September weather forecastPowderhorn, CO
September
Weather in September
September, the first month of the autumn in Powderhorn, is still a refreshing month, with an average temperature varying between 67.1°F (19.5°C) and 37.9°F (3.3°C).Temperature
In the transition to September, Powderhorn observes a minor drop in the average high-temperature, shifting from a warm 74.1°F (23.4°C) in August to an enjoyable 67.1°F (19.5°C). Powderhorn registers a prominent dip from daytime highs, with an average of 37.9°F (3.3°C) during the nights of September.Humidity
The average relative humidity in September is 52%.Rainfall
In Powderhorn, during September, the rain falls for 8 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 99.9 rainfall days, and 9.76" (248mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, August through December. In Powderhorn, in September, snow falls for 0.3 days, with typically accumulated 0.04" (1mm) of snow. Throughout the year, there are 85 snowfall days, and 42.87" (1089mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:38 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:52 pm MDT.
Sunshine
In September, the average sunshine in Powderhorn, Colorado, is 11.2h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 3 in September transforms into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Powderhorn, CO
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 37.9°F
The month with the highest average low temperature is July (44.1°F).
The coldest month (with the lowest average low temperature) is January (1.8°F).
Average pressure in September
Powderhorn, CO
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The months with the lowest atmospheric pressure are April and May (29.94"Hg).
Average wind speed in September
Powderhorn, CO
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is June (6.4mph).
The calmest months (with the lowest average wind speed) are January and December (4.5mph).
Average humidity in September
Powderhorn, CO
- Average humidity in September: 52%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (44%).
Average rainfall in September
Powderhorn, CO
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Powderhorn, CO
- Average rainfall days in September: 8 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (4.2 days).
Average snowfall in September
Powderhorn, CO
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (7.13").
The month with the least snowfall is July (0").
Average snowfall days in September
Powderhorn, CO
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is February (14.3 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Powderhorn, 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: 11h and 12min
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 18min).
Average sunshine days in September
Powderhorn, CO
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (9 days).
Average UV index in September
Powderhorn, CO
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Powderhorn, CO
- Average cloud cover in September: 12
The month with the most cloud cover is February (Cloud cover 34).
The months with the least cloud cover are June and September (Cloud cover 12).
Average visibility in September
Powderhorn, CO
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
