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
With September's onset, the weather reveals a slight temperature decrease, transitioning from 82.2°F (27.9°C) in August to a still warm 76.8°F (24.9°C). La Crosse throughout September, records an average low-temperature of 57.4°F (14.1°C).Humidity
The average relative humidity in September in La Crosse is 75%.Rainfall
In September, in La Crosse, the rain falls for 10.2 days. Throughout September, 1.77" (45mm) of precipitation is accumulated. Throughout the year, there are 127.6 rainfall days, and 21.02" (534mm) of precipitation is accumulated.Snowfall
In La Crosse, snow does not fall in May through September.Daylight
In September, the average length of the day in La Crosse is 12h and 27min.On the first day of September in La Crosse, Illinois, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:47 pm CDT.
Sunshine
In September, the average sunshine in La Crosse is 9.3h.UV index
The average daily maximum UV index in September in La Crosse is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 5 in September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. To guard against the harmful effects of the Sun, minimize exposure during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What are the temperatures in La Crosse in September?
What is the average humidity in September in La Crosse?
How many days does it rain in September in La Crosse?
When it does not snow in La Crosse?
Does it snow in La Crosse in September?
What is the average length of the day in September in La Crosse?
When is the sunrise / sunset in September in La Crosse?
How many hours of sunshine does La Crosse have in September?
What is the UV index reading in September in La Crosse?
Average temperature in September
La Crosse, IL
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
La Crosse, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
La Crosse, IL
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).
Average humidity in September
La Crosse, IL
- Average humidity in September: 75%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
La Crosse, IL
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
La Crosse, IL
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in September
La Crosse, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
La Crosse, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 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
La Crosse, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
La Crosse, IL
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is December (20 days).
The months with the least sunshine days are May and June (11.8 days).
Average UV index in September
La Crosse, IL
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
La Crosse, IL
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in September
La Crosse, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
La Crosse, Illinois, USA
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