September weather forecast and climate
Litchfield, NH

September, the first month of the autumn, in Litchfield, is also an agreeable month, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 72.5°F (22.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 80.2°F (26.8°C) in August, to an agreeable 72.5°F (22.5°C). In September, in Litchfield, the average low-temperature is 53.8°F (12.1°C).

Humidity

In Litchfield, the average relative humidity in September is 77%.

Rainfall

The month with the least rainfall is September when the rain falls for 7 days and typically collects 0.28" (7mm) of precipitation.

Snowfall

In Litchfield snow does not fall in June through September.

Daylight

The average length of the day in September is 12.5h.

Sunshine

In Litchfield, the average sunshine is 8.4h.

UV index

In September, the average daily maximum UV index in Litchfield, New Hampshire, is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Litchfield?

The average high-temperature, in September, is 72.5°F (22.5°C), while the average low-temperature is 53.8°F (12.1°C).

What is the average humidity in September in Litchfield?

In Litchfield, the average relative humidity in September is 77%.

How much does it rain in Litchfield in September?

In September, in Litchfield, the rain falls for 7 days. Throughout September, 0.28" (7mm) of precipitation is accumulated.

What is the driest month in Litchfield?

The month with the least rainfall is September when the rain falls for 7 days and typically collects 0.28" (7mm) of precipitation.

Does it snow in Litchfield in September?

In Litchfield, New Hampshire, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Litchfield?

In Litchfield, New Hampshire, snow does not fall in June through September.

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

The average length of the day in September in Litchfield is 12.5h.

How long on average sun shines in September in Litchfield?

The average sunshine in September in Litchfield is 8.4h.

What is the UV index intensity in September in Litchfield?

In Litchfield, New Hampshire, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Litchfield, NH
  • Average high temperature in September: 22.5°C

The warmest month (with the highest average high temperature) is July (27.8°C).
The month with the lowest average high temperature is January (-0.6°C).

  • Average low temperature in September: 12.1°C

The month with the highest average low temperature is July (16.4°C).
The coldest month (with the lowest average low temperature) is January (-7.8°C).

Average pressure in September - Litchfield, NH
  • Average pressure in September: 1017.7mbar

The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed in September - Litchfield, NH
  • Average wind speed in September: 8.8km/h

The windiest month (with the highest average wind speed) is January (13.1km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).

Average humidity in September - Litchfield, NH
  • Average humidity in September: 77%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (71%).

Average rainfall in September - Litchfield, NH
  • Average rainfall in September: 7mm

The wettest month (with the highest rainfall) is November (20mm).
The driest month (with the least rainfall) is September (7mm).

Average rainfall days in September - Litchfield, NH
  • Average rainfall days in September: 7 days

The month with the highest number of rainy days is June (10.4 days).
The month with the least rainy days is January (3.5 days).

Average snowfall in September - Litchfield, NH
  • Average snowfall in September: 0mm

Months with the highest snowfall are February and December (32mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is February (6.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in September - Litchfield, NH
  • Average sunshine days in September: 21.6 days

The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (17.3 days).

Average UV index in September - Litchfield, NH
  • Average UV index in September: 4

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

Average cloud cover in September - Litchfield, NH
  • Average cloud cover in September: 37

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in September - Litchfield, NH
  • Average visibility in September: 8km

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