Monthly weather forecast and climate
Koyukuk, AK

Weather in January

January, like December, is another arctic cold winter month in Koyukuk, Alaska, with average temperature ranging between min -10.5°F (-23.6°C) and max -0.8°F (-18.2°C). With an average high-temperature of -0.8°F (-18.2°C) and an average low-temperature of -10.5°F (-23.6°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter, in Koyukuk, is an extremely cold month, with average temperature fluctuating between 8.4°F (-13.1°C) and -5.1°F (-20.6°C). In Koyukuk, the average high-temperature in February rises, from a polar cold -0.8°F (-18.2°C) in January, to an extremely cold 8.4°F (-13.1°C). Weather in February »

Weather in March

The first month of the spring, March, is a subzero cold month in Koyukuk, Alaska, with average temperature varying between -0.4°F (-18°C) and 15.1°F (-9.4°C). In March, the average high-temperature marginally rises, from an extreme cold 8.4°F (-13.1°C) in February, to a subzero cold 15.1°F (-9.4°C). Weather in March »

Weather in April

April, the same as March, in Koyukuk, Alaska, is a freezing cold spring month, with average temperature ranging between max 31.1°F (-0.5°C) and min 18°F (-7.8°C). In Koyukuk, the average high-temperature significantly increases, from 15.1°F (-9.4°C) in March, to a still subzero cold 31.1°F (-0.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a cool month in Koyukuk, Alaska, with average temperature varying between 53.2°F (11.8°C) and 35.8°F (2.1°C). In May, the average high-temperature soars, from a subzero cold 31.1°F (-0.5°C) in April, to a cool 53.2°F (11.8°C). Weather in May »

Weather in June

June, the first month of the summer, in Koyukuk, is a comfortable month, with average temperature ranging between max 66.4°F (19.1°C) and min 46.4°F (8°C). In Koyukuk, the average high-temperature in June rises, from a cool 53.2°F (11.8°C) in May, to an enjoyable 66.4°F (19.1°C). Weather in June »

Weather in July

July, like June, in Koyukuk, Alaska, is another comfortable summer month, with average temperature fluctuating between 49.5°F (9.7°C) and 67.3°F (19.6°C). July is the warmest month, with an average high-temperature of 67.3°F (19.6°C) and an average low-temperature of 49.5°F (9.7°C). Weather in July »

Weather in August

August, the last month of the summer, in Koyukuk, is another mild month, with average temperature ranging between min 45°F (7.2°C) and max 60.4°F (15.8°C). In Koyukuk, the average high-temperature marginally drops, from a comfortable 67.3°F (19.6°C) in July, to a mild 60.4°F (15.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Koyukuk, is also a frosty month, with average temperature ranging between min 35.6°F (2°C) and max 48.7°F (9.3°C). In Koyukuk, the average high-temperature decreases, from a mild 60.4°F (15.8°C) in August, to a frosty 48.7°F (9.3°C). Weather in September »

Weather in October

October, like September, in Koyukuk, Alaska, is another cold autumn month, with temperature in the range of an average low of 24.4°F (-4.2°C) and an average high of 32.5°F (0.3°C). In October, the average high-temperature declines considerably, from a chilly 48.7°F (9.3°C) in September, to a cold 32.5°F (0.3°C). Weather in October »

Weather in November

November, the last month of the autumn, in Koyukuk, is also a frigid cold month, with average temperature fluctuating between 2.3°F (-16.5°C) and 10.6°F (-11.9°C). In Koyukuk, the average high-temperature declines considerably, from a wintry 32.5°F (0.3°C) in October, to a frigid cold 10.6°F (-11.9°C). Weather in November »

Weather in December

The first month of the winter, December, is still a polar cold month in Koyukuk, Alaska, with temperature in the range of an average high of 3.9°F (-15.6°C) and an average low of -5.4°F (-20.8°C). In Koyukuk, Alaska, the average high-temperature in December slightly decreases, from an extreme cold 10.6°F (-11.9°C) in November, to an arctic cold 3.9°F (-15.6°C). Weather in December »
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FAQ

What is the coldest month in Koyukuk?

January is the coldest month, with an average high-temperature of -0.8°F (-18.2°C) and an average low-temperature of -10.5°F (-23.6°C).

What is the most humid month in Koyukuk?

Months with the highest humidity in Koyukuk, Alaska, are January through March, with an average relative humidity of 96%.

How much does it rain in Koyukuk?

