Climate and monthly weather forecast
Saint John Harbor, AK

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Weather in January

January, the same as December, is an icy winter month in Saint John Harbor, Alaska, with an average temperature fluctuating between 32.7°F (0.4°C) and 27.3°F (-2.6°C). The arrival of January records an average high-temperature of a still icy 32.7°F (0.4°C), closely related to the 32.4°F (0.2°C) observed in December. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Saint John Harbor, Alaska, with an average temperature fluctuating between 25.9°F (-3.4°C) and 32.9°F (0.5°C). Saint John Harbor experiences an average high-temperature of a still wintry 32.9°F (0.5°C) with the onset of February, subtly varied from January's 32.7°F (0.4°C). Weather in February »

Weather in March

The first month of the spring, March, is also a wintry month in Saint John Harbor, Alaska, with an average temperature fluctuating between 27.9°F (-2.3°C) and 36.9°F (2.7°C). Transitioning into March, Saint John Harbor experiences an average high-temperature of a still icy 36.9°F (2.7°C), marking a minor shift from the preceding month. Weather in March »

Weather in April

April in Saint John Harbor, Alaska, is a chilly spring month, with an average temperature varying between 43.3°F (6.3°C) and 34.3°F (1.3°C). April's arrival signals a modest temperature shift, moving from a cold 36.9°F (2.7°C) in March to a frosty 43.3°F (6.3°C). Weather in April »

Weather in May

May, the last month of the spring in Saint John Harbor, is a cool month, with an average temperature ranging between min 41.9°F (5.5°C) and max 51.6°F (10.9°C). The embrace of May brings a minor uplift in the average high-temperature, shifting from a frosty 43.3°F (6.3°C) in April to a cool 51.6°F (10.9°C). Weather in May »

Weather in June

June, the first month of the summer in Saint John Harbor, is a moderate month, with an average temperature fluctuating between 55.4°F (13°C) and 46.2°F (7.9°C). June's presence marks an average high-temperature of a moderate 55.4°F (13°C), subtly varied from May's 51.6°F (10.9°C). Weather in June »

Weather in July

July, the same as June, in Saint John Harbor, Alaska, is another mild summer month, with an average temperature fluctuating between 50.2°F (10.1°C) and 59.7°F (15.4°C). In Saint John Harbor, Alaska, July is the warmest month, with temperatures averaging a high of 59.7°F (15.4°C) and a low of 50.2°F (10.1°C). Weather in July »

Weather in August

August, the last month of the summer in Saint John Harbor, is another mild month, with an average temperature fluctuating between 50°F (10°C) and 59°F (15°C). The ushering in of August brings an average high-temperature of a still mild 59°F (15°C), closely mirroring the 59.7°F (15.4°C) of July. Weather in August »

Weather in September

The first month of the autumn, September, is also a fresh month in Saint John Harbor, Alaska, with an average temperature fluctuating between 46.4°F (8°C) and 54.3°F (12.4°C). As August turns into September, the average high-temperatures rest at a cool 54.3°F (12.4°C), showing a minor variation from the prior month. Weather in September »

Weather in October

October, the same as September, in Saint John Harbor, Alaska, is another chilly autumn month, with an average temperature fluctuating between 46°F (7.8°C) and 39.7°F (4.3°C). With the commencement of October, Saint John Harbor records a moderate temperature decline, with the average high easing from September's cool 54.3°F (12.4°C) to a chilly 46°F (7.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Saint John Harbor, Alaska, with temperature in the range of an average low of 32.4°F (0.2°C) and an average high of 37°F (2.8°C). Saint John Harbor's weather changes with the onset of November, slightly falling from a chilly 46°F (7.8°C) in October to a cold 37°F (2.8°C). Weather in November »

Weather in December

December, the first month of the winter in Saint John Harbor, is also a wintry month, with an average temperature ranging between max 32.4°F (0.2°C) and min 27.5°F (-2.5°C). The coldest month is December, with an average high-temperature of 32.4°F (0.2°C) and an average low-temperature of 27.5°F (-2.5°C). Weather in December »
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Frequently asked questions

What is the most humid month in Saint John Harbor?

January and August, with an average relative humidity of 86%, are most humid months.

How much does it rain in Saint John Harbor?

Throughout the year, in Saint John Harbor, Alaska, there are 197.9 rainfall days, and 53.03" (1347mm) of precipitation is accumulated.

