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
A minor decrease in the average high-temperature is observed during September, shifting from a warm 77.5°F (25.3°C) in August to an agreeable 71.6°F (22°C). During the nights in September, the temperature in Lake Geneva averages to a fresh 53.6°F (12°C).Humidity
In Lake Geneva, Wisconsin, the average relative humidity in September is 81%.Rainfall
In September, in Lake Geneva, the rain falls for 12.4 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. Throughout the year, there are 139.3 rainfall days, and 25.79" (655mm) of precipitation is accumulated.Snowfall
In Lake Geneva, snow does not fall in June through September.Daylight
The average length of the day in September in Lake Geneva is 12h and 29min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:27 pm. On the last day of September, in Lake Geneva, Wisconsin, sunrise is at 6:50 am and sunset at 6:36 pm CDT.
Sunshine
In Lake Geneva, the average sunshine in September is 8.5h.UV index
In Lake Geneva, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Lake Geneva?
What is the average humidity in September in Lake Geneva?
How many days does it rain in September in Lake Geneva?
When it does not snow in Lake Geneva?
Does it snow in Lake Geneva in September?
How many hours of daylight does Lake Geneva have in September?
When are sunrise and sunset in September in Lake Geneva?
How many hours of sunshine does Lake Geneva have in September?
What is the UV index reading in September in Lake Geneva?
Average temperature in September
Lake Geneva, WI
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in September
Lake Geneva, WI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Lake Geneva, WI
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are February and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Lake Geneva, WI
- Average humidity in September: 81%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in September
Lake Geneva, WI
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is December (1.14").
Average rainfall days in September
Lake Geneva, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in September
Lake Geneva, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lake Geneva, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lake Geneva, WI
- 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: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Lake Geneva, WI
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in September
Lake Geneva, WI
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Lake Geneva, WI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in September
Lake Geneva, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Lake Geneva, Wisconsin, USA
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