Temperatures in September
It's warm in September in Valley Stream with an average temperature of 25°C. Temperatures this month range from a low of 20°C to a high of 29°C. At night, you can expect temperatures between 15°C and 21°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Valley Stream in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Valley Stream with hot temperatures, averaging around 27°C during the day and nights close to 20°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-September
By mid-September, the average daytime temperature drops to around 26°C, with nights close to 18°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Valley Stream will be around 24°C, with nights close to 17°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Precipitation in September
In September, there is an average of 110 mm of precipitation, spread over 7 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 24% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Valley Stream. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Valley Stream in September |
London | ||
|---|---|---|---|
 Average Temperature |
25°C | 20°C | |
 High Temp |
29°C | 22°C | |
| Low Temp |
20°C | 17°C | |
 Total Precipitation |
110 mm | 44 mm | |
| Rainy Days |
7 days | 8 days | |
August
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is September a good time to visit Valley Stream?
After some sun? Then September isn’t the best time to be in Valley Stream. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Valley Stream in September
With 34°C, Valley Stream hit the highest temperature in the last 10 years in September 2018. The lowest daytime temperature in this month was 15°C in 2023. The extreme night temperatures ranged from a low of 8°C to a high of 26°C.
Check out the climate of Valley Stream for all months and discover the best travel time
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Daily Temperature in September in Valley Stream
This chart shows the average daily temperatures, both day and night, for each day in September in Valley Stream, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Valley Stream
The chart below shows the average daily precipitation in September for Valley Stream, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 7 days of rain in Valley Stream.
Daily UV Index in September in Valley Stream
This chart shows the average daily UV index in September in Valley Stream, 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 Valley Stream Over the Years
This chart shows the average temperature in September in Valley Stream, measured in degrees Celsius, over the past years.
Total Precipitation in September in Valley Stream Over the Years
This chart shows the average precipitation in September in Valley Stream, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Valley Stream
Click on a specific day in September for detailed info on the typical weather on that day in Valley Stream. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Valley Stream
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Average Weather in Valley Stream by Month
Click on a month below to see detailed weather info for Valley Stream. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Valley Stream for all months at once
