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
In the transition to September, International Falls observes a drop in the average high-temperature, moving from a moderately hot 76.1°F (24.5°C) in August to an enjoyable 65.8°F (18.8°C). During the nights in September, International Falls observes an average low-temperature of 47.3°F (8.5°C).Humidity
In International Falls, the average relative humidity in September is 75%.Rainfall
In International Falls, during September, the rain falls for 11.6 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, in International Falls, there are 110.5 rainfall days, and 19.29" (490mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In International Falls, Minnesota, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:54 pm. On the last day of September, in International Falls, sunrise is at 7:12 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September is 8h.UV index
The average daily maximum UV index in September in International Falls is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Guard yourself - Avoiding sunburn is suggested. When the Sun is at its strongest around midday, find shade and limit exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the average September temperature in International Falls?
What is the average humidity in September in International Falls?
How many days does it rain in September in International Falls?
When it does not snow in International Falls?
Does it snow in International Falls in September?
How many hours of daylight does International Falls have in September?
When are sunrise and sunset in September in International Falls?
How many hours of sunshine does International Falls have in September?
What is the UV index intensity in September in International Falls?
Average temperature in September
International Falls, MN
- Average high temperature in September: 65.8°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (13.8°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (-0.6°F).
Average pressure in September
International Falls, MN
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
International Falls, MN
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is October (7.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
International Falls, MN
- Average humidity in September: 75%
The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
International Falls, MN
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in September
International Falls, MN
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in September
International Falls, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
International Falls, MN
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (23.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
International Falls, MN
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 30min).
Average sunshine days in September
International Falls, MN
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in September
International Falls, 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, March, October, November and December (UV index 1).
Average cloud cover in September
International Falls, MN
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 85).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
International Falls, MN
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July and August (6mi).
The months with the lowest visibility are January and February (3mi).
International Falls, Minnesota, USA
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