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
The start of September involves a subtle temperature drop, shifting from a moderately hot 78.4°F (25.8°C) in August to an agreeable 72.7°F (22.6°C). September nights are marked by an average low-temperature of 53.6°F (12°C).Humidity
In September, the average relative humidity in Lewisville, Minnesota, is 74%.Rainfall
In Lewisville, during September, the rain falls for 9.4 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 98.2 rainfall days, and 12.91" (328mm) of precipitation is accumulated.Snowfall
In Lewisville, 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 6:42 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:59 pm CDT.
Sunshine
In Lewisville, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the temperature in September in Lewisville?
What is the average humidity in September in Lewisville?
How much does it rain in Lewisville in September?
When it does not snow in Lewisville?
Does it snow in Lewisville in September?
What is the average length of the day in September in Lewisville?
When is the sunrise / sunset in September in Lewisville?
How long on average sun shines in September in Lewisville?
What is the UV index reading in September in Lewisville?
Average temperature in September
Lewisville, MN
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (21.4°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in September
Lewisville, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Lewisville, MN
- Average wind speed in September: 8.6mph
The windiest months (with the highest average wind speed) are February and April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in September
Lewisville, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are May and October (68%).
Average rainfall in September
Lewisville, MN
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is June (2.13").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Lewisville, MN
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is June (14.8 days).
The month with the least rainy days is February (1.4 days).
Average snowfall in September
Lewisville, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lewisville, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lewisville, MN
- 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Lewisville, MN
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.2 days).
Average UV index in September
Lewisville, MN
- 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 February, November and December (UV index 1).
Average cloud cover in September
Lewisville, MN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in September
Lewisville, MN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Lewisville, Minnesota, USA
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