September weather forecastRoseville, MN
September
Weather in September
September signals the arrival of fall in Roseville, with average temperatures beginning to descend once more. The typical low weather temperatures of this month record an average of 53.2°F (11.8°C). The decrease in rainfall and daylight hours highlights the transition from summer. The trees begin donning their autumn hues while the UV index reduces, indicating shorter days. Light winds rustling through the falling leaves set the mood for the upcoming cooler months.Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's warm 78.8°F (26°C) to an agreeable 71.2°F (21.8°C). September witnesses an average low-temperature hovering around a fresh 53.2°F (11.8°C).Humidity
In Roseville, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 11.1 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 116.5 rainfall days, and 21.81" (554mm) 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 6:35 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:54 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Roseville, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Roseville, MN
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (19.9°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Roseville, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Roseville, MN
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Roseville, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Roseville, MN
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Roseville, MN
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
Roseville, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Roseville, 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
Roseville, MN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 36min
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 0min).
Average sunshine days in September
Roseville, MN
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Roseville, 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
Roseville, MN
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Roseville, 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).
