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 start of September involves a subtle temperature drop, shifting from a warm 78.4°F (25.8°C) in August to a pleasant 71.1°F (21.7°C). During the month of September, the temperature in Hillsboro, Wisconsin, generally drops to a low average of 51.1°F (10.6°C).Humidity
In Hillsboro, Wisconsin, the average relative humidity in September is 80%.Rainfall
In Hillsboro, in September, it is raining for 12 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, there are 131.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.Snowfall
In Hillsboro, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:25 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:43 pm CDT.
Sunshine
In Hillsboro, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Exercise prevention - Warding off sunburn is urged. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Hillsboro have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Hillsboro have in September?
How high is the UV index in September?
Average temperature in September
Hillsboro, WI
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (22.1°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in September
Hillsboro, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Hillsboro, WI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Hillsboro, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Hillsboro, WI
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Hillsboro, WI
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in September
Hillsboro, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hillsboro, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hillsboro, 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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Hillsboro, WI
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in September
Hillsboro, WI
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Hillsboro, WI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Hillsboro, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
Hillsboro, Wisconsin, USA
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