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
With the beginning of September, the average high-temperature shows a small decrease, transitioning from a warm 78.4°F (25.8°C) in August to a pleasant 72.5°F (22.5°C). September is noted for a mean low-temperature of 52.7°F (11.5°C).Humidity
The average relative humidity in September in Henderson is 75%.Rainfall
In September, the rain falls for 12.1 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 122.2 rainfall days, and 22.8" (579mm) of precipitation is accumulated.Snowfall
In Henderson, Minnesota, snow does not fall in May through September.Daylight
In September, the average length of the day in Henderson is 12h and 30min.On the first day of September, sunrise is at 6:39 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:57 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 4 in September transforms into this advice:
Exercise prevention - Protecting skin and eyes from harm is required. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Henderson?
What is the average humidity in September in Henderson?
How much does it rain in Henderson in September?
When it does not snow in Henderson?
Does it snow in Henderson in September?
How many hours of daylight does Henderson have in September?
What time are sunrise and sunset in September in Henderson?
How many hours of sunshine does Henderson have in September?
What is the UV index intensity in September in Henderson?
Average temperature in September
Henderson, MN
- Average high temperature in September: 72.5°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 (21.2°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in September
Henderson, 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
Henderson, MN
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Henderson, MN
- Average humidity in September: 75%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and October (71%).
Average rainfall in September
Henderson, MN
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Henderson, MN
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is June (17.5 days).
The month with the least rainy days is January (1.9 days).
Average snowfall in September
Henderson, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Henderson, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Henderson, 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: 3h and 12min).
Average sunshine days in September
Henderson, MN
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Henderson, 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
Henderson, MN
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Henderson, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Henderson, Minnesota, USA
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