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
Highlands Ranch's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 84.4°F (29.1°C) in August to a still warm 77.7°F (25.4°C). Highlands Ranch encounters a significant temperature differential, with an average low-temperature of 52.2°F (11.2°C) during September nights.Humidity
In September, the average relative humidity is 43%.Rainfall
In Highlands Ranch, Colorado, in September, it is raining for 6 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 77.1 rainfall days, and 10.16" (258mm) of precipitation is accumulated.Snowfall
In Highlands Ranch, snow does not fall in June through September.Daylight
In Highlands Ranch, Colorado, the average length of the day in September 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 is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Take precautions - Protection against sun damage is advised. To guard against the harmful effects of the Sun, minimize exposure during midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What is the usual temperature for Highlands Ranch in September?
What is the average humidity in September in Highlands Ranch?
How much does it rain in Highlands Ranch in September?
When it does not snow in Highlands Ranch?
Does it snow in Highlands Ranch in September?
How many hours of daylight does Highlands Ranch have in September?
When is the sunrise / sunset in September in Highlands Ranch?
How long on average sun shines in September in Highlands Ranch?
How high is the UV index in September in Highlands Ranch?
Average temperature in September
Highlands Ranch, CO
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in September
Highlands Ranch, 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
Highlands Ranch, CO
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are August and September (6.4mph).
Average humidity in September
Highlands Ranch, CO
- Average humidity in September: 43%
The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (42%).
Average rainfall in September
Highlands Ranch, CO
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Highlands Ranch, CO
- Average rainfall days in September: 6 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in September
Highlands Ranch, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Highlands Ranch, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Highlands Ranch, 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 month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in September
Highlands Ranch, CO
- Average sunshine days in September: 22 days
The month with the most sunshine days is October (24.5 days).
The month with the least sunshine days is July (16.3 days).
Average UV index in September
Highlands Ranch, 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
Highlands Ranch, CO
- Average cloud cover in September: 14
The months with the most cloud cover are April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in September
Highlands Ranch, 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).
Highlands Ranch, Colorado, USA
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