September weather forecast
Sand Point, AK

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Weather in September

In Sand Point, September is the threshold to the cooler autumn months. While temperatures begin to recede, humidity levels remain relatively high. With a notable increase in rainfall to 2.28in, the wetter season commences. Wind speeds also start to pick up from the mild summer breezes. On the threshold of October, temperatures start to fall noticeably, signaling the arrival of colder months ahead.

Temperature

The transition into September notes an average high-temperature of a still fresh 51.6°F (10.9°C), revealing a mild distinction from the 54.7°F (12.6°C) in August. In Sand Point, the average low-temperature during September nights tends to settle at a frosty 48.2°F (9°C), indicating a slight drop from the daytime peak.

Humidity

In September, the average relative humidity in Sand Point is 84%.

Rainfall

In September, the rain falls for 14.8 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 172 rainfall days, and 32.6" (828mm) of precipitation is accumulated.

Snowfall

In Sand Point, snow does not fall in June through September.

Ocean temperature

In September, the average ocean temperature is 51.1°F (10.6°C).
Note: Immersing oneself in 51.1°F (10.6°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.

Daylight

The average length of the day in September is 12h and 41min.
On the first day of the month, sunrise is at 7:49 am and sunset at 9:33 pm. On the last day of September, sunrise is at 8:44 am and sunset at 8:18 pm AKDT.

Sunshine

In Sand Point, the average sunshine in September is 5.3h.

UV index

In Sand Point, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, a regular UV index of 2 translates into these guidelines:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

What is the average September temperature?

The average high-temperature and low-temperature during September are 51.6°F (10.9°C) and 48.2°F (9°C) respectively.

What is the average humidity in September?

In September, the average relative humidity is 84%.

How many days does it rain in September?

In Sand Point, in September, during 14.8 rainfall days, 2.28" (58mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the ocean temperature in September in Sand Point?

In September, the average ocean temperature is 51.1°F (10.6°C). Swimming in 51.1°F (10.6°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Sand Point have in September?

In Sand Point, the average day length in September is 12h and 41min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:49 am and sunset at 9:33 pm. On the last day of the month, sunrise is at 8:44 am and sunset at 8:18 pm AKDT.

How long on average sun shines in September?

The average sunshine duration in September is 5.3h.

How high is the UV index in September?

The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sand Point, AK

Average temperature in September - Sand Point, AK
  • Average high temperature in September: 51.6°F

The warmest month (with the highest average high temperature) is August (54.7°F).
The month with the lowest average high temperature is March (34°F).

  • Average low temperature in September: 48.2°F

The month with the highest average low temperature is August (50.9°F).
The coldest month (with the lowest average low temperature) is March (28.9°F).

Average pressure in September
Sand Point, AK

Average pressure in September - Sand Point, AK
  • Average pressure in September: 29.75"Hg

The month with the highest atmospheric pressure is July (29.98"Hg).
The months with the lowest atmospheric pressure are January and December (29.52"Hg).

Average wind speed in September
Sand Point, AK

Average wind speed in September - Sand Point, AK
  • Average wind speed in September: 13.7mph

The windiest month (with the highest average wind speed) is December (16.8mph).
The calmest month (with the lowest average wind speed) is July (9.2mph).

Average humidity in September
Sand Point, AK

Average humidity in September - Sand Point, AK
  • Average humidity in September: 84%

The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is November (79%).

Average rainfall in September
Sand Point, AK

Average rainfall in September - Sand Point, AK
  • Average rainfall in September: 2.28"

The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is July (1.26").

Average rainfall days in September
Sand Point, AK

Average rainfall days in September - Sand Point, AK
  • Average rainfall days in September: 14.8 days

The month with the highest number of rainy days is December (18.2 days).
The month with the least rainy days is June (10.3 days).

Average snowfall in September
Sand Point, AK

Average snowfall in September - Sand Point, AK
  • Average snowfall in September: 0"

The month with the highest snowfall is January (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Sand Point, AK

Average snowfall days in September - Sand Point, AK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in September
Sand Point, AK

Average sea temperature in September - Sand Point, AK
  • Average sea temperature in September: 51.2°F

The best month for swimming (with the highest average sea temperature) is August (53.1°F).
The coldest month (with the lowest average sea temperature) is March (38°F).

Average daylight in September /
Average sunshine in September
Sand Point, AK

Average daylight in September / Average sunshine in September - Sand Point, AK
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 12min).

  • Average sunshine in September: 5h and 2min

The month with the most sunshine is June (Average sunshine: 6h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).

Average sunshine days in September
Sand Point, AK

Average sunshine days in September - Sand Point, AK
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is June (17.7 days).
The month with the least sunshine days is December (4.6 days).

Average UV index in September
Sand Point, AK

Average UV index in September - Sand Point, AK
  • Average UV index in September: 2

The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are March and December (UV index 1).

Average cloud cover in September
Sand Point, AK

Average cloud cover in September - Sand Point, AK
  • Average cloud cover in September: 60

The months with the most cloud cover are February and December (Cloud cover 68).
The months with the least cloud cover are March and September (Cloud cover 60).

Average visibility in September
Sand Point, AK

Average visibility in September - Sand Point, AK
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

Sand Point, Alaska, USA

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