September weather forecastByron, MI
September
Weather in September
September, the first month of the autumn in Byron, is still a pleasant month, with an average temperature fluctuating between 52.7°F (11.5°C) and 71.2°F (21.8°C).Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from a warm 77.5°F (25.3°C) in August to a pleasant 71.2°F (21.8°C). An average low-temperature of 52.7°F (11.5°C) is recorded in the month of September in Byron.Humidity
In September, the average relative humidity in Byron is 80%.Rainfall
September and November are months with the least rain in Byron when the rain falls for 12.6 days and typically aggregates up to 1.57" (40mm) of rain.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 7:01 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:18 pm EDT.
Sunshine
In September, the average sunshine is 7.8h.UV index
In September, the average daily maximum UV index in Byron is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the UV index of 3 transforms into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Byron, MI
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in September
Byron, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Byron, MI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Byron, MI
- Average humidity in September: 80%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Byron, MI
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is April (2.99").
The driest months (with the least rainfall) are September and November (1.57").
Average rainfall days in September
Byron, MI
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Byron, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Byron, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Byron, MI
- Average daylight in September: 12h and 30min
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: 7h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Byron, MI
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is January (8.5 days).
Average UV index in September
Byron, MI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Byron, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Byron, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, October and November (6mi).
The months with the lowest visibility are January, February, August, September and December (5mi).
