September weather forecastRichwood, MN
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Richwood, Minnesota, with an average temperature ranging between min 50°F (10°C) and max 68.9°F (20.5°C).Temperature
Richwood's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's moderately hot 77.5°F (25.3°C) to an agreeable 68.9°F (20.5°C). In the month of September, the temperature generally rests at an average low of 50°F (10°C).Humidity
In Richwood, the average relative humidity in September is 70%.Rainfall
In September, in Richwood, the rain falls for 9.7 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. Throughout the year, in Richwood, there are 109.9 rainfall days, and 19.72" (501mm) of precipitation is accumulated.Snowfall
In Richwood, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:43 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:04 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Richwood, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Richwood, MN
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (15.6°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (1.9°F).
Average pressure in September
Richwood, MN
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Richwood, MN
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is October (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in September
Richwood, MN
- Average humidity in September: 70%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Richwood, MN
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in September
Richwood, MN
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.2 days).
Average snowfall in September
Richwood, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Richwood, MN
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (19.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Richwood, MN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Richwood, MN
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Richwood, 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
Richwood, MN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Richwood, 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).
