September weather forecastWinthrop, MN
September
Weather in September
September, the first month of the autumn in Winthrop, is also an agreeable month, with an average temperature fluctuating between 72.1°F (22.3°C) and 52.7°F (11.5°C).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a warm 78.6°F (25.9°C) in August to a pleasant 72.1°F (22.3°C). An average low-temperature of 52.7°F (11.5°C) is common during the nights of September.Humidity
The average relative humidity in September is 74%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. In Winthrop, during the entire year, the rain falls for 119.3 days and collects up to 22.4" (569mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Winthrop, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:41 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:59 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Winthrop, MN
- Average high temperature in September: 72.1°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 (20.1°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in September
Winthrop, 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 (29.87"Hg).
Average wind speed in September
Winthrop, MN
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Winthrop, 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, May and October (70%).
Average rainfall in September
Winthrop, MN
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Winthrop, MN
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (1.6 days).
Average snowfall in September
Winthrop, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Winthrop, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Winthrop, MN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Winthrop, MN
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Winthrop, 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
Winthrop, MN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Winthrop, 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).
