September weather forecast and climate
Bellvale, NY

September, the first month of the autumn, in Bellvale, is still a warm month, with average temperature ranging between max 73.4°F (23°C) and min 54.1°F (12.3°C).

Temperature

In Bellvale, the average high-temperature in September marginally drops, from 80.6°F (27°C) in August, to a still warm 73.4°F (23°C). The average low-temperature, in Bellvale, is 54.1°F (12.3°C).

Humidity

In September, the average relative humidity is 79%.

Rainfall

September is the month with the least rainfall in Bellvale. Rain falls for 10.4 days and accumulates 0.63" (16mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Bellvale, the average length of the day is 12.5h.

Sunshine

In September, the average sunshine in Bellvale is 8.7h.

UV index

In Bellvale, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Bellvale?

In Bellvale, New York, in September, the average high-temperature is 73.4°F (23°C), and the average low-temperature is 54.1°F (12.3°C).

What is the average humidity in September in Bellvale?

In Bellvale, New York, the average relative humidity in September is 79%.

How much does it rain in Bellvale in September?

In September, the rain falls for 10.4 days. Throughout September, 0.63" (16mm) of precipitation is accumulated.

What is the driest month in Bellvale?

September is the month with the least rainfall in Bellvale. Rain falls for 10.4 days and accumulates 0.63" (16mm) of precipitation.

Does it snow in Bellvale in September?

In Bellvale, New York, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Bellvale?

In Bellvale snow does not fall in June through September.

What is the average length of the day in September in Bellvale?

In September, the average length of the day in Bellvale, New York, is 12.5h.

How many hours of sunshine does Bellvale have in September?

In September, the average sunshine is 8.7h.

What is the UV index reading in September in Bellvale?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Bellvale, NY
  • Average high temperature in September: 23°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is January (0.7°C).

  • Average low temperature in September: 12.3°C

The month with the highest average low temperature is July (16.7°C).
The coldest month (with the lowest average low temperature) is January (-6.4°C).

Average pressure in September - Bellvale, NY
  • Average pressure in September: 1017.9mbar

The month with the highest atmospheric pressure is November (1019.5mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in September - Bellvale, NY
  • Average wind speed in September: 8.3km/h

The windiest months (with the highest average wind speed) are January and March (12km/h).
The calmest month (with the lowest average wind speed) is August (7.6km/h).

Average humidity in September - Bellvale, NY
  • Average humidity in September: 79%

Months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September - Bellvale, NY
  • Average rainfall in September: 16mm

The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is September (16mm).

Average rainfall days in September - Bellvale, NY
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in September - Bellvale, NY
  • Average snowfall in September: 0mm

The month with the highest snowfall is March (43mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September - Bellvale, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (7.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Bellvale, NY
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.4h).

Average sunshine days in September - Bellvale, NY
  • Average sunshine days in September: 16.9 days

Months with the most sunshine days are January and November (20.4 days).
The month with the least sunshine days is June (12.5 days).

Average UV index in September - Bellvale, NY
  • Average UV index in September: 4

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September - Bellvale, NY
  • Average cloud cover in September: 40

The month with the most cloud cover is February (Cloud cover 51).
Months with the least cloud cover are July and August (Cloud cover 35).

Average visibility in September - Bellvale, NY
  • Average visibility in September: 8km

Months with the highest visibility are April and November (9km).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (8km).