Concord
New Hampshire, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Concord, NH

A rocky coast overlooking beach homes in Rye, Concord point, New Hampshire
A rocky coast overlooking beach homes in Rye, Concord point, New Hampshire
September, the first month of the autumn, in Concord, is still a pleasant month, with average temperature fluctuating between 47.5°F (8.6°C) and 72.7°F (22.6°C).

Temperature

In Concord, the average high-temperature slightly decreases, from a moderately hot 81°F (27.2°C) in August, to an agreeable 72.7°F (22.6°C). The average low-temperature, in Concord, is 47.5°F (8.6°C).

Humidity

September is the most humid month in Concord, with an average relative humidity of 76.3%.

Rainfall

In September, the rain falls for 9.3 days. Throughout September, 3.4" (85.9mm) of precipitation is accumulated. Throughout the year, there are 130.9 rainfall days, and 40.6" (1031.6mm) of precipitation is accumulated.

Snowfall

In Concord snow does not fall in May through October.

Daylight

In Concord, New Hampshire, the average length of the day is 12.5h.

Sunshine

The average sunshine in Concord is 7.2h.

UV index

The average daily maximum UV index in Concord is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 Concord?

The average high-temperature, in September, is 72.7°F (22.6°C), while the average low-temperature is 47.5°F (8.6°C).

What is the most humid month in Concord?

With an average relative humidity of 76.3%, September is the most humid month in Concord, New Hampshire.

What is the average humidity in September in Concord?

In September, the average relative humidity in Concord, New Hampshire, is 76.3%.

How many days does it rain in September in Concord?

In Concord, in September, during 9.3 rainfall days, 3.4" (85.9mm) of precipitation is typically accumulated.

When it does not snow in Concord?

In Concord snow does not fall in May through October.

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

The average length of the day in September in Concord, New Hampshire, is 12.5h.

How long on average sun shines in September in Concord?

In September, the average sunshine in Concord is 7.2h.

What is the UV index intensity in September in Concord?

In September, the average daily maximum UV index in Concord, New Hampshire, is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.
Average temperature in September - Concord, NH
  • Average high temperature in September: 72.6°F

The warmest month (with the highest average high temperature) is July (82.3°F).
The month with the lowest average high temperature is January (30.8°F).

  • Average low temperature in September: 47.4°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).

Average humidity in September - Concord, NH
  • Average humidity in September: 76.3%

The month with the highest relative humidity is September (76.3%).
The month with the lowest relative humidity is April (62%).

Average rainfall in September - Concord, NH
  • Average rainfall in September: 3.4"

The wettest month (with the highest rainfall) is October (4").
The driest month (with the lowest rainfall) is February (2.6").

Average rainfall days in September - Concord, NH
  • Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is June (12.7 days).
The month with the lowest number of rainy days is September (9.3 days).

Average snowfall in September - Concord, NH
  • Average snowfall in September: 0"

The month with the highest snowfall is January (18.1").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in September - Concord, NH
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.2 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Concord, NH
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 7.2h

The month with most sunshine is July (Average sunshine: 9.5h).
Months with least sunshine are November and December (Average sunshine: 4.3).

Average UV index in September - Concord, NH
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).