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
The start of September involves a temperature drop, moving from a warm 77.7°F (25.4°C) in August to an agreeable 68°F (20°C). In September, a remarkable difference from daytime highs is noted, as Nounan records an average temperature of 42.3°F (5.7°C) during the night.Humidity
In Nounan, Idaho, the average relative humidity in September is 49%.Rainfall
In Nounan, in September, during 9.1 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Nounan, during the entire year, the rain falls for 117.5 days and collects up to 20.24" (514mm) of precipitation.Snowfall
Months with snowfall in Nounan, Idaho, are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.35" (9mm) of snow. In Nounan, Idaho, during the entire year, snow falls for 116.1 days and aggregates up to 91.14" (2315mm) of snow.Daylight
In Nounan, the average length of the day in September is 12h and 28min.On the first day of September in Nounan, sunrise is at 6:51 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:08 pm MDT.
Sunshine
The average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What is the average September temperature in Nounan?
What is the average humidity in September in Nounan?
How much does it rain in Nounan in September?
When does it start to snow in Nounan?
What is the average length of the day in September in Nounan?
What time are sunrise and sunset in September in Nounan?
How long on average sun shines in September in Nounan?
What is the UV index reading in September in Nounan?
Average temperature in September
Nounan, ID
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in September: 42.3°F
The month with the highest average low temperature is July (48.9°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in September
Nounan, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Nounan, ID
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).
Average humidity in September
Nounan, ID
- Average humidity in September: 49%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Nounan, ID
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in September
Nounan, ID
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Nounan, ID
- Average snowfall in September: 0.35"
The month with the highest snowfall is February (18.39").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Nounan, ID
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (21.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Nounan, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 1min
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
Nounan, ID
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in September
Nounan, ID
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Nounan, ID
- Average cloud cover in September: 15
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Nounan, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Nounan, Idaho, USA
Weather forecast for your location
2. Allow the app to use your location
