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
Brussels's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 74.1°F (23.4°C) in August to an enjoyable 67.1°F (19.5°C). An average low-temperature of 56.1°F (13.4°C) is observed in Brussels during the September nights.Humidity
The average relative humidity in September in Brussels is 78%.Rainfall
In September, the rain falls for 9.9 days. Throughout September, 0.79" (20mm) of precipitation is accumulated. In Brussels, during the entire year, the rain falls for 106.4 days and collects up to 10.35" (263mm) of precipitation.Snowfall
June through September are months without snowfall in Brussels.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:13 am and sunset at 7:26 pm. On the last day of September, in Brussels, sunrise is at 6:48 am and sunset at 6:32 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In Brussels, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Brussels?
What is the average humidity in September in Brussels?
How many days does it rain in September in Brussels?
When it does not snow in Brussels?
Does it snow in Brussels in September?
What is the average length of the day in September in Brussels?
When is the sunrise / sunset in September in Brussels?
How long on average sun shines in September in Brussels?
What is the UV index intensity in September in Brussels?
Average temperature in September
Brussels, WI
- Average high temperature in September: 67.1°F
The warmest months (with the highest average high temperature) are July and August (74.1°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is August (61.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in September
Brussels, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Brussels, WI
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).
Average humidity in September
Brussels, WI
- Average humidity in September: 78%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April, May, October and November (77%).
Average rainfall in September
Brussels, WI
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is May (1.3").
The driest months (with the least rainfall) are February and November (0.55").
Average rainfall days in September
Brussels, WI
- Average rainfall days in September: 9.9 days
The months with the highest number of rainy days are June and July (11.8 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Brussels, WI
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brussels, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brussels, 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 54min).
- Average sunshine in September: 8h and 5min
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 12min).
Average sunshine days in September
Brussels, WI
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in September
Brussels, 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 and December (UV index 1).
Average cloud cover in September
Brussels, WI
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Brussels, WI
- 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).
Brussels, Wisconsin, USA
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