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
Saint Clair's weather subtly changes with the onset of September, barely falling from a warm 78.4°F (25.8°C) in August to an agreeable 72.7°F (22.6°C). In the month of September, Saint Clair witnesses a consistent average low-temperature of 53.4°F (11.9°C).Humidity
In Saint Clair, the average relative humidity in September is 75%.Rainfall
In Saint Clair, in September, it is raining for 9.2 days, with typically 1.34" (34mm) of accumulated precipitation. In Saint Clair, during the entire year, the rain falls for 97.8 days and collects up to 14.21" (361mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in Saint Clair is 12h and 30min.On the first day of September, sunrise is at 6:39 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:57 pm CDT.
Sunshine
In Saint Clair, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September in Saint Clair is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during September translates into the following guidance:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What are the temperatures in Saint Clair in September?
What is the average humidity in September in Saint Clair?
How much does it rain in Saint Clair in September?
When it does not snow in Saint Clair?
Does it snow in Saint Clair in September?
What is the average length of the day in September in Saint Clair?
What time are sunrise and sunset in September in Saint Clair?
How long on average sun shines in September in Saint Clair?
What is the UV index intensity in September in Saint Clair?
Average temperature in September
Saint Clair, MN
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in September
Saint Clair, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Saint Clair, MN
- Average wind speed in September: 8.4mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in September
Saint Clair, MN
- Average humidity in September: 75%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Saint Clair, MN
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is June (2.48").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Saint Clair, MN
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is June (14.7 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in September
Saint Clair, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Saint Clair, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint Clair, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Saint Clair, MN
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (13.6 days).
Average UV index in September
Saint Clair, 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
Saint Clair, MN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Saint Clair, 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).
Saint Clair, Minnesota, USA
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