United StatesAverage weather for Jefferson Valley-Yorktown in September
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.
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. 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 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.
In September, there is an average of 110 mm of precipitation, spread over 9 days. The wind speed is around 3 Bft, mostly coming from the South.
Jefferson Valley-Yorktown in September |
New York | ||
|---|---|---|---|
 Average temperature |
25°C | 27°C | |
 Max. temperature |
29°C | 31°C | |
| Min. temperature |
19°C | -5°C | |
 Total precipitation |
110 mm | 57 mm | |
| Rainy days |
9 days | 9 days | |
August
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.
Is September a good time to visit Jefferson Valley-Yorktown?
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.
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.
Check out the climate of Jefferson Valley-Yorktown for all months and discover the best travel time
Daily Temperature in September in Jefferson Valley-Yorktown
This chart shows the average daily high and low temperatures in September for Jefferson Valley-Yorktown, 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 Jefferson Valley-Yorktown
The chart below shows the average daily precipitation in September for Jefferson Valley-Yorktown, 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 9 days of precipitation in Jefferson Valley-Yorktown.
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.
Temperature in September in Jefferson Valley-Yorktown over the years
This chart shows the average temperature in September in Jefferson Valley-Yorktown, measured in degrees Celsius, over the past few years.
Total precipitation in September in Jefferson Valley-Yorktown over the years
This chart shows the average precipitation in September in Jefferson Valley-Yorktown, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
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.
Weather experiences in September in Jefferson Valley-Yorktown
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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.
Or check out the climate of Jefferson Valley-Yorktown for all months at once