When does it snow in Saint John Harbor?

Months with snowfall are January through May, October through December.

How many days does it snow in Saint John Harbor?

In Saint John Harbor, during the entire year, snow falls for 47.5 days and aggregates up to 58.23" (1479mm) of snow.

What is the month with the least sunshine in Saint John Harbor?

The months with the least sunshine are January and November, with an average of 3.4h of sunshine.

When does it snow the most in Saint John Harbor?

The month with the most snowfall is March, when snow falls for 10.8 days and typically aggregates up to 13.46" (342mm) of snow.

When is Daylight Saving Time (DST) in Saint John Harbor?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Saint John Harbor, and the time zone changes from AKST to AKDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from AKDT to AKST.

What is the least humid month in Saint John Harbor?

May is the least humid month in Saint John Harbor, Alaska, with an average relative humidity of 81%.

What is the driest month in Saint John Harbor?

May is the month with the least rainfall. Rain falls for 17.1 days and accumulates 2.01" (51mm) of precipitation.

What month has the most sunshine in Saint John Harbor?

May has the most sunshine of the year, with an average of 7.4h of sunshine.

When it does not snow in Saint John Harbor?

In Saint John Harbor, snow does not fall in June through September.

When are the longest days in Saint John Harbor?

The month with the longest days in Saint John Harbor is June, with an average of 17h and 36min of daylight.

What is the hottest time of year in Saint John Harbor?

July, recording an average high temperature of 59.7°F (15.4°C) and a low temperature of 50.2°F (10.1°C), is Saint John Harbor's warmest month.

What is the month with the highest UV index in Saint John Harbor?

July and August, with an average maximum UV index of 4, are months with the highest UV index in Saint John Harbor.

What is the wettest month in Saint John Harbor?

October is the month with the most rainfall. Rain falls for 20.1 days and accumulates 6.3" (160mm) of precipitation.

What is the month with the lowest UV index in Saint John Harbor?

November and December, with an average maximum UV index of 1, are months with the lowest UV index in Saint John Harbor.

What part of the year is the coldest in Saint John Harbor?

The month of December sees the average lowest temperatures in Saint John Harbor, reaching 32.4°F (0.2°C) at the peak and 27.5°F (-2.5°C) at the low.

What is the month with the shortest days in Saint John Harbor?

With an average of 7h and 0min of daylight, December has the shortest days of the year in Saint John Harbor, Alaska.

Average temperature
Saint John Harbor, AK

Average temperature - Saint John Harbor, AK

The warmest month (with the highest average high temperature) is July (59.7°F).
The month with the lowest average high temperature is December (32.4°F).

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).

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Average pressure
Saint John Harbor, AK

Average pressure - Saint John Harbor, AK

The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

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Average wind speed
Saint John Harbor, AK

Average wind speed - Saint John Harbor, AK

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is July (3.9mph).

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Average humidity
Saint John Harbor, AK

Average humidity - Saint John Harbor, AK

The months with the highest relative humidity are January and August (86%).
The month with the lowest relative humidity is May (81%).

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Average rainfall
Saint John Harbor, AK

Average rainfall - Saint John Harbor, AK

The wettest month (with the highest rainfall) is October (6.3").
The driest month (with the least rainfall) is May (2.01").

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Average rainfall days
Saint John Harbor, AK

Average rainfall days - Saint John Harbor, AK

The month with the highest number of rainy days is October (20.1 days).
The month with the least rainy days is February (9.5 days).

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Average snowfall
Saint John Harbor, AK

Average snowfall - Saint John Harbor, AK

The month with the highest snowfall is March (13.46").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Saint John Harbor, AK

Average snowfall days - Saint John Harbor, AK

The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Saint John Harbor, AK

Average daylight / Average sunshine - Saint John Harbor, AK

The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).

The month with the most sunshine is May (Average sunshine: 7h and 24min).
The months with the least sunshine are January and November (Average sunshine: 3h and 24min).

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Average sunshine days
Saint John Harbor, AK

Average sunshine days - Saint John Harbor, AK

The month with the most sunshine days is December (12.5 days).
The month with the least sunshine days is November (8 days).

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Average UV index
Saint John Harbor, AK

Average UV index - Saint John Harbor, AK

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

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Average visibility
Saint John Harbor, AK

Average visibility - Saint John Harbor, AK

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

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Saint John Harbor, Alaska, USA

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