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
The onset of September is marked by a minor decrease in temperature, transitioning from a moderately hot 76.5°F (24.7°C) in August to an agreeable 70.3°F (21.3°C). The average temperature drops to a fresh 53.4°F (11.9°C) during the night in the month of September.Humidity
In Unionville, the average relative humidity in September is 80%.Rainfall
In Unionville, during September, the rain falls for 11.4 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Unionville, during the entire year, the rain falls for 139.6 days and collects up to 21.3" (541mm) of precipitation.Snowfall
In Unionville, Michigan, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September in Unionville, sunrise is at 6:58 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:16 pm EDT.
Sunshine
The average sunshine in September in Unionville is 7.8h.UV index
In Unionville, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What are September temperatures in Unionville?
What is the average humidity in September in Unionville?
How much does it rain in Unionville in September?
When it does not snow in Unionville?
Does it snow in Unionville in September?
What is the average length of the day in September in Unionville?
What time are sunrise and sunset in September in Unionville?
How many hours of sunshine does Unionville have in September?
How high is the UV index in September in Unionville?
Average temperature in September
Unionville, MI
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in September
Unionville, 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
Unionville, MI
- Average wind speed in September: 7.6mph
The windiest months (with the highest average wind speed) are January, February and April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Unionville, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in September
Unionville, MI
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days in September
Unionville, MI
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is October (15.8 days).
The month with the least rainy days is February (5 days).
Average snowfall in September
Unionville, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Unionville, 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
Unionville, MI
- Average daylight in September: 12h and 3min
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: 7h and 5min
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 36min).
Average sunshine days in September
Unionville, MI
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is September (16.7 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in September
Unionville, 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
Unionville, MI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Unionville, 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).
Unionville, Michigan, USA
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