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 average high-temperature slightly decreases in September, shifting from a moderately hot 74.3°F (23.5°C) in August to an agreeable 68.7°F (20.4°C). Throughout September, Rothbury witnesses a nighttime temperature average of 57.2°F (14°C).Humidity
The average relative humidity in September is 77%.Rainfall
In Rothbury, during September, the rain falls for 12.4 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Rothbury, during the entire year, the rain falls for 142 days and collects up to 25.98" (660mm) of precipitation.Snowfall
In Rothbury, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 7:10 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:27 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September in Rothbury?
When it does not snow?
Does it snow in September?
How many hours of daylight does Rothbury have in September?
What time are sunrise and sunset in September in Rothbury?
How many hours of sunshine does Rothbury have in September?
What is the UV index intensity in September?
Average temperature in September
Rothbury, MI
- Average high temperature in September: 68.7°F
The warmest month (with the highest average high temperature) is August (74.3°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Rothbury, 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 (29.92"Hg).
Average wind speed in September
Rothbury, MI
- Average wind speed in September: 10mph
The windiest month (with the highest average wind speed) is November (12.6mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in September
Rothbury, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Rothbury, MI
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is October (3.58").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in September
Rothbury, MI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is October (17.8 days).
The month with the least rainy days is February (5 days).
Average snowfall in September
Rothbury, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.51").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rothbury, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rothbury, 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: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in September
Rothbury, MI
- Average sunshine days in September: 14.8 days
The months with the most sunshine days are August and September (14.8 days).
The month with the least sunshine days is January (7.5 days).
Average UV index in September
Rothbury, MI
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Rothbury, MI
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Rothbury, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Rothbury, Michigan, USA
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