Weathermondo.com
United StatesThe weather in September in New Castle
It's warm in September in New Castle with an average temperature of 23°C. Temperatures this month range from a low of 17°C to a high of 27°C. At night, you can expect temperatures between 10°C and 17°C.
Looking for great weather? September is a good time to be in New Castle. The temperatures are nice, and there’s not too much 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 New Castle, New Hampshire. 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, New Castle reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 11°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 22°C.
Rainfall amount
In September, there is an average of 74 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in September for New Castle
Click on any day in September to get detailed info about the usual weather on that day in New Castle. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| New Castle | New York | |
|---|---|---|
| Average temperature | 23°C | 27°C |
| Max. temperature | 27°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 74 mm | 57 mm |
| Rainy days | 10 days | 9 days |
Start of September
The month of September starts in New Castle with warm temps, averaging around 26°C during the day and nights around 16°C.
Mid September
By mid-September, daytime temps drop to around 23°C, with nights around 14°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 New Castle is around 22°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.
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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 New Castle for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in New Castle, New Hampshire. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in New Castle
Temperature in September in New Castle over the years
Precipitation charts
These charts show the average amount of precipitation in September in New Castle, New Hampshire. 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 New Castle
Total precipitation in September in New Castle over the years
Daily UV index in September in New Castle
This chart shows the average daily UV index in September in New Castle, 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 New Castle
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Average weather in New Castle by month
Click on a month below to see detailed weather info for New Castle. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.