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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a pleasant 72.9°F (22.7°C) in August to a comfortable 66°F (18.9°C). Alanson experiences an average low-temperature of 53.4°F (11.9°C) in the month of September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Alanson, in September, it is raining for 12.1 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 128.7 rainfall days, and 23.39" (594mm) of precipitation is accumulated.Snowfall
In Alanson, Michigan, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 7:01 am and sunset at 8:16 pm. On the last day of September, sunrise is at 7:37 am and sunset at 7:20 pm EDT.
Sunshine
The average sunshine in September in Alanson is 7.8h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Alanson in September?
What is the average humidity in September in Alanson?
How many days does it rain in September in Alanson?
When it does not snow in Alanson?
Does it snow in Alanson in September?
What is the average length of the day in September in Alanson?
When are sunrise and sunset in September in Alanson?
How long on average sun shines in September in Alanson?
How high is the UV index in September in Alanson?
Average temperature in September
Alanson, MI
- Average high temperature in September: 66°F
The warmest month (with the highest average high temperature) is August (72.9°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is February (16°F).
Average pressure in September
Alanson, 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
Alanson, MI
- Average wind speed in September: 8.4mph
The windiest months (with the highest average wind speed) are January and December (10.7mph).
The calmest months (with the lowest average wind speed) are June and July (7.3mph).
Average humidity in September
Alanson, MI
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Alanson, MI
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is October (2.95").
The driest months (with the least rainfall) are February and August (1.38").
Average rainfall days in September
Alanson, MI
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Alanson, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.19").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Alanson, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alanson, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in September
Alanson, MI
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is July (16.6 days).
The month with the least sunshine days is January (5.9 days).
Average UV index in September
Alanson, 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, March, November and December (UV index 1).
Average cloud cover in September
Alanson, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Alanson, MI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).