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
In September, the meteorological conditions alter, with the average high-temperature shifting from a moderately hot 81.1°F (27.3°C) in August to a pleasant 71.2°F (21.8°C). Significant variation from daytime temperatures marks September, with the month recording a nightly average of 46.4°F (8°C).Humidity
In Bone, the average relative humidity in September is 45%.Rainfall
In Bone, in September, during 9.3 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Bone, during the entire year, the rain falls for 101.4 days and collects up to 12.72" (323mm) of precipitation.Snowfall
Months with snowfall in Bone are January through May, September through December. September is the first month it typically snows in Bone. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, in Bone, there are 85.8 snowfall days, and 40.94" (1040mm) of snow is accumulated.Daylight
The average length of the day in September in Bone is 12h and 29min.On the first day of September, sunrise is at 6:52 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:09 pm MDT.
Sunshine
In September, the average sunshine in Bone is 10h.UV index
In September, the average daily maximum UV index in Bone is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 3 turns into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the temperature in September in Bone?
What is the average humidity in September in Bone?
How many days does it rain in September in Bone?
When does it start snowing in Bone?
How many hours of daylight does Bone have in September?
What time are sunrise and sunset in September in Bone?
How long on average sun shines in September in Bone?
What is the UV index reading in September in Bone?
Average temperature in September
Bone, ID
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is December (27°F).
- Average low temperature in September: 46.4°F
The month with the highest average low temperature is July (52.7°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in September
Bone, ID
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Bone, ID
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in September
Bone, ID
- Average humidity in September: 45%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Bone, ID
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is May (1.54").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in September
Bone, ID
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Bone, ID
- Average snowfall in September: 0.2"
The month with the highest snowfall is January (8.11").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Bone, ID
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Bone, 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 0min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Bone, ID
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is July (19.8 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Bone, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Bone, ID
- Average cloud cover in September: 16
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Bone, ID
- 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, February and December (4mi).
Bone, Idaho, USA
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