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
Rupert in September experiences a subtle temperature decline, with average high-temperatures reducing from a tropical 86.9°F (30.5°C) in August to a warm 76.1°F (24.5°C). Following the sharp contrast to daytime warmth, an average nighttime temperature of 53.8°F (12.1°C) gets registered during September.Humidity
In September, the average relative humidity in Rupert is 35%.Rainfall
In Rupert, Idaho, in September, during 6.3 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. Throughout the year, in Rupert, Idaho, there are 105.2 rainfall days, and 10.63" (270mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. In Rupert, during the entire year, snow falls for 50.9 days and aggregates up to 24.57" (624mm) of snow.Daylight
In Rupert, Idaho, the average length of the day in September is 12h and 28min.On the first day of September in Rupert, Idaho, sunrise is at 7:00 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:17 pm MDT.
Sunshine
The average sunshine in September in Rupert is 9.6h.UV index
In Rupert, Idaho, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Rupert in September?
What is the average humidity in September in Rupert?
How much does it rain in Rupert in September?
When does it start snowing in Rupert?
What is the average length of the day in September in Rupert?
When is the sunrise / sunset in September in Rupert?
How long on average sun shines in September in Rupert?
What is the UV index intensity in September in Rupert?
Average temperature in September
Rupert, ID
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in September: 53.8°F
The months with the highest average low temperature are July and August (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.6°F).
Average pressure in September
Rupert, ID
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Rupert, ID
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is January (7.1mph).
Average humidity in September
Rupert, ID
- Average humidity in September: 35%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (30%).
Average rainfall in September
Rupert, ID
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Rupert, ID
- Average rainfall days in September: 6.3 days
The months with the highest number of rainy days are March and April (14 days).
The months with the least rainy days are July and August (5.2 days).
Average snowfall in September
Rupert, ID
- Average snowfall in September: 0.16"
The month with the highest snowfall is December (6.54").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Rupert, ID
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Rupert, 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 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Rupert, ID
- Average sunshine days in September: 21.6 days
The month with the most sunshine days is July (22.6 days).
The month with the least sunshine days is March (12 days).
Average UV index in September
Rupert, ID
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Rupert, ID
- Average cloud cover in September: 14
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Rupert, ID
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Rupert, Idaho, USA
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