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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 77.7°F (25.4°C) in August to an agreeable 71.6°F (22°C). Throughout September, Webster witnesses a nighttime temperature average of 52.7°F (11.5°C).Humidity
The average relative humidity in September is 77%.Rainfall
In Webster, in September, during 11.5 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Webster, during the entire year, the rain falls for 118.9 days and collects up to 24.09" (612mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 30min.On the first day of September, sunrise is at 6:36 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:55 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Around midday, solar radiation is most harmful; hence, exposure should be limited. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September in Webster?
When it does not snow?
Does it snow in September?
How many hours of daylight does Webster have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Webster, MN
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in September
Webster, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Webster, MN
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Webster, MN
- Average humidity in September: 77%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (72%).
Average rainfall in September
Webster, MN
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Webster, MN
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (1.5 days).
Average snowfall in September
Webster, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Webster, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Webster, MN
- 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 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Webster, MN
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in September
Webster, 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 January, February, November and December (UV index 1).
Average cloud cover in September
Webster, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Webster, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Webster, Minnesota, USA
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