September weather forecast and climate
Highmount, NY

September, the first month of the autumn, in Highmount, is still a comfortable month, with temperature in the range of an average high of 67.6°F (19.8°C) and an average low of 48.2°F (9°C).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 73.9°F (23.3°C) in August, to an enjoyable 67.6°F (19.8°C). The average low-temperature, in Highmount, is 48.2°F (9°C).

Humidity

In Highmount, the average relative humidity is 83%.

Rainfall

The month with the least rainfall is September when the rain falls for 14 days and typically collects 2.99" (76mm) of precipitation.

Snowfall

In Highmount snow does not fall in June through September.

Daylight

In Highmount, New York, the average length of the day is 12.5h.

Sunshine

In Highmount, the average sunshine is 7.3h.

UV index

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. 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 Highmount?

In Highmount, in September, the average high-temperature is 67.6°F (19.8°C), and the average low-temperature is 48.2°F (9°C).

What is the average humidity in September in Highmount?

The average relative humidity in September is 83%.

How much does it rain in Highmount in September?

In Highmount, during September, the rain falls for 14 days and regularly aggregates up to 2.99" (76mm) of precipitation.

What is the driest month in Highmount?

The month with the least rainfall in Highmount, New York, is September when the rain falls for 14 days and typically collects 2.99" (76mm) of precipitation.

Does it snow in Highmount in September?

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

When it does not snow in Highmount?

In Highmount snow does not fall in June through September.

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

In September, the average length of the day in Highmount is 12.5h.

How long on average sun shines in September in Highmount?

In September, the average sunshine is 7.3h.

What is the UV index intensity in September in Highmount?

In Highmount, New York, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Highmount, NY
  • Average high temperature in September: 19.8°C

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.3°C).

  • Average low temperature in September: 9°C

The month with the highest average low temperature is July (13.5°C).
The coldest month (with the lowest average low temperature) is January (-10.1°C).

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

The month with the highest atmospheric pressure is November (1019.2mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).

Average wind speed in September - Highmount, NY
  • Average wind speed in September: 8.5km/h

The windiest month (with the highest average wind speed) is January (13.4km/h).
The calmest month (with the lowest average wind speed) is August (8.1km/h).

Average humidity in September - Highmount, NY
  • Average humidity in September: 83%

Months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (80%).

Average rainfall in September - Highmount, NY
  • Average rainfall in September: 76mm

The wettest month (with the highest rainfall) is July (115mm).
The driest month (with the least rainfall) is September (76mm).

Average rainfall days in September - Highmount, NY
  • Average rainfall days in September: 14 days

Months with the highest number of rainy days are May and July (19.9 days).
The month with the least rainy days is February (6.4 days).

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

Months with the highest snowfall are February and December (440mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is January (22.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 7.3h

The month with the most sunshine is July (Average sunshine: 9.3h).
The month with the least sunshine is February (Average sunshine: 2.8h).

Average sunshine days in September - Highmount, NY
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is February (5.4 days).

Average UV index in September - Highmount, NY
  • Average UV index in September: 3

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 1).

Average cloud cover in September - Highmount, NY
  • Average cloud cover in September: 51

The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 46).

Average visibility in September - Highmount, NY
  • Average visibility in September: 7km

The month with the highest visibility is June (8km).
The month with the lowest visibility is February (6km).