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
As September takes its course, Sainte Marie's average high-temperature registers at a still warm 77.9°F (25.5°C), closely aligning with the preceding month. Throughout September, the temperature tends to fall to a consistent average low of 59.4°F (15.2°C).Humidity
In Sainte Marie, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Sainte Marie. Rain falls for 13 days and accumulates 1.89" (48mm) of precipitation.Snowfall
In Sainte Marie, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:21 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:35 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 5 in September transforms into this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Sainte Marie in September?
What is the average humidity in September in Sainte Marie?
What is the driest month in Sainte Marie?
How much does it rain in Sainte Marie in September?
When it does not snow in Sainte Marie?
What is the average length of the day in September in Sainte Marie?
What time are sunrise and sunset in September in Sainte Marie?
How many hours of sunshine does Sainte Marie have in September?
What is the UV index reading in September in Sainte Marie?
Average temperature in September
Sainte Marie, IL
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Sainte Marie, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Sainte Marie, IL
- Average wind speed in September: 6.8mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Sainte Marie, IL
- Average humidity in September: 75%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Sainte Marie, IL
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is April (5.04").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Sainte Marie, IL
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.7 days).
The months with the least rainy days are January and February (9.3 days).
Average snowfall in September
Sainte Marie, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Sainte Marie, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sainte Marie, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Sainte Marie, IL
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in September
Sainte Marie, IL
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Sainte Marie, IL
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Sainte Marie, IL
- 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).
Sainte Marie, Illinois, USA
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