September weather forecastBonanza, CO
September
Weather in September
September, the first month of the autumn in Bonanza, is also an agreeable month, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 41.2°F (5.1°C).Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's warm 74.8°F (23.8°C) to a pleasant 68.5°F (20.3°C). Bonanza reports a considerable drop from daytime temperatures in September, recording an average nighttime figure of 41.2°F (5.1°C).Humidity
The average relative humidity in September is 51%.Rainfall
In Bonanza, in September, during 6 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 58.1 rainfall days, and 5.83" (148mm) of precipitation is accumulated.Snowfall
July through September are months without snowfall.Daylight
In Bonanza, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:33 pm. On the last day of September, in Bonanza, sunrise is at 7:00 am and sunset at 6:48 pm MDT.
Sunshine
The average sunshine in September is 10.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the UV index of 3 transforms into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bonanza, CO
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 41.2°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in September
Bonanza, CO
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is April (29.93"Hg).
Average wind speed in September
Bonanza, CO
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Bonanza, CO
- Average humidity in September: 51%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is June (41%).
Average rainfall in September
Bonanza, CO
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is January (0.2").
Average rainfall days in September
Bonanza, CO
- Average rainfall days in September: 6 days
The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (1.2 days).
Average snowfall in September
Bonanza, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are July, August and September (0").
Average snowfall days in September
Bonanza, CO
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (7.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Bonanza, 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 54min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Bonanza, CO
- Average sunshine days in September: 22.1 days
The month with the most sunshine days is November (25.5 days).
The month with the least sunshine days is July (15.6 days).
Average UV index in September
Bonanza, CO
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Bonanza, CO
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 32).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in September
Bonanza, CO
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
