September weather forecastAlvin, MI
September
Weather in September
September, the first month of the autumn in Alvin, is also an agreeable month, with temperature in the range of an average high of 68°F (20°C) and an average low of 55.4°F (13°C).Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's warm 74.5°F (23.6°C) to a pleasant 68°F (20°C). Throughout September nights, Alvin experiences a consistent temperature average of 55.4°F (13°C).Humidity
The average relative humidity in September is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.6 days and typically collects 1.18" (30mm) of precipitation.Snowfall
In Alvin, Michigan, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:57 am and sunset at 8:09 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:15 pm EDT.
Sunshine
The average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Alvin, MI
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
Alvin, MI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is March (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Alvin, MI
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Alvin, MI
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Alvin, MI
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in September
Alvin, MI
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Alvin, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Alvin, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alvin, MI
- 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 12min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 12min).
Average sunshine days in September
Alvin, MI
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is May (15.8 days).
The month with the least sunshine days is January (8.7 days).
Average UV index in September
Alvin, 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 and December (UV index 1).
Average cloud cover in September
Alvin, MI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Alvin, MI
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
