September weather forecastIronton, WI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Ironton, Wisconsin, with an average temperature varying between 71.2°F (21.8°C) and 51.1°F (10.6°C).Temperature
The onset of September results in a small decrease in the average high-temperature, moderately receding from a moderately hot 77.9°F (25.5°C) in August to an agreeable 71.2°F (21.8°C). During the September nights, an average temperature of 51.1°F (10.6°C) is observed.Humidity
In September, the average relative humidity in Ironton is 80%.Rainfall
In Ironton, in September, it is raining for 10.3 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, in Ironton, there are 117.9 rainfall days, and 21.02" (534mm) of precipitation is accumulated.Snowfall
In Ironton, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:25 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:42 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September in Ironton is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Take precautions - Protection against sun damage is advised. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ironton, WI
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in September: 51.1°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 (9.9°F).
Average pressure in September
Ironton, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Ironton, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Ironton, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Ironton, WI
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in September
Ironton, WI
- Average rainfall days in September: 10.3 days
The months with the highest number of rainy days are May and June (16.1 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in September
Ironton, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Ironton, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ironton, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Ironton, WI
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Ironton, 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, February, November and December (UV index 1).
Average cloud cover in September
Ironton, WI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July, August and September (Cloud cover 36).
Average visibility in September
Ironton, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
