September weather forecastMount Horeb, WI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Mount Horeb, Wisconsin, with an average temperature varying between 51.8°F (11°C) and 71.2°F (21.8°C).Temperature
With the onset of September, Mount Horeb's climate undergoes a slight change as the average high-temperature moves from a moderately hot 77.5°F (25.3°C) in August to an agreeable 71.2°F (21.8°C). An average nighttime temperature of 51.8°F (11°C) is noted during the month of September.Humidity
In Mount Horeb, the average relative humidity in September is 81%.Rainfall
In Mount Horeb, during September, the rain falls for 11.8 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in Mount Horeb, there are 128 rainfall days, and 22.68" (576mm) of precipitation is accumulated.Snowfall
In Mount Horeb, 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 the month, sunrise is at 6:24 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:41 pm CDT.
Sunshine
In Mount Horeb, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mount Horeb, WI
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in September
Mount Horeb, WI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Mount Horeb, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Mount Horeb, WI
- Average humidity in September: 81%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April, October and November (78%).
Average rainfall in September
Mount Horeb, WI
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in September
Mount Horeb, WI
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Mount Horeb, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mount Horeb, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Horeb, WI
- Average daylight in September: 12h and 30min
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: 8h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Mount Horeb, WI
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Mount Horeb, 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
Mount Horeb, WI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Mount Horeb, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
