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
A moderate decline in the average high-temperature is seen during September, decreasing from a warm 80.6°F (27°C) in August to a pleasant 70.7°F (21.5°C). Throughout September, the nighttime temperature averages to a cool 51.6°F (10.9°C).Humidity
The average relative humidity in September is 62%.Rainfall
In September, in East Grand Forks, Minnesota, the rain falls for 7.7 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 80.3 rainfall days, and 10.47" (266mm) of precipitation is accumulated.Snowfall
In East Grand Forks, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:47 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:08 pm CDT.
Sunshine
In September, the average sunshine in East Grand Forks is 8.6h.UV index
The average daily maximum UV index in September 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, 4 in September, converts into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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 in East Grand Forks?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does East Grand Forks have in September?
What is the UV index reading in September?
Average temperature in September
East Grand Forks, MN
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is January (15.3°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).
Average pressure in September
East Grand Forks, MN
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
East Grand Forks, MN
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).
Average humidity in September
East Grand Forks, MN
- Average humidity in September: 62%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
East Grand Forks, MN
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
East Grand Forks, MN
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is June (14.1 days).
The month with the least rainy days is January (0.8 days).
Average snowfall in September
East Grand Forks, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
East Grand Forks, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
East Grand Forks, MN
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
East Grand Forks, MN
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in September
East Grand Forks, 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
East Grand Forks, MN
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
East Grand Forks, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
East Grand Forks, Minnesota, USA
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