Climate and monthly weather forecastPort Chilkoot, AK
Climate and monthly weather forecast
Weather in January
January, the same as December, in Port Chilkoot, Alaska, is a freezing cold winter month, with an average temperature varying between 13.5°F (-10.3°C) and 21.6°F (-5.8°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 21.6°F (-5.8°C) and a low of 13.5°F (-10.3°C). Weather in January »Weather in February
February, the last month of the winter in Port Chilkoot, is another freezing cold month, with an average temperature ranging between min 12.4°F (-10.9°C) and max 24.6°F (-4.1°C). The weather during February records an average high-temperature of a still subzero cold 24.6°F (-4.1°C), closely mirroring the preceding month. Weather in February »Weather in March
The first month of the spring, March, is also a subzero cold month in Port Chilkoot, Alaska, with temperature in the range of an average low of 14°F (-10°C) and an average high of 27.9°F (-2.3°C). March brings a marginal elevation to a still freezing cold 27.9°F (-2.3°C) from February's 24.6°F (-4.1°C) in Port Chilkoot's average high-temperatures. Weather in March »Weather in April
April is a cold spring month in Port Chilkoot, Alaska, with an average temperature ranging between max 35.2°F (1.8°C) and min 23.2°F (-4.9°C). The transition from March to April brings a subtle temperature rise, with average high-temperatures increasing from a freezing cold 27.9°F (-2.3°C) to an icy 35.2°F (1.8°C). Weather in April »Weather in May
The last month of the spring, May, is a frosty month in Port Chilkoot, Alaska, with an average temperature fluctuating between 33.8°F (1°C) and 46.2°F (7.9°C). The shift into May is marked by a rise in the average high-temperature, moving from April's icy 35.2°F (1.8°C) to a frosty 46.2°F (7.9°C). Weather in May »Weather in June
June, the first month of the summer in Port Chilkoot, is a cool month, with an average temperature fluctuating between 38.7°F (3.7°C) and 51.4°F (10.8°C). June's onset brings an average high-temperature of a fresh 51.4°F (10.8°C), showing a minute difference from May's 46.2°F (7.9°C). Weather in June »Weather in July
July in Port Chilkoot, Alaska, is a moderate summer month, with an average temperature ranging between max 56.5°F (13.6°C) and min 43.7°F (6.5°C). July, with an average high of 56.5°F (13.6°C) and a low of 43.7°F (6.5°C), signifies the warmest month of the year. Weather in July »Weather in August
The last month of the summer, August, is another cool month in Port Chilkoot, Alaska, with an average temperature ranging between max 55°F (12.8°C) and min 44.1°F (6.7°C). Stepping into August, Port Chilkoot records an average high-temperature of a cool 55°F (12.8°C), almost consistent with July. Weather in August »Weather in September
September, the first month of the autumn in Port Chilkoot, is still a chilly month, with temperature in the range of an average high of 47.3°F (8.5°C) and an average low of 38.7°F (3.7°C). The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a cool 55°F (12.8°C) in August to a chilly 47.3°F (8.5°C). Weather in September »Weather in October
October, the same as September, is an icy autumn month in Port Chilkoot, Alaska, with an average temperature fluctuating between 31.8°F (-0.1°C) and 38.1°F (3.4°C). October brings a decrease in the average high-temperature, shifting from a frosty 47.3°F (8.5°C) in September to a wintry 38.1°F (3.4°C). Weather in October »Weather in November
The last month of the autumn, November, is another freezing cold month in Port Chilkoot, Alaska, with an average temperature varying between 19.6°F (-6.9°C) and 27°F (-2.8°C). Port Chilkoot in November undergoes a mild reduction in the average high-temperature, shifting from October's wintry 38.1°F (3.4°C) to a freezing cold 27°F (-2.8°C). Weather in November »Weather in December
December, the first month of the winter in Port Chilkoot, is still a freezing cold month, with temperature in the range of an average high of 21.9°F (-5.6°C) and an average low of 14.4°F (-9.8°C). As Port Chilkoot steps into December, the average high-temperature holds at a still freezing cold 21.9°F (-5.6°C), hinting at a minor fluctuation from the prior month. Weather in December »Updated: Jun 3, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January tends to be the coldest month, with temperatures averaging a daily high of 21.6°F (-5.8°C) and a low of 13.5°F (-10.3°C).
The most humid month is January, with an average relative humidity of 92%.
Throughout the year, in Port Chilkoot, there are 200.4 rainfall days, and 48.03" (1220mm) of precipitation is accumulated.
