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 commencement of September, Iron River records a moderate temperature decline, with the average high easing from August's moderately hot 74.5°F (23.6°C) to an enjoyable 66.6°F (19.2°C). An average nighttime temperature of 47.8°F (8.8°C) is noted in Iron River during the month of September.Humidity
The average relative humidity in September is 80%.Rainfall
In Iron River, in September, it is raining for 12.5 days, with typically 1.69" (43mm) of accumulated precipitation. In Iron River, during the entire year, the rain falls for 120.5 days and collects up to 19.17" (487mm) of precipitation.Snowfall
June through September are months without snowfall in Iron River, Michigan.Daylight
In September, the average length of the day in Iron River is 12h and 32min.On the first day of September in Iron River, Michigan, sunrise is at 6:16 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:35 pm CDT.
Sunshine
In Iron River, the average sunshine in September is 7.7h.UV index
In September, the average daily maximum UV index in Iron River is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Exercise prevention - Warding off sunburn is urged. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Iron River?
What is the average humidity in September in Iron River?
How much does it rain in Iron River in September?
When it does not snow in Iron River?
Does it snow in Iron River in September?
How many hours of daylight does Iron River have in September?
When is the sunrise / sunset in September in Iron River?
How long on average sun shines in September in Iron River?
What is the UV index intensity in September in Iron River?
Average temperature in September
Iron River, MI
- Average high temperature in September: 66.6°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 47.8°F
The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in September
Iron River, MI
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Iron River, MI
- Average wind speed in September: 7.4mph
The windiest months (with the highest average wind speed) are January and November (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in September
Iron River, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Iron River, MI
- Average rainfall in September: 1.69"
The wettest months (with the highest rainfall) are May and June (2.24").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Iron River, MI
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Iron River, MI
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.32").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Iron River, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Iron River, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).
Average sunshine days in September
Iron River, MI
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The months with the least sunshine days are January and February (7.8 days).
Average UV index in September
Iron River, 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, November and December (UV index 1).
Average cloud cover in September
Iron River, MI
- Average cloud cover in September: 45
The months with the most cloud cover are January and February (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Iron River, MI
- Average visibility in September: 5mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January and February (4mi).
Iron River, Michigan, USA
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