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
Lake Mills experiences a subtle adjustment in high-temperatures to an agreeable 71.6°F (22°C) with the onset of September, maintaining near parity with August's 76.6°F (24.8°C). During September, Lake Mills records a consistent average nighttime temperature of 53.1°F (11.7°C).Humidity
In September, the average relative humidity in Lake Mills, Iowa, is 78%.Rainfall
In Lake Mills, in September, it is raining for 12.5 days, with typically 2.56" (65mm) of accumulated precipitation. In Lake Mills, during the entire year, the rain falls for 138.3 days and collects up to 28.15" (715mm) of precipitation.Snowfall
In Lake Mills, snow does not fall in June through September.Daylight
In September, the average length of the day in Lake Mills, Iowa, is 12h and 29min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:56 pm CDT.
Sunshine
In Lake Mills, the average sunshine in September is 8.7h.UV index
In Lake Mills, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the average September temperature in Lake Mills?
What is the average humidity in September in Lake Mills?
How much does it rain in Lake Mills in September?
When it does not snow in Lake Mills?
Does it snow in Lake Mills in September?
What is the average length of the day in September in Lake Mills?
When is the sunrise / sunset in September in Lake Mills?
How long on average sun shines in September in Lake Mills?
How high is the UV index in September in Lake Mills?
Average temperature in September
Lake Mills, IA
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (21.7°F).
- Average low temperature in September: 53.1°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 (9.3°F).
Average pressure in September
Lake Mills, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Lake Mills, IA
- Average wind speed in September: 8.7mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in September
Lake Mills, IA
- Average humidity in September: 78%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Lake Mills, IA
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is June (4.41").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Lake Mills, IA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Lake Mills, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lake Mills, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lake Mills, IA
- Average daylight in September: 12h and 3min
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 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
Lake Mills, IA
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in September
Lake Mills, IA
- Average UV index in September: 4
The months with the highest UV index are June and 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
Lake Mills, IA
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Lake Mills, IA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
Lake Mills, Iowa, USA
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