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
September's arrival subtly correlates with a reduction in the average high-temperature, down from a warm 76.3°F (24.6°C) in August to a pleasant 69.4°F (20.8°C). During September nights, Granton records an average temperature of 50.2°F (10.1°C).Humidity
The average relative humidity in September is 80%.Rainfall
In Granton, in September, it is raining for 10.6 days, with typically 1.22" (31mm) of accumulated precipitation. In Granton, during the entire year, the rain falls for 117.6 days and collects up to 15.75" (400mm) of precipitation.Snowfall
In Granton, snow does not fall in June through September.Daylight
The average length of the day in September in Granton is 12h and 30min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:37 pm. On the last day of September, in Granton, sunrise is at 6:59 am and sunset at 6:43 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: An average UV index of 3 in September transforms into this advice:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Granton?
What is the average humidity in September in Granton?
How much does it rain in Granton in September?
When it does not snow in Granton?
Does it snow in Granton in September?
How many hours of daylight does Granton have in September?
What time are sunrise and sunset in September in Granton?
How many hours of sunshine does Granton have in September?
What is the UV index intensity in September in Granton?
Average temperature in September
Granton, WI
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (6.8°F).
Average pressure in September
Granton, WI
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Granton, WI
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Granton, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Granton, WI
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is June (2.13").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Granton, WI
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in September
Granton, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Granton, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Granton, 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 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Granton, WI
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Granton, WI
- Average UV index in September: 3
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, February, November and December (UV index 1).
Average cloud cover in September
Granton, WI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Granton, WI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August and December (5mi).
Granton, Wisconsin, USA
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