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
During September, Clear Lake records an average high-temperature of an agreeable 72.5°F (22.5°C), marking a slight divergence from August's 77.7°F (25.4°C). During the nights in September, Clear Lake experiences a consistent average temperature of 54.3°F (12.4°C).Humidity
The average relative humidity in September is 80%.Rainfall
September, November and December are months with the least rain when the rain falls for 14.1 days and typically aggregates up to 1.85" (47mm) of rain.Snowfall
In Clear Lake, snow does not fall in June through September.Daylight
In Clear Lake, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:12 pm. On the last day of September, in Clear Lake, sunrise is at 7:35 am and sunset at 7:22 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
In Clear Lake, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Clear Lake in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in Clear Lake in September?
How many hours of daylight does Clear Lake have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Clear Lake have in September?
What is the UV index reading in September?
Average temperature in September
Clear Lake, IN
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 54.3°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 (17.8°F).
Average pressure in September
Clear Lake, IN
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Clear Lake, IN
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Clear Lake, IN
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are March, April and October (77%).
Average rainfall in September
Clear Lake, IN
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is April (3.98").
The driest months (with the least rainfall) are September, November and December (1.85").
Average rainfall days in September
Clear Lake, IN
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in September
Clear Lake, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Clear Lake, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Clear Lake, IN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Clear Lake, IN
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (13.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in September
Clear Lake, IN
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Clear Lake, IN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Clear Lake, IN
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, October and November (6mi).
The months with the lowest visibility are January, February, August, September and December (5mi).
Clear Lake, Indiana, USA
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