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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a warm 75.4°F (24.1°C) in August to an agreeable 68.2°F (20.1°C). Rib Mountain's temperature tends to fall to an average low of 49.6°F (9.8°C) during the nights of September.Humidity
In Rib Mountain, the average relative humidity in September is 80%.Rainfall
In Rib Mountain, in September, it is raining for 11 days, with typically 1.38" (35mm) of accumulated precipitation. In Rib Mountain, during the entire year, the rain falls for 118.3 days and collects up to 17.83" (453mm) of precipitation.Snowfall
June through September are months without snowfall in Rib Mountain.Daylight
The average length of the day in September in Rib Mountain is 12h and 31min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:35 pm. On the last day of September, in Rib Mountain, Wisconsin, sunrise is at 6:56 am and sunset at 6:40 pm CDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In Rib Mountain, Wisconsin, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the UV index of 3 transforms into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What are September temperatures in Rib Mountain?
What is the average humidity in September in Rib Mountain?
How many days does it rain in September in Rib Mountain?
When it does not snow in Rib Mountain?
Does it snow in Rib Mountain in September?
What is the average length of the day in September in Rib Mountain?
What time are sunrise and sunset in September in Rib Mountain?
How many hours of sunshine does Rib Mountain have in September?
How high is the UV index in September in Rib Mountain?
Average temperature in September
Rib Mountain, WI
- Average high temperature in September: 68.2°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in September
Rib Mountain, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Rib Mountain, WI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Rib Mountain, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Rib Mountain, WI
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Rib Mountain, WI
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in September
Rib Mountain, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Rib Mountain, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rib Mountain, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Rib Mountain, WI
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in September
Rib Mountain, WI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Rib Mountain, WI
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Rib Mountain, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
Rib Mountain, Wisconsin, USA
Weather forecast for your location
2. Allow the app to use your location
