September weather forecastBoncarbo, CO
September
Weather in September
The first month of the autumn, September, is still a warm month in Boncarbo, Colorado, with an average temperature varying between 50.7°F (10.4°C) and 73.6°F (23.1°C).Temperature
With the beginning of September, the average high-temperature shows a small decrease, transitioning from 80.1°F (26.7°C) in August to a still moderately hot 73.6°F (23.1°C). Despite high daytime temperatures, the average temperature lowers to a cool 50.7°F (10.4°C) during September nights.Humidity
In September, the average relative humidity is 51%.Rainfall
In Boncarbo, in September, during 11.6 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Boncarbo, during the entire year, the rain falls for 102.5 days and collects up to 12.95" (329mm) of precipitation.Snowfall
In Boncarbo, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:30 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:42 pm MDT.
Sunshine
In September, the average sunshine is 10.9h.UV index
The average daily maximum UV index in September in Boncarbo is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 5 in September transforms into this advice:
Take precautions - Protection against sun damage is advised. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Boncarbo, CO
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (40.3°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (21°F).
Average pressure in September
Boncarbo, CO
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is April (29.87"Hg).
Average wind speed in September
Boncarbo, CO
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Boncarbo, CO
- Average humidity in September: 51%
The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (41%).
Average rainfall in September
Boncarbo, CO
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is November (0.39").
Average rainfall days in September
Boncarbo, CO
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Boncarbo, CO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Boncarbo, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Boncarbo, CO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Boncarbo, CO
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is November (24.1 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in September
Boncarbo, CO
- Average UV index in September: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Boncarbo, CO
- Average cloud cover in September: 16
The months with the most cloud cover are February and April (Cloud cover 23).
The month with the least cloud cover is October (Cloud cover 15).
Average visibility in September
Boncarbo, 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).
