (25.6°C). Southglenn marks a considerable descent from the daytime apex, as the average temperature dips to a fresh 52.7°F (11.5°C) at night throughout September.Humidity
In September, the average relative humidity in Southglenn is 42%.Rainfall
In Southglenn, Colorado, during September, the rain falls for 3.6 days and regularly aggregates up to 0.12" (3mm) of precipitation. In Southglenn, during the entire year, the rain falls for 50.6 days and collects up to 2.91" (74mm) of precipitation.Snowfall
In Southglenn, snow does not fall in June through September.Daylight
The average length of the day in September in Southglenn is 12h and 26min.On the first day of September, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm MDT.
Sunshine
The average sunshine in September is 11.1h.UV index
The average daily maximum UV index in September in Southglenn is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the average September temperature in Southglenn?
What is the average humidity in September in Southglenn?
How many days does it rain in September in Southglenn?
When it does not snow in Southglenn?
Does it snow in Southglenn in September?
What is the average length of the day in September in Southglenn?
When is the sunrise / sunset in September in Southglenn?
How many hours of sunshine does Southglenn have in September?
What is the UV index intensity in September in Southglenn?
Average temperature in September
Southglenn, CO
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (41°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is December (21°F).
Average pressure in September
Southglenn, CO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in September
Southglenn, CO
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest months (with the lowest average wind speed) are August, September and December (6.2mph).
Average humidity in September
Southglenn, CO
- Average humidity in September: 42%
The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (41%).
Average rainfall in September
Southglenn, CO
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is July (0.51").
The driest months (with the least rainfall) are January and December (0.08").
Average rainfall days in September
Southglenn, CO
- Average rainfall days in September: 3.6 days
The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is November (1.7 days).
Average snowfall in September
Southglenn, CO
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Southglenn, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Southglenn, 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 July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).
Average sunshine days in September
Southglenn, CO
- Average sunshine days in September: 23.7 days
The month with the most sunshine days is December (28.3 days).
The month with the least sunshine days is July (19.7 days).
Average UV index in September
Southglenn, CO
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Southglenn, CO
- Average cloud cover in September: 14
The month with the most cloud cover is April (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in September
Southglenn, 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).
Southglenn, Colorado, USA
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