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 transition into September subtly indicates a reduction in the average high-temperature, down to a pleasant 72.7°F (22.6°C) from August's warm 78.8°F (26°C). The nighttime temperature dips to a fresh 53.1°F (11.7°C) on average during September.Humidity
In Sinsinawa, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 11.6 days. Throughout September, 2.6" (66mm) of precipitation is accumulated. Throughout the year, there are 139 rainfall days, and 28.9" (734mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:28 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:44 pm CDT.
Sunshine
In Sinsinawa, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Sinsinawa?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Sinsinawa have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Sinsinawa, WI
- Average high temperature in September: 72.7°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 (25°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in September
Sinsinawa, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Sinsinawa, WI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Sinsinawa, WI
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Sinsinawa, WI
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is June (3.94").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Sinsinawa, WI
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Sinsinawa, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sinsinawa, 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
Sinsinawa, WI
- Average daylight in September: 12h and 3min
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 5min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Sinsinawa, WI
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Sinsinawa, WI
- Average UV index in September: 4
The months with the highest UV index are May, 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
Sinsinawa, WI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Sinsinawa, WI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Sinsinawa, Wisconsin, USA
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