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
A shift in the average high-temperature occurs in September, reducing from a hot 89.4°F (31.9°C) in August to a warm 79.2°F (26.2°C). Throughout September, Bruneau witnesses a consistent average low-temperature of 57.7°F (14.3°C).Humidity
In September, the average relative humidity is 32%.Rainfall
In Bruneau, in September, it is raining for 5.5 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, there are 100.2 rainfall days, and 7.48" (190mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 7:08 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 7:25 pm MDT.
Sunshine
The average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Bruneau, ID
- Average high temperature in September: 79.2°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in September
Bruneau, ID
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.26"Hg).
The months with the lowest atmospheric pressure are June and August (29.88"Hg).
Average wind speed in September
Bruneau, ID
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest months (with the lowest average wind speed) are January and September (6.5mph).
Average humidity in September
Bruneau, ID
- Average humidity in September: 32%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (25%).
Average rainfall in September
Bruneau, ID
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is December (1.06").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in September
Bruneau, ID
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (14.3 days).
The months with the least rainy days are July and August (3.7 days).
Average snowfall in September
Bruneau, ID
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Bruneau, ID
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bruneau, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Bruneau, ID
- Average sunshine days in September: 22.2 days
The month with the most sunshine days is July (24 days).
The month with the least sunshine days is March (13.6 days).
Average UV index in September
Bruneau, ID
- Average UV index in September: 5
The month with the highest UV index is 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
Bruneau, ID
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in September
Bruneau, ID
- 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).
Bruneau, Idaho, USA
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