September weather forecastOuray, CO
September
Weather in September
The month of September initiates the transition from summer to fall in Ouray, with temperatures lowering to between 36.1°F (2.3°C) and 57.9°F (14.4°C). Rainfall decreases to 2.05" (52mm), indicating the incoming drought period. Crisp mornings, blue ski days and the beginning of the Aspens turning a magnificent gold, make September a special month in Ouray. The incoming autumn trails beckon hiking enthusiasts, while the changing colored tree lines provide stunning panoramas. The beautiful fall weather makes visiting surrounding mines, ghost towns, and historical sites a delightful experience.Temperature
The advent of September observes an average high-temperature of a moderate 57.9°F (14.4°C), nearly identical to August's 63.1°F (17.3°C). A pronounced dip becomes evident during the nights in September as Ouray logs a consistent average temperature of 36.1°F (2.3°C).Humidity
In Ouray, the average relative humidity in September is 62%.Rainfall
In Ouray, in September, it is raining for 13 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, in Ouray, there are 98.2 rainfall days, and 26.65" (677mm) of precipitation is accumulated.Snowfall
January through June, August through December are months with snowfall. In September, it is snowing for 2.4 days. Throughout September, 1.77" (45mm) of snow is accumulated. Throughout the year, there are 102 snowfall days, and 101.02" (2566mm) of snow is accumulated.Daylight
In Ouray, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of September, in Ouray, sunrise is at 7:06 am and sunset at 6:54 pm MDT.
Sunshine
The average sunshine in September is 10.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ouray, CO
- Average high temperature in September: 57.9°F
The warmest month (with the highest average high temperature) is July (65.1°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 36.1°F
The month with the highest average low temperature is July (43.2°F).
The coldest month (with the lowest average low temperature) is January (2.8°F).
Average pressure in September
Ouray, CO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is May (29.92"Hg).
Average wind speed in September
Ouray, CO
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is January (5mph).
Average humidity in September
Ouray, CO
- Average humidity in September: 62%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (47%).
Average rainfall in September
Ouray, CO
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Ouray, CO
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (23.8 days).
The months with the least rainy days are January and February (1.3 days).
Average snowfall in September
Ouray, CO
- Average snowfall in September: 1.77"
The month with the highest snowfall is March (16.26").
The month with the least snowfall is July (0").
Average snowfall days in September
Ouray, CO
- Average snowfall days in September: 2.4 days
The month with the highest number of snowfall days is April (16.5 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Ouray, CO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 42min).
Average sunshine days in September
Ouray, CO
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (5.3 days).
Average UV index in September
Ouray, CO
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Ouray, CO
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in September
Ouray, CO
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
