United StatesAverage weather for LaSalle in September
It's warm in September in LaSalle with an average temperature of 26°C. Temperatures this month range from a low of 22°C to a high of 30°C. At night, you can expect temperatures between 10°C and 18°C.
Start of September
The month of September starts in LaSalle with hot temps, averaging around 28°C during the day and nights around 17°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
With the temperature difference between day and night, it’s smart to wear layers.
Mid September
By mid-September, daytime temps drop to around 27°C, with nights around 15°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
Since it cools down at night, it’s a good idea to wear layers.
End of September
By the end of September, the average daytime temperature in LaSalle is around 25°C, while nighttime temps are about 13°C. A shower might pop up, but overall, the weather will be dry and sunny.
In September, there is an average of 134 mm of precipitation, spread over 6 days. The wind speed is around 4 Bft, mostly coming from the South.
LaSalle in September |
New York | ||
|---|---|---|---|
 Average temperature |
26°C | 27°C | |
 Max. temperature |
30°C | 31°C | |
| Min. temperature |
22°C | -5°C | |
 Total precipitation |
134 mm | 57 mm | |
| Rainy days |
6 days | 9 days | |
August
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit LaSalle?
Looking for sun? September isn’t a good month to be in LaSalle. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 38°C in 2016, LaSalle reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 12°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 24°C.
Check out the climate of LaSalle for all months and discover the best travel time
Daily Temperature in September in LaSalle
This chart shows the average daily high and low temperatures in September for LaSalle, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in LaSalle
The chart below shows the average daily precipitation in September for LaSalle, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 6 days of precipitation in LaSalle.
Daily UV index in September in LaSalle
This chart shows the average daily UV index in September in LaSalle, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in LaSalle over the years
This chart shows the average temperature in September in LaSalle, measured in degrees Celsius, over the past few years.
Total precipitation in September in LaSalle over the years
This chart shows the average precipitation in September in LaSalle, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for LaSalle
Click on any day in September to get detailed info about the usual weather on that day in LaSalle. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in LaSalle
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Average weather in LaSalle by month
Click on a month below to see detailed weather info for LaSalle. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