In Koyukuk, during the entire year, the rain falls for 116.7 days and collects up to 14.8" (376mm) of precipitation.

What is the driest month in Koyukuk?

January is the month with the least rainfall. Rain falls for 2.3 days and accumulates 0.59" (15mm) of precipitation.

When does it snow in Koyukuk?

January through May, September through December are months with snowfall.

How much does it snow in Koyukuk?

Throughout the year, in Koyukuk, Alaska, there are 115.2 snowfall days, and 43.07" (1094mm) of snow is accumulated.

What is the month with the lowest UV index in Koyukuk?

Months with the lowest UV index in Koyukuk are January through March, October through December, with an average maximum UV index of 1.

What month has the most sunshine in Koyukuk?

With an average of 8.1h of sunshine, May has the most sunshine of the year in Koyukuk.

What is the month with the highest UV index in Koyukuk?

May through July, with an average maximum UV index of 4, are months with the highest UV index.

What is the least humid month in Koyukuk?

The least humid month in Koyukuk is June, with an average relative humidity of 59%.

When it does not snow in Koyukuk?

June through August are months without snowfall in Koyukuk, Alaska.

When are the longest days in Koyukuk?

With an average of 21.6h of daylight, June has the longest days of the year.

What is the warmest month in Koyukuk?

The warmest month in Koyukuk is July, with an average high-temperature of 67.3°F (19.6°C) and an average low-temperature of 49.5°F (9.7°C).

What is the rainiest month in Koyukuk?

The month with the most rainfall is August when the rain falls for 19 days and typically aggregates up to 2.05" (52mm) of precipitation.

What is the snowiest month in Koyukuk?

The month with the most snowfall in Koyukuk is December when snow falls for 17.5 days and typically aggregates up to 8.62" (219mm) of snow.

What is the month with the shortest days in Koyukuk?

With an average of 3.9h of daylight, December has the shortest days of the year in Koyukuk.

What is the month with the least sunshine in Koyukuk?

December has the least sunshine of the year, with an average of 2.3h of sunshine.

Average temperature
Koyukuk, AK

Average temperature - Koyukuk, AK

The warmest month (with the highest average high temperature) is July (67.3°F).
The month with the lowest average high temperature is January (-0.8°F).

The month with the highest average low temperature is July (49.5°F).
The coldest month (with the lowest average low temperature) is January (-10.5°F).

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Average pressure
Koyukuk, AK

Average pressure - Koyukuk, AK

The month with the highest atmospheric pressure is February (29.93").
Months with the lowest atmospheric pressure are September and October (29.76").

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Average wind speed
Koyukuk, AK

Average wind speed - Koyukuk, AK

The windiest month (with the highest average wind speed) is September (5.2mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).

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Average humidity
Koyukuk, AK

Average humidity - Koyukuk, AK

Months with the highest relative humidity are January, February and March (96%).
The month with the lowest relative humidity is June (59%).

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Average rainfall
Koyukuk, AK

Average rainfall - Koyukuk, AK

The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days
Koyukuk, AK

Average rainfall days - Koyukuk, AK

The month with the highest number of rainy days is August (19 days).
Months with the least rainy days are January and February (2.3 days).

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Average snowfall
Koyukuk, AK

Average snowfall - Koyukuk, AK

The month with the highest snowfall is December (8.62").
Months with the least snowfall are June, July and August (0").

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Average snowfall days
Koyukuk, AK

Average snowfall days - Koyukuk, AK

The month with the highest number of snowfall days is March (20.3 days).
Months with the least snowfall days are June and July (0 days).

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Average daylight / Average sunshine
Koyukuk, AK

Average daylight / Average sunshine - Koyukuk, AK

The month with the longest days is June (Average daylight: 21.6h).
The month with the shortest days is December (Average daylight: 3.9h).

The month with the most sunshine is May (Average sunshine: 8.1h).
The month with the least sunshine is December (Average sunshine: 2.3h).

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Average sunshine days
Koyukuk, AK

Average sunshine days - Koyukuk, AK

The month with the most sunshine days is January (18 days).
The month with the least sunshine days is April (6.5 days).

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Average UV index
Koyukuk, AK

Average UV index - Koyukuk, AK

Months with the highest UV index are May, June and July (UV index 4).
Months with the lowest UV index are January, February, March, October, November and December (UV index 1).

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Average visibility
Koyukuk, AK

Average visibility - Koyukuk, AK

Months with the highest visibility are June and July (6mi).
Months with the lowest visibility are January, February, March, April and December (2mi).

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