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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a hot 87.8°F (31°C) in August to a moderately hot 80.2°F (26.8°C). Idalia experiences a significant reduction from daytime highs with an average low-temperature of 58.1°F (14.5°C) in September.Humidity
July and September, with an average relative humidity of 49%, are the least humid months in Idalia.Rainfall
In Idalia, Colorado, in September, it is raining for 9 days, with typically 0.98" (25mm) of accumulated precipitation. In Idalia, during the entire year, the rain falls for 100.9 days and collects up to 14.02" (356mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 22.8 snowfall days, and 10.08" (256mm) of snow is accumulated.Daylight
The average length of the day in September in Idalia, Colorado, is 12h and 26min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:19 pm. On the last day of September, in Idalia, sunrise is at 6:45 am and sunset at 6:32 pm MDT.
Sunshine
In September, the average sunshine is 9.8h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 5 in September suggests the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What is the temperature in September in Idalia?
What are the least humid months in Idalia?
What is the average humidity in September in Idalia?
How much does it rain in Idalia in September?
When does it start to snow in Idalia?
What is the average length of the day in September in Idalia?
When is the sunrise / sunset in September in Idalia?
How long on average sun shines in September in Idalia?
What is the UV index intensity in September in Idalia?
Average temperature in September
Idalia, CO
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is December (40.6°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in September
Idalia, CO
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in September
Idalia, CO
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (12.3mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in September
Idalia, CO
- Average humidity in September: 49%
The months with the highest relative humidity are January, February and December (63%).
The months with the lowest relative humidity are July and September (49%).
Average rainfall in September
Idalia, CO
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January, February and December (0.28").
Average rainfall days in September
Idalia, CO
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (1.8 days).
Average snowfall in September
Idalia, CO
- Average snowfall in September: 0.08"
The month with the highest snowfall is October (1.93").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Idalia, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Idalia, 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: 9h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in September
Idalia, CO
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is December (26 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
Idalia, CO
- Average UV index in September: 5
The months with the highest UV index are June and 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
Idalia, CO
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Idalia, 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).
Idalia, Colorado, USA
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