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 shift from August to September coincides with a small decrease in the average high-temperature, down to an agreeable 70.2°F (21.2°C) from a warm 77.9°F (25.5°C). An average low-temperature of 51.3°F (10.7°C) is recorded during the nights in September in Saint Stephen.Humidity
The average relative humidity in September in Saint Stephen is 74%.Rainfall
In Saint Stephen, during September, the rain falls for 10.5 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Saint Stephen, there are 107.2 rainfall days, and 15.75" (400mm) of precipitation is accumulated.Snowfall
In Saint Stephen, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:15 am and sunset at 6:58 pm CDT.
Sunshine
In Saint Stephen, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the UV index of 4 transforms into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What are September temperatures in Saint Stephen?
What is the average humidity in September in Saint Stephen?
How many days does it rain in September in Saint Stephen?
When it does not snow in Saint Stephen?
Does it snow in Saint Stephen in September?
What is the average length of the day in September in Saint Stephen?
When is the sunrise / sunset in September in Saint Stephen?
How many hours of sunshine does Saint Stephen have in September?
What is the UV index reading in September in Saint Stephen?
Average temperature in September
Saint Stephen, MN
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (18.5°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).
Average pressure in September
Saint Stephen, MN
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Saint Stephen, MN
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in September
Saint Stephen, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and May (70%).
Average rainfall in September
Saint Stephen, MN
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is June (2.72").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Saint Stephen, MN
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
Saint Stephen, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint Stephen, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint Stephen, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 4min
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 12min).
Average sunshine days in September
Saint Stephen, MN
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in September
Saint Stephen, 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
Saint Stephen, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Saint Stephen, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Saint Stephen, Minnesota, USA
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