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
September witnesses a gentle descent in average high-temperature, descending from August's moderately hot 78.4°F (25.8°C) to an agreeable 71.6°F (22°C). An average nighttime temperature of 52.2°F (11.2°C) is recorded in Stewart during September.Humidity
The average relative humidity in September is 74%.Rainfall
In Stewart, in September, it is raining for 11.5 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 117.9 rainfall days, and 20.91" (531mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:15 am and sunset at 6:59 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Stewart, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during September leads to these advisories:
Adopt protective measures - Suggestions to resist sunburn are offered. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September in Stewart?
How many days does it rain in September?
When it does not snow?
Does it snow in Stewart in September?
What is the average length of the day in September in Stewart?
What time are sunrise and sunset in September?
How many hours of sunshine does Stewart have in September?
What is the UV index intensity in September?
Average temperature in September
Stewart, MN
- Average high temperature in September: 71.6°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: 52.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in September
Stewart, MN
- Average pressure in September: 29.99"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Stewart, MN
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Stewart, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Stewart, MN
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Stewart, MN
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (17.5 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in September
Stewart, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stewart, MN
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stewart, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Stewart, MN
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Stewart, 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, November and December (UV index 1).
Average cloud cover in September
Stewart, MN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Stewart, MN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Stewart, Minnesota, USA
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