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 signals a slight drop in average high-temperature, sliding from August's moderately hot 74.7°F (23.7°C) to a refreshing 67.8°F (19.9°C). Throughout the month of September, Herron observes an average nighttime temperature of 53.6°F (12°C).Humidity
The average relative humidity in September in Herron is 77%.Rainfall
In Herron, during September, the rain falls for 11.3 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 118.1 rainfall days, and 16.42" (417mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Herron.Daylight
In September, the average length of the day in Herron is 12h and 31min.On the first day of September, sunrise is at 6:57 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:16 pm EDT.
Sunshine
In Herron, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Herron in September?
What is the average humidity in September in Herron?
How many days does it rain in September in Herron?
When it does not snow in Herron?
Does it snow in Herron in September?
How many hours of daylight does Herron have in September?
What time are sunrise and sunset in September in Herron?
How long on average sun shines in September in Herron?
What is the UV index intensity in September in Herron?
Average temperature in September
Herron, MI
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (59°F).
The coldest months (with the lowest average low temperature) are January and February (17.1°F).
Average pressure in September
Herron, MI
- Average pressure in September: 30.02"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
Herron, MI
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Herron, MI
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Herron, MI
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in September
Herron, MI
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Herron, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.63").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Herron, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Herron, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in September
Herron, MI
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is May (16.1 days).
The month with the least sunshine days is January (11.3 days).
Average UV index in September
Herron, MI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Herron, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Herron, 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).
Herron, Michigan, USA
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