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
September suggests a modest reduction in the average high-temperature, shifting from a warm 81°F (27.2°C) in August to a pleasant 69.6°F (20.9°C). Priest River documents a striking divergence from daytime highs, with an average nighttime temperature of 43.5°F (6.4°C) in September.Humidity
In September, the average relative humidity in Priest River is 60%.Rainfall
In Priest River, during September, the rain falls for 8.2 days and regularly aggregates up to 0.83" (21mm) of precipitation. In Priest River, during the entire year, the rain falls for 140.8 days and collects up to 23.03" (585mm) of precipitation.Snowfall
Months with snowfall in Priest River are January through April, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.43" (11mm) of snow. In Priest River, during the entire year, snow falls for 77 days and aggregates up to 59.17" (1503mm) of snow.Daylight
In September, the average length of the day in Priest River is 12h and 34min.On the first day of September, sunrise is at 6:06 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:27 pm PDT.
Sunshine
In Priest River, the average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. To guard against the harmful effects of the Sun, minimize exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. 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
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
How many hours of daylight does Priest River have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Priest River, ID
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (29.5°F).
- Average low temperature in September: 43.5°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure in September
Priest River, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in September
Priest River, ID
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.3mph).
Average humidity in September
Priest River, ID
- Average humidity in September: 60%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (51%).
Average rainfall in September
Priest River, ID
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is January (3.31").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in September
Priest River, ID
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (3.9 days).
Average snowfall in September
Priest River, ID
- Average snowfall in September: 0.43"
The month with the highest snowfall is January (17.44").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in September
Priest River, ID
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (17.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Priest River, ID
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days in September
Priest River, ID
- Average sunshine days in September: 20.3 days
The month with the most sunshine days is August (25.1 days).
The months with the least sunshine days are February and March (7.8 days).
Average UV index in September
Priest River, 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, November and December (UV index 1).
Average cloud cover in September
Priest River, ID
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Priest River, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
Priest River, Idaho, USA
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