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 brings a minor decrease, with the average high-temperature reducing from a moderately hot 78.1°F (25.6°C) in August to a refreshing 67.8°F (19.9°C). A stark contrast in day to night temperatures can be seen in September, with an average low-temperature of 41.7°F (5.4°C).Humidity
In Kellogg, Idaho, the average relative humidity in September is 62%.Rainfall
In Kellogg, in September, it is raining for 9.1 days, with typically 0.87" (22mm) of accumulated precipitation. In Kellogg, during the entire year, the rain falls for 144.3 days and collects up to 27.6" (701mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.28" (7mm) of snow. In Kellogg, during the entire year, snow falls for 81.2 days and aggregates up to 73.58" (1869mm) of snow.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September, sunrise is at 6:04 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:25 pm PDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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 much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Kellogg have in September?
What is the UV index intensity in September?
Average temperature in September
Kellogg, ID
- Average high temperature in September: 67.8°F
The warmest months (with the highest average high temperature) are July and August (78.1°F).
The month with the lowest average high temperature is December (30°F).
- Average low temperature in September: 41.7°F
The month with the highest average low temperature is August (48.4°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure in September
Kellogg, 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, July and August (29.93"Hg).
Average wind speed in September
Kellogg, ID
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest month (with the lowest average wind speed) is December (4mph).
Average humidity in September
Kellogg, ID
- Average humidity in September: 62%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in September
Kellogg, ID
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is January (4.21").
The driest months (with the least rainfall) are July and August (0.43").
Average rainfall days in September
Kellogg, ID
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is April (18 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in September
Kellogg, ID
- Average snowfall in September: 0.28"
The month with the highest snowfall is January (20.83").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Kellogg, ID
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (17.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Kellogg, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 3h and 30min).
Average sunshine days in September
Kellogg, ID
- Average sunshine days in September: 20.2 days
The months with the most sunshine days are July and August (24.2 days).
The month with the least sunshine days is March (7 days).
Average UV index in September
Kellogg, 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
Kellogg, ID
- Average cloud cover in September: 25
The months with the most cloud cover are January and December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Kellogg, ID
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August and September (6mi).
The month with the lowest visibility is January (3mi).
Kellogg, Idaho, USA
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