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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 77.2°F (25.1°C) to an agreeable 70.7°F (21.5°C). Throughout the month of September, Plum City sees a steady low-temperature average of 50.9°F (10.5°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Plum City, during September, the rain falls for 12.2 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, there are 137.3 rainfall days, and 26.18" (665mm) of precipitation is accumulated.Snowfall
In Plum City, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:50 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Be vigilant - Preventing sunburn is recommended. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September in Plum City?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Plum City have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Plum City, WI
- Average high temperature in September: 70.7°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 (19.8°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (6.6°F).
Average pressure in September
Plum City, WI
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Plum City, WI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in September
Plum City, WI
- Average humidity in September: 79%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in September
Plum City, WI
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (4.53").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Plum City, WI
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in September
Plum City, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Plum City, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Plum City, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 4min
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 12min).
Average sunshine days in September
Plum City, WI
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in September
Plum City, WI
- Average UV index in September: 4
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
Plum City, 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 34).
Average visibility in September
Plum City, 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).
Plum City, Wisconsin, USA
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