September weather forecast
Houlton, ME

Weather in September

The first month of the autumn, September, is still a comfortable month in Houlton, Maine, with an average temperature ranging between max 66.4°F (19.1°C) and min 47.1°F (8.4°C).

Temperature

In Houlton, the average high-temperature in September marginally drops from a moderately hot 74.5°F (23.6°C) in August to a comfortable 66.4°F (19.1°C). The average low-temperature, in Houlton, is 47.1°F (8.4°C).

Humidity

In Houlton, the average relative humidity in September is 80%.

Rainfall

In Houlton, during September, the rain falls for 12.6 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Houlton, during the entire year, the rain falls for 147.4 days and collects up to 31.81" (808mm) of precipitation.

Snowfall

June through September are months without snowfall in Houlton.

Daylight

The average length of the day in September is 12h and 32min.
On the first day of September, sunrise is at 5:52 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 6:13 pm EDT.

Sunshine

The average sunshine in September in Houlton is 7.4h.

UV index

In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the average humidity in September in Houlton?

In September, the average relative humidity in Houlton, Maine, is 80%.

How much does it rain in Houlton in September?

In Houlton, Maine, during September, the rain falls for 12.6 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow in Houlton?

June through September are months without snowfall.

Does it snow in Houlton in September?

In Houlton, in September, it doesn't snow. In October, it regularly snows.

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

The average day length in September is 12h and 32min.

When are sunrise and sunset in September in Houlton?

In September, on the first day of the month, sunrise is at 5:52 am and sunset at 7:10 pm. On the last day of the month, in Houlton, sunrise is at 6:28 am and sunset at 6:13 pm EDT.

How many hours of sunshine does Houlton have in September?

In September, the average sunshine duration in Houlton is 7.4h.

What is the UV index reading in September in Houlton?

The average daily maximum UV index in September in Houlton is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Houlton, ME

Average temperature in September - Houlton, ME
  • Average high temperature in September: 66.4°F

The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (21.9°F).

  • Average low temperature in September: 47.1°F

The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).

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Average pressure in September
Houlton, ME

Average pressure in September - Houlton, ME
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Houlton, ME

Average wind speed in September - Houlton, ME
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in September
Houlton, ME

Average humidity in September - Houlton, ME
  • Average humidity in September: 80%

The months with the highest relative humidity are January, February and March (91%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in September
Houlton, ME

Average rainfall in September - Houlton, ME
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (2.17").

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Average rainfall days in September
Houlton, ME

Average rainfall days in September - Houlton, ME
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (4.3 days).

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Average snowfall in September
Houlton, ME

Average snowfall in September - Houlton, ME
  • Average snowfall in September: 0"

The months with the highest snowfall are January and February (13.07").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Houlton, ME

Average snowfall days in September - Houlton, ME
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Houlton, ME

Average daylight in September / Average sunshine in September - Houlton, ME
  • Average daylight in September: 12h and 32min

The month with the longest days is June (Average daylight: 15h and 43min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in September: 7h and 24min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).

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Average sunshine days in September
Houlton, ME

Average sunshine days in September - Houlton, ME
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is April (8.7 days).

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Average UV index in September
Houlton, ME

Average UV index in September - Houlton, ME
  • Average UV index in September: 3

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

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Average cloud cover in September
Houlton, ME

Average cloud cover in September - Houlton, ME
  • Average cloud cover in September: 44

The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 42).

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Average visibility in September
Houlton, ME

Average visibility in September - Houlton, ME
  • Average visibility in September: 5mi

The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).

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