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
With the onset of September, Macomb experiences a modest temperature adjustment, with the average high-temperature gently receding from a hot 86.5°F (30.3°C) in August to a moderately hot 80.1°F (26.7°C). Macomb's temperature tends to fall to an average low of 59.7°F (15.4°C) during the nights of September.Humidity
The months with the lowest humidity are August through October, with an average relative humidity of 74%.Rainfall
In Macomb, in September, during 8.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 109.6 rainfall days, and 11.93" (303mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:41 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What are the least humid months in Macomb?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Macomb have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Macomb, MO
- Average high temperature in September: 80.1°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in September
Macomb, MO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Macomb, MO
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in September
Macomb, MO
- Average humidity in September: 74%
The months with the highest relative humidity are March and May (79%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in September
Macomb, MO
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Macomb, MO
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Macomb, MO
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Macomb, MO
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Macomb, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in September
Macomb, MO
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (14.1 days).
Average UV index in September
Macomb, MO
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Macomb, MO
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 30).
Average visibility in September
Macomb, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
Macomb, Missouri, USA
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