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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a warm 78.4°F (25.8°C) in August to a pleasant 72.5°F (22.5°C). During the month of September, an average temperature of 53.2°F (11.8°C) is noted during the nights.Humidity
The average relative humidity in September is 73%.Rainfall
In Mountain Lake, during September, the rain falls for 10.7 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 107.8 rainfall days, and 15.87" (403mm) of precipitation is accumulated.Snowfall
In Mountain Lake, snow does not fall in June through September.Daylight
In Mountain Lake, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:01 pm CDT.
Sunshine
The average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Experience reduced UV exposure by about half when donning a wide-brim hat.
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?
When it does not snow?
Does it snow in Mountain Lake in September?
How many hours of daylight does Mountain Lake have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Mountain Lake have in September?
How high is the UV index in September in Mountain Lake?
Average temperature in September
Mountain Lake, MN
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (21°F).
- Average low temperature in September: 53.2°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 (8.1°F).
Average pressure in September
Mountain Lake, 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
Mountain Lake, MN
- Average wind speed in September: 9mph
The windiest months (with the highest average wind speed) are January and February (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in September
Mountain Lake, MN
- Average humidity in September: 73%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Mountain Lake, MN
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is June (2.52").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Mountain Lake, MN
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in September
Mountain Lake, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mountain Lake, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mountain Lake, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Mountain Lake, MN
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Mountain Lake, 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 and November (UV index 1).
Average cloud cover in September
Mountain Lake, MN
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in September
Mountain Lake, 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).
Mountain Lake, Minnesota, USA
Weather forecast for your location
2. Allow the app to use your location