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 transition into September subtly indicates a reduction in the average high-temperature, down to a comfortable 62.4°F (16.9°C) from August's agreeable 70°F (21.1°C). Isabella observes an average low-temperature of 50.4°F (10.2°C) during September nights.Humidity
In September, the average relative humidity is 80%.Rainfall
In Isabella, during September, the rain falls for 12.8 days and regularly aggregates up to 2.09" (53mm) of precipitation. In Isabella, during the entire year, the rain falls for 130 days and collects up to 22.13" (562mm) of precipitation.Snowfall
In Isabella, Minnesota, snow does not fall in June through September.Daylight
The average length of the day in September in Isabella is 12h and 33min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:46 pm CDT.
Sunshine
In Isabella, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Isabella?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Isabella have in September?
What is the UV index reading in September?
Average temperature in September
Isabella, MN
- Average high temperature in September: 62.4°F
The warmest month (with the highest average high temperature) is August (70°F).
The month with the lowest average high temperature is January (18.1°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in September
Isabella, MN
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Isabella, MN
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Isabella, MN
- Average humidity in September: 80%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Isabella, MN
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in September
Isabella, MN
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Isabella, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Isabella, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Isabella, MN
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Isabella, MN
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is December (12 days).
Average UV index in September
Isabella, MN
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Isabella, MN
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Isabella, MN
- Average visibility in September: 6mi
The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and March (5mi).
Isabella, Minnesota, USA
Weather forecast for your location
2. Allow the app to use your location