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 indicates a minor shift in the average high-temperature, from August's moderately hot 77°F (25°C) to a pleasant 70.5°F (21.4°C). Twin Lake's average low-temperature in September is measured at a refreshing 55.4°F (13°C).Humidity
In Twin Lake, the average relative humidity in September is 77%.Rainfall
The months with the least rainfall are February, September and December Rain falls for 8.5 days and accumulates 0.63" (16mm) of rain.Snowfall
In Twin Lake, snow does not fall in May through October.Daylight
The average length of the day in September in Twin Lake is 12h and 29min.On the first day of September, sunrise is at 7:09 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:26 pm EDT.
Sunshine
In Twin Lake, the average sunshine in September is 8.2h.UV index
In Twin Lake, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Be vigilant - Suggestions to stave off sun damage are provided. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September in Twin Lake?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September in Twin Lake?
Average temperature in September
Twin Lake, MI
- Average high temperature in September: 70.5°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in September
Twin Lake, 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
Twin Lake, MI
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is November (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Twin Lake, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Twin Lake, MI
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is April (1.22").
The driest months (with the least rainfall) are February, September and December (0.63").
Average rainfall days in September
Twin Lake, MI
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Twin Lake, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Twin Lake, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Twin Lake, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Twin Lake, MI
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is February (14.4 days).
Average UV index in September
Twin Lake, MI
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Twin Lake, MI
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Twin Lake, 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).
Twin Lake, Michigan, USA
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