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
Rock in September experiences a gentle temperature dip, with average high-temperatures reducing from a pleasant 72.5°F (22.5°C) in August to an enjoyable 66°F (18.9°C). Rock witnesses a consistent average low-temperature of 52.7°F (11.5°C) throughout September.Humidity
In Rock, the average relative humidity in September is 80%.Rainfall
In Rock, in September, during 12.9 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Rock, during the entire year, the rain falls for 139.7 days and collects up to 24.17" (614mm) of precipitation.Snowfall
In Rock, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:26 pm. On the last day of September, sunrise is at 7:46 am and sunset at 7:30 pm EDT.
Sunshine
The average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September in Rock is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 3 in September transforms into this advice:
Heed the precautions - It is counselled to guard against solar damage. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Rock?
What is the average humidity in September in Rock?
How many days does it rain in September in Rock?
When it does not snow in Rock?
Does it snow in Rock in September?
What is the average length of the day in September in Rock?
When is the sunrise / sunset in September in Rock?
How many hours of sunshine does Rock have in September?
What is the UV index intensity in September in Rock?
Average temperature in September
Rock, MI
- Average high temperature in September: 66°F
The warmest month (with the highest average high temperature) is July (72.7°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is August (57.9°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in September
Rock, 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
Rock, MI
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is November (11mph).
The calmest month (with the lowest average wind speed) is June (7.6mph).
Average humidity in September
Rock, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Rock, MI
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is October (2.91").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in September
Rock, MI
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Rock, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rock, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rock, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Rock, MI
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in September
Rock, MI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Rock, MI
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Rock, 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).
Rock, Michigan, USA
Weather forecast for your location
2. Allow the app to use your location