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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 78.4°F (25.8°C) in August to a pleasant 70.9°F (21.6°C). During the month of September, the temperature in Mahtomedi generally drops to a low average of 52.9°F (11.6°C).Humidity
The average relative humidity in September in Mahtomedi is 75%.Rainfall
In September, the rain falls for 11.2 days. Throughout September, 1.85" (47mm) of precipitation is accumulated. Throughout the year, there are 117 rainfall days, and 21.57" (548mm) of precipitation is accumulated.Snowfall
In Mahtomedi, snow does not fall in June through September.Daylight
In Mahtomedi, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:34 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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 Mahtomedi?
When it does not snow?
Does it snow in September?
How many hours of daylight does Mahtomedi have in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Mahtomedi?
What is the UV index reading in September in Mahtomedi?
Average temperature in September
Mahtomedi, MN
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 52.9°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 (7.2°F).
Average pressure in September
Mahtomedi, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Mahtomedi, MN
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Mahtomedi, MN
- Average humidity in September: 75%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in September
Mahtomedi, MN
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Mahtomedi, MN
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is June (16.5 days).
The months with the least rainy days are January and February (2.2 days).
Average snowfall in September
Mahtomedi, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mahtomedi, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mahtomedi, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- 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 0min).
Average sunshine days in September
Mahtomedi, MN
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in September
Mahtomedi, MN
- Average UV index in September: 4
The month with the highest UV index is 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
Mahtomedi, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Mahtomedi, 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).
Mahtomedi, Minnesota, USA
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