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
With the onset of September, the average high-temperature subtly recedes from August's agreeable 71.8°F (22.1°C) to an enjoyable 65.1°F (18.4°C). Curtis, during the month of September, experiences an average low-temperature of 51.6°F (10.9°C).Humidity
In Curtis, the average relative humidity in September is 80%.Rainfall
In September, in Curtis, the rain falls for 12.7 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 123.2 rainfall days, and 22.17" (563mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 7:04 am and sunset at 8:21 pm. On the last day of September, sunrise is at 7:41 am and sunset at 7:24 pm EDT.
Sunshine
In Curtis, the average sunshine in September is 7.5h.UV index
The average daily maximum UV index in September in Curtis is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Curtis in September?
What is the average humidity in September in Curtis?
How much does it rain in Curtis in September?
When it does not snow in Curtis?
Does it snow in Curtis in September?
How many hours of daylight does Curtis have in September?
When is the sunrise / sunset in September in Curtis?
How many hours of sunshine does Curtis have in September?
How high is the UV index in September in Curtis?
Average temperature in September
Curtis, MI
- Average high temperature in September: 65.1°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is February (13.6°F).
Average pressure in September
Curtis, MI
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Curtis, MI
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is November (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Curtis, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Curtis, MI
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is March (1.5").
Average rainfall days in September
Curtis, MI
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is October (15.3 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Curtis, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Curtis, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Curtis, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in September
Curtis, MI
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is June (16.3 days).
The month with the least sunshine days is January (5.8 days).
Average UV index in September
Curtis, MI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Curtis, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Curtis, MI
- 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).
Curtis, Michigan, USA
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