Weathermondo.com
United StatesThe weather in September in Jefferson Valley-Yorktown
It's warm in September in Jefferson Valley-Yorktown with an average temperature of 25°C. Temperatures this month range from a low of 19°C to a high of 29°C. At night, you can expect temperatures between 12°C and 18°C.
Looking for sun? September isn’t a good month to be in Jefferson Valley-Yorktown. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Jefferson Valley-Yorktown, New York. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2015, Jefferson Valley-Yorktown reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 14°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 23°C.
Rainfall amount
In September, there is an average of 110 mm of precipitation, spread over 14 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in September for Jefferson Valley-Yorktown
Click on any day in September to get detailed info about the usual weather on that day in Jefferson Valley-Yorktown. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Jefferson Valley-Yorktown | New York | |
|---|---|---|
| Average temperature | 25°C | 27°C |
| Max. temperature | 29°C | 31°C |
| Min. temperature | 12°C | -5°C |
| Total precipitation | 110 mm | 57 mm |
| Rainy days | 14 days | 9 days |
Start of September
The month of September starts in Jefferson Valley-Yorktown with hot temps, averaging around 27°C during the day and nights around 17°C.
Mid September
By mid-September, daytime temps drop to around 25°C, with nights around 15°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Jefferson Valley-Yorktown is around 23°C, while nighttime temps are about 13°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
UV index
The UV index is a maximum of 7 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.
Check out the climate of Jefferson Valley-Yorktown for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Jefferson Valley-Yorktown, New York. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Jefferson Valley-Yorktown
Temperature in September in Jefferson Valley-Yorktown over the years
Precipitation charts
These charts show the average amount of precipitation in September in Jefferson Valley-Yorktown, New York. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Jefferson Valley-Yorktown
Total precipitation in September in Jefferson Valley-Yorktown over the years
Daily UV index in September in Jefferson Valley-Yorktown
This chart shows the average daily UV index in September in Jefferson Valley-Yorktown, 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.
Weather experiences in September in Jefferson Valley-Yorktown
Have you been to Jefferson Valley-Yorktown in September?
Share your weather experience in September in Jefferson Valley-Yorktown.
Average weather in Jefferson Valley-Yorktown by month
Click on a month below to see detailed weather info for Jefferson Valley-Yorktown. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.