September weather forecastRonneby, MN
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Ronneby, Minnesota, with temperature in the range of an average high of 69.8°F (21°C) and an average low of 51.1°F (10.6°C).Temperature
As August transitions into September, Ronneby sees a gentle drop in the average high-temperature, transitioning from a moderately hot 77.5°F (25.3°C) to a pleasant 69.8°F (21°C). Throughout the month of September, Ronneby witnesses an average low-temperature of 51.1°F (10.6°C).Humidity
In Ronneby, the average relative humidity in September is 75%.Rainfall
In Ronneby, in September, it is raining for 11.1 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, in Ronneby, there are 120.8 rainfall days, and 20.2" (513mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Ronneby is 12h and 31min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:52 pm. On the last day of September, in Ronneby, sunrise is at 7:13 am and sunset at 6:56 pm CDT.
Sunshine
In September, the average sunshine in Ronneby, Minnesota, is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ronneby, MN
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (18.3°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).
Average pressure in September
Ronneby, 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
Ronneby, MN
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Ronneby, MN
- Average humidity in September: 75%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (71%).
Average rainfall in September
Ronneby, MN
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is June (3.31").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Ronneby, MN
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Ronneby, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Ronneby, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ronneby, 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Ronneby, MN
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Ronneby, 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
Ronneby, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Ronneby, 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 and February (4mi).
