September Weather forecast - Autumn forecast

Weather in September
Frequently asked questions
Average temperature in September
Average pressure in September
Average wind speed in September
Average humidity in September
Average rainfall in September
Average rainfall days in September
Average snowfall in September
Average snowfall days in September
Average daylight in September
Average sunshine in September
Average sunshine days in September
Average UV index in September
Average cloud cover in September
Average visibility in September

The scenic Mountain Park within the Mine State Historical Park in Palmer Province, Alaska

Weather in September

The first month of the autumn, September, is still a chilly month in Palmer, Alaska, with an average temperature fluctuating between 48.7°F (9.3°C) and 36.5°F (2.5°C).

Temperature

In Palmer, Alaska, the average high-temperature in September marginally drops from a moderate 57.6°F (14.2°C) in August to a chilly 48.7°F (9.3°C). The average low-temperature, is 36.5°F (2.5°C).

Humidity

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

Rainfall

The month with the most rainfall in Palmer is September, when the rain falls for 20.6 days and typically aggregates up to 2.24" (57mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Palmer, Alaska, during the entire year, snow falls for 76.2 days and aggregates up to 33.5" (851mm) of snow.

Daylight

In September, the average length of the day is 12h and 52min.
On the first day of the month, sunrise is at 6:47 am and sunset at 9:05 pm. On the last day of September, in Palmer, sunrise is at 8:01 am and sunset at 7:31 pm AKDT.

Sunshine

In September, the average sunshine in Palmer is 8.1h.

UV index

The average daily maximum UV index in September in Palmer, Alaska, is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in September interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

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FAQ

What is the temperature in September in Palmer?

The average high-temperature, in September, is 48.7°F (9.3°C), while the average low-temperature is 36.5°F (2.5°C).

What is the average humidity in September in Palmer?

The average relative humidity in September is 77%.

What is the rainiest month in Palmer?

September is the month with the most rainfall in Palmer. Rain falls for 20.6 days and accumulates 2.24" (57mm) of precipitation.

How many days does it rain in September in Palmer?

In Palmer, Alaska, in September, during 20.6 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When does it start to snow in Palmer?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow.

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

The average day length in September in Palmer is 12h and 52min.

When is the sunrise / sunset in September in Palmer?

In September, on the first day of the month, sunrise is at 6:47 am and sunset at 9:05 pm. On the last day of the month, in Palmer, sunrise is at 8:01 am and sunset at 7:31 pm AKDT.

How long on average sun shines in September in Palmer?

In Palmer, Alaska, the average sunshine duration in September is 8.1h.

What is the UV index intensity in September in Palmer?

The average daily maximum UV index in September in Palmer is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

57.6°F 14.2°C

48.7°F 9.3°C

36.7°F 2.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.5mph 7.2km/h

5.1mph 8.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

7.7

7.5

11.6

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Palmer, AK

Average high temperature in September: 48.7°F

The warmest month (with the highest average high temperature) is July (61.2°F).
The month with the lowest average high temperature is January (18.1°F).

Average low temperature in September: 36.5°F

The month with the highest average low temperature is July (44.2°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

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Average pressure in September
Palmer, AK

Average pressure in September: 29.75"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.7"Hg).

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Average wind speed in September
Palmer, AK

Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is July (4mph).

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Average humidity in September
Palmer, AK

Average humidity in September: 77%

The month with the highest relative humidity is March (87%).
The months with the lowest relative humidity are May and June (69%).

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Average rainfall in September
Palmer, AK

Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is September (2.24").
The driest month (with the least rainfall) is January (0.91").

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Average rainfall days in September
Palmer, AK

Average rainfall days in September: 20.6 days

The month with the highest number of rainy days is June (22.4 days).
The month with the least rainy days is February (8.9 days).

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Average snowfall in September
Palmer, AK

Average snowfall in September: 0.08"

The month with the highest snowfall is February (6.93").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Palmer, AK

Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in September /
Average sunshine in September
Palmer, AK

Average daylight in September: 12h and 52min

The month with the longest days is June (Average daylight: 19h and 23min).
The month with the shortest days is December (Average daylight: 5h and 29min).

Average sunshine in September: 8h and 6min

The month with the most sunshine is May (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).

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Average sunshine days in September
Palmer, AK

Average sunshine days in September: 7.5 days

The month with the most sunshine days is January (13.9 days).
The month with the least sunshine days is June (5.3 days).

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Average UV index in September
Palmer, AK

Average UV index in September: 2

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Palmer, AK

Average cloud cover in September: 42

The month with the most cloud cover is April (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 37).

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Average visibility in September
Palmer, AK

Average visibility in September: 6mi

The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are February, March and April (4mi).

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September weather forecast
Palmer, AK

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