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
September brings a slight decrease in temperature, down from a moderately hot 75.7°F (24.3°C) in August to a pleasant 68.9°F (20.5°C). September is noted for a mean low-temperature of 54.7°F (12.6°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In Belgium, in September, during 10.3 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Belgium, during the entire year, the rain falls for 111.2 days and collects up to 13.62" (346mm) of precipitation.Snowfall
In Belgium, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:16 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:33 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 3 during September translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Belgium have in September?
How high is the UV index in September?
Average temperature in September
Belgium, WI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in September
Belgium, WI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Belgium, WI
- Average wind speed in September: 8.7mph
The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Belgium, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (77%).
Average rainfall in September
Belgium, WI
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is July (1.81").
The driest month (with the least rainfall) is December (0.51").
Average rainfall days in September
Belgium, WI
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in September
Belgium, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Belgium, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Belgium, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Belgium, WI
- Average sunshine days in September: 17.5 days
The months with the most sunshine days are November and December (18.5 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in September
Belgium, 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, November and December (UV index 1).
Average cloud cover in September
Belgium, WI
- Average cloud cover in September: 31
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 29).
Average visibility in September
Belgium, 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).
Belgium, Wisconsin, USA
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