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
September
Weather in September
Temperature
September's onset introduces a mild reduction in the average high-temperature, from a moderately hot 24.3°C in August to an agreeable 21.3°C. In Douglas, September nights witness a steady temperature drop to a refreshing 14.6°C.Humidity
The average relative humidity in September in Douglas is 77%.Rainfall
In September, the rain falls for 14.3 days. Throughout September, 58mm of precipitation is accumulated. Throughout the year, there are 151.7 rainfall days, and 665mm of precipitation is accumulated.Snowfall
June through October are months without snowfall in Douglas.Daylight
In Douglas, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 7:10 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:27 pm EDT.
Sunshine
In September, the average sunshine in Douglas is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. 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
What are the temperatures in Douglas in September?
What is the average humidity in September in Douglas?
How much does it rain in Douglas in September?
When it does not snow in Douglas?
What is the average length of the day in September in Douglas?
What time are sunrise and sunset in September in Douglas?
How long on average sun shines in September in Douglas?
How high is the UV index in September in Douglas?
Average temperature in September
Douglas, MI
- Average high temperature in September: 21.3°C
The warmest months (with the highest average high temperature) are July and August (24.3°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in September: 14.6°C
The months with the highest average low temperature are July and August (18.1°C).
The coldest month (with the lowest average low temperature) is January (-5.6°C).
Average pressure in September
Douglas, MI
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is March (1018.8mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Douglas, MI
- Average wind speed in September: 15.4km/h
The windiest month (with the highest average wind speed) is January (20.6km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in September
Douglas, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in September
Douglas, MI
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is October (81mm).
The driest month (with the least rainfall) is February (37mm).
Average rainfall days in September
Douglas, MI
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is October (17 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Douglas, MI
- Average snowfall in September: 0mm
The month with the highest snowfall is February (103mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Douglas, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Douglas, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Douglas, MI
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is March (14.7 days).
The month with the least sunshine days is January (7.2 days).
Average UV index in September
Douglas, MI
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Douglas, MI
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 25).
Average visibility in September
Douglas, MI
- Average visibility in September: 10km
The months with the highest visibility are July, August, September and October (10km).
The months with the lowest visibility are January and February (8km).