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 beginning of September brings a slight decrease in the average high-temperature, transitioning from a moderately hot 24.8°C (76.6°F) in August to a pleasant 21.1°C (70°F). Nighttime temperatures in September average to a mild 13°C (55.4°F) in Menomonee Falls.Humidity
In Menomonee Falls, the average relative humidity in September is 79%.Rainfall
In Menomonee Falls, in September, during 12.4 rainfall days, 55mm (2.17") of precipitation is typically accumulated. Throughout the year, in Menomonee Falls, there are 139.2 rainfall days, and 642mm (25.28") of precipitation is accumulated.Snowfall
In Menomonee Falls, snow does not fall in May through September.Daylight
In September, the average length of the day in Menomonee Falls is 12h and 29min.On the first day of September, sunrise is at 6:17 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:34 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the temperature in September in Menomonee Falls?
What is the average humidity in September in Menomonee Falls?
How much does it rain in Menomonee Falls in September?
When it does not snow in Menomonee Falls?
Does it snow in Menomonee Falls in September?
How many hours of daylight does Menomonee Falls have in September?
What time are sunrise and sunset in September in Menomonee Falls?
How many hours of sunshine does Menomonee Falls have in September?
What is the UV index reading in September in Menomonee Falls?
Average temperature in September
Menomonee Falls, WI
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in September: 13°C
The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is January (-9.8°C).
Average pressure in September
Menomonee Falls, WI
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is January (1019.1mbar).
The month with the lowest atmospheric pressure is June (1013mbar).
Average wind speed in September
Menomonee Falls, WI
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is January (17.8km/h).
The calmest months (with the lowest average wind speed) are July and August (11.3km/h).
Average humidity in September
Menomonee Falls, WI
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Menomonee Falls, WI
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is May (79mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in September
Menomonee Falls, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Menomonee Falls, WI
- Average snowfall in September: 0mm
The month with the highest snowfall is January (102mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Menomonee Falls, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Menomonee Falls, 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Menomonee Falls, WI
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is December (15.9 days).
The month with the least sunshine days is April (12 days).
Average UV index in September
Menomonee Falls, WI
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Menomonee Falls, WI
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Menomonee Falls, WI
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
Menomonee Falls, Wisconsin, USA
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