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
September signifies a gentle decline in Rockford's average high-temperature, easing from a moderately hot 78.4°F (25.8°C) in August to a pleasant 72°F (22.2°C). During the September nights, an average temperature of 52.9°F (11.6°C) is observed.Humidity
In September, the average relative humidity in Rockford is 78%.Rainfall
The months with the least rainfall in Rockford, Michigan, are February and September Rain falls for 10.5 days and accumulates 1.1" (28mm) of rain.Snowfall
In Rockford, snow does not fall in May through September.Daylight
In September, the average length of the day in Rockford is 12h and 29min.On the first day of September, sunrise is at 7:07 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:24 pm EDT.
Sunshine
The average sunshine in September in Rockford is 8.2h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Take precautions - Protection against sun damage is advised. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What is the usual temperature for Rockford in September?
What is the average humidity in September in Rockford?
What is the driest month in Rockford?
How many days does it rain in September in Rockford?
When it does not snow in Rockford?
Does it snow in Rockford in September?
How many hours of daylight does Rockford have in September?
What time are sunrise and sunset in September in Rockford?
How many hours of sunshine does Rockford have in September?
How high is the UV index in September in Rockford?
Average temperature in September
Rockford, MI
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 52.9°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
Rockford, 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
Rockford, MI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Rockford, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Rockford, MI
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is October (2.24").
The driest months (with the least rainfall) are February and September (1.1").
Average rainfall days in September
Rockford, MI
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is October (15.9 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in September
Rockford, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.69").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rockford, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rockford, MI
- Average daylight in September: 12h and 3min
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: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Rockford, MI
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in September
Rockford, MI
- Average UV index in September: 4
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Rockford, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Rockford, 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 month with the lowest visibility is January (4mi).
Rockford, Michigan, USA
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