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
With the onset of September, Potosi's average high-temperature slightly adjusts, moderately receding from August's warm 78.4°F (25.8°C) to a pleasant 72.3°F (22.4°C). Potosi experiences a nighttime temperature average of 53.2°F (11.8°C) during September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Potosi, in September, it is raining for 11.8 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 139.8 rainfall days, and 24.88" (632mm) of precipitation is accumulated.Snowfall
In Potosi, snow does not fall in May through September.Daylight
In Potosi, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:28 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:45 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Potosi is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Prioritize safety - Recommendations to avert sunburn are shared. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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 Potosi in September?
How many hours of daylight does Potosi have in September?
When 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
Potosi, WI
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 53.2°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 (12°F).
Average pressure in September
Potosi, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Potosi, WI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Potosi, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Potosi, WI
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (1.02").
Average rainfall days in September
Potosi, WI
- Average rainfall days in September: 11.8 days
The months with the highest number of rainy days are May and June (18.3 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Potosi, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Potosi, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Potosi, 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: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Potosi, WI
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in September
Potosi, 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
Potosi, WI
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Potosi, 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).
Potosi, Wisconsin, USA
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