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
Weather in September
Temperature
In Detroit, the average high-temperature in September gently drops from a warm 76.8°F (24.9°C) in August to an agreeable 68.9°F (20.5°C). A noteworthy thermal contrast characterizes Detroit's September nights, with temperatures averaging at a chilly 44.8°F (7.1°C).Humidity
In September, the average relative humidity in Detroit is 71%.Rainfall
In Detroit, in September, during 10.7 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Detroit, during the entire year, the rain falls for 182.5 days and collects up to 47.56" (1208mm) of precipitation.Snowfall
In Detroit, snow does not fall in June through October.Daylight
The average length of the day in September in Detroit is 12h and 30min.On the first day of September, sunrise is at 6:32 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:50 pm PDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
In September, the average daily maximum UV index in Detroit is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What are the temperatures in Detroit in September?
What is the average humidity in September in Detroit?
How much does it rain in Detroit in September?
When it does not snow in Detroit?
How many hours of daylight does Detroit have in September?
What time are sunrise and sunset in September in Detroit?
How long on average sun shines in September in Detroit?
How high is the UV index in September in Detroit?
Average temperature in September
Detroit, OR
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is August (76.8°F).
The month with the lowest average high temperature is December (39.9°F).
- Average low temperature in September: 44.8°F
The month with the highest average low temperature is August (46.8°F).
The coldest month (with the lowest average low temperature) is December (28.8°F).
Average pressure in September
Detroit, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in September
Detroit, OR
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Detroit, OR
- Average humidity in September: 71%
The months with the highest relative humidity are February and March (88%).
The months with the lowest relative humidity are July and August (66%).
Average rainfall in September
Detroit, OR
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is January (6.97").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in September
Detroit, OR
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is March (21.3 days).
The month with the least rainy days is August (6.2 days).
Average snowfall in September
Detroit, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (15").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Detroit, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Detroit, OR
- Average daylight in September: 12h and 3min
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: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in September
Detroit, OR
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in September
Detroit, OR
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Detroit, OR
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Detroit, OR
- Average visibility in September: 5mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Detroit, Oregon, USA
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