September weather forecast and climate
Upton, NY

The first month of the autumn, September, is also an agreeable month in Upton, New York, with average temperature fluctuating between 65.3°F (18.5°C) and 71.4°F (21.9°C).

Temperature

In September, the average high-temperature marginally drops, from a warm 77.5°F (25.3°C) in August, to a pleasant 71.4°F (21.9°C). The average low-temperature, in Upton, New York, is 65.3°F (18.5°C).

Humidity

In Upton, the average relative humidity is 75%.

Rainfall

Months with the least rainfall are January, February and September Rain falls for 12.4 days and accumulates 2.01" (51mm) of rain.

Snowfall

In Upton snow does not fall in May through October.

Daylight

The average length of the day in September is 12.4h.

Sunshine

In Upton, the average sunshine in September is 9.1h.

UV index

The average daily maximum UV index in Upton is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Upton?

In September, the average high-temperature is 71.4°F (21.9°C), and the average low-temperature is 65.3°F (18.5°C).

What is the average humidity in September in Upton?

In September, the average relative humidity is 75%.

How many days does it rain in September in Upton?

In September, in Upton, New York, the rain falls for 12.4 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

What is the driest month in Upton?

January, February and September are months with the least rain in Upton, New York, when the rain falls for 12.4 days and typically aggregates up to 2.01" (51mm) of rain.

When it does not snow in Upton?

In Upton snow does not fall in May through October.

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

The average length of the day in September is 12.4h.

How many hours of sunshine does Upton have in September?

In September, the average sunshine in Upton is 9.1h.

How high is the UV index in September in Upton?

In Upton, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Upton, NY
  • Average high temperature in September: 21.9°C

The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (3.7°C).

  • Average low temperature in September: 18.5°C

Months with the highest average low temperature are July and August (21.9°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).

Average pressure in September - Upton, NY
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is November (1018.9mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in September - Upton, NY
  • Average wind speed in September: 17.9km/h

The windiest month (with the highest average wind speed) is January (23.3km/h).
The calmest month (with the lowest average wind speed) is July (15.4km/h).

Average humidity in September - Upton, NY
  • Average humidity in September: 75%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is November (71%).

Average rainfall in September - Upton, NY
  • Average rainfall in September: 51mm

The wettest month (with the highest rainfall) is December (84mm).
The driest months (with the least rainfall) are January, February and September (51mm).

Average rainfall days in September - Upton, NY
  • Average rainfall days in September: 12.4 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (9 days).

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

The month with the highest snowfall is January (38mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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

The month with the highest number of snowfall days is February (5.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Upton, NY
  • Average daylight in September: 12.4h

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: 9.1h

Months with the most sunshine are July and August (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in September - Upton, NY
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is February (12.8 days).

Average UV index in September - Upton, NY
  • Average UV index in September: 5

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March and December (UV index 2).

Average cloud cover in September - Upton, NY
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in September - Upton, NY
  • Average visibility in September: 10km

Months with the highest visibility are April, June, July, August, September, October and November (10km).
Months with the lowest visibility are January, February, March, May and December (9km).