September weather forecastMacomb, MI
September
Weather in September
September in Macomb witnesses a significant seasonal transition from summer to fall. The absence of snowfall and a reduced average high temperature of 71.4F help bring forth the colorful spectacle of autumn. The gradually cooling temperature prompts the city’s foliage to shed their green hues, opting for the typical autumn palette of reds, browns, and yellows. Trees seem to set themselves alight in a fiery display of color, a visual treat for both locals and visitors. Steady rains enhance the vibrant shades of autumn, making the fall panorama even more spectacular.Temperature
The arrival of September is marked by a minor reduction in average high-temperature, sliding from a moderately hot 78.1°F (25.6°C) in August to a pleasant 71.4°F (21.9°C). Throughout September nights, Macomb registers an average low-temperature of 56.8°F (13.8°C).Humidity
The months with the lowest humidity in Macomb are April, May, July through October, with an average relative humidity of 76%.Rainfall
In Macomb, in September, it is raining for 13.3 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 146.8 rainfall days, and 22.72" (577mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Macomb, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:57 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Macomb, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Macomb, MI
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
Macomb, MI
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Macomb, MI
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Macomb, MI
- Average humidity in September: 76%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May, July, August, September and October (76%).
Average rainfall in September
Macomb, MI
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days in September
Macomb, MI
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Macomb, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Macomb, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Macomb, MI
- Average daylight in September: 12h and 30min
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 24min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Macomb, MI
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Macomb, MI
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Macomb, MI
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Macomb, MI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
