September weather forecastDeckerville, MI
September
Weather in September
September, the first month of the autumn in Deckerville, is also an agreeable month, with an average temperature fluctuating between 54.9°F (12.7°C) and 68.9°F (20.5°C).Temperature
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a warm 75.4°F (24.1°C) to an agreeable 68.9°F (20.5°C). An average nighttime temperature of 54.9°F (12.7°C) is witnessed throughout September.Humidity
The average relative humidity in September is 80%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 146.5 rainfall days, and 22.44" (570mm) of precipitation is accumulated.Snowfall
In Deckerville, snow does not fall in June through September.Daylight
In Deckerville, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:55 am and sunset at 8:05 pm. On the last day of September, in Deckerville, sunrise is at 7:28 am and sunset at 7:13 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 reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Take precautions - Protection against sun damage is advised. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Deckerville, MI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Deckerville, 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
Deckerville, MI
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Deckerville, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in September
Deckerville, MI
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is May (2.48").
The driest months (with the least rainfall) are February and December (1.26").
Average rainfall days in September
Deckerville, MI
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is October (16.9 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in September
Deckerville, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Deckerville, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Deckerville, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- 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 42min).
Average sunshine days in September
Deckerville, MI
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in September
Deckerville, 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
Deckerville, MI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Deckerville, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