Months with snowfall are January through May, October through December.
Throughout the year, there are 83.4 snowfall days, and 86.57" (2199mm) of snow is accumulated.
The months with the least sunshine are January and December, with an average of 3.7h of sunshine.
February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Port Chilkoot.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
May is the least humid month, with an average relative humidity of 78%.
The month with the least rainfall is June, when the rain falls for 20 days and typically collects 2.2" (56mm) of precipitation.
June through September are months without snowfall.
The month with the longest days is June, with an average of 18h and 30min of daylight.
June has the most sunshine of the year in Port Chilkoot, with an average of 10.2h of sunshine.
July is the month when Port Chilkoot experiences its warmest temperatures, averaging a high of 56.5°F (13.6°C) and a low of 43.7°F (6.5°C).
July is the month with the highest UV index, with an average maximum UV index of 4.
November is the month with the most rainfall. Rain falls for 16.6 days and accumulates 5.87" (149mm) of precipitation.
December is the month with the most snowfall in Port Chilkoot, Alaska. Snow falls for 17.1 days and accumulates 21.06" (535mm) of snow.
December has the shortest days of the year, with an average of 6h and 18min of daylight.
Average temperature
Port Chilkoot, AK
The warmest month (with the highest average high temperature) is July (56.5°F).
The month with the lowest average high temperature is January (21.6°F).
The month with the highest average low temperature is August (44.1°F).
The coldest month (with the lowest average low temperature) is February (12.4°F).
Average pressure
Port Chilkoot, AK
- Average pressure in January:
29.87"Hg - Average pressure in February:
29.96"Hg - Average pressure in March:
29.89"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.87"Hg - Average pressure in October:
29.85"Hg - Average pressure in November:
29.81"Hg - Average pressure in December:
29.87"Hg
The month with the highest atmospheric pressure is July (30.01"Hg).
The month with the lowest atmospheric pressure is November (29.81"Hg).
Average wind speed
Port Chilkoot, AK
- Average wind speed in January:
6.7mph - Average wind speed in February:
6mph - Average wind speed in March:
6mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.7mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.6mph - Average wind speed in October:
5.7mph - Average wind speed in November:
6.2mph - Average wind speed in December:
6.3mph
The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is May (4.7mph).
Average humidity
Port Chilkoot, AK
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (78%).
Average rainfall
Port Chilkoot, AK
- Average rainfall in January:
5.51" - Average rainfall in February:
3.66" - Average rainfall in March:
3.23" - Average rainfall in April:
2.95" - Average rainfall in May:
2.28" - Average rainfall in June:
2.2"
- Average rainfall in July:
2.72" - Average rainfall in August:
4.13" - Average rainfall in September:
4.65" - Average rainfall in October:
5.35" - Average rainfall in November:
5.87" - Average rainfall in December:
5.47"
The wettest month (with the highest rainfall) is November (5.87").
The driest month (with the least rainfall) is June (2.2").
Average rainfall days
Port Chilkoot, AK
- Average rainfall days in January:
15.5 days - Average rainfall days in February:
9.3 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
18.2 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
20 days
- Average rainfall days in July:
19.3 days - Average rainfall days in August:
19.6 days - Average rainfall days in September:
19.5 days - Average rainfall days in October:
20.2 days - Average rainfall days in November:
16.6 days - Average rainfall days in December:
12.6 days
The month with the highest number of rainy days is October (20.2 days).
The month with the least rainy days is February (9.3 days).
Average snowfall
Port Chilkoot, AK
- Average snowfall in January:
18.82" - Average snowfall in February:
15.91" - Average snowfall in March:
14.21" - Average snowfall in April:
6.46" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is December (21.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Port Chilkoot, AK
- Average snowfall days in January:
14.9 days - Average snowfall days in February:
13.8 days - Average snowfall days in March:
15.8 days - Average snowfall days in April:
8 days - Average snowfall days in May:
0.5 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1.6 days - Average snowfall days in November:
11.7 days - Average snowfall days in December:
17.1 days
The month with the highest number of snowfall days is December (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Port Chilkoot, AK
- Average daylight in January:
7h and 6min - Average daylight in February:
9h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 36min - Average daylight in May:
17h and 0min - Average daylight in June:
18h and 30min
- Average daylight in July:
17h and 42min - Average daylight in August:
15h and 24min - Average daylight in September:
12h and 48min - Average daylight in October:
10h and 12min - Average daylight in November:
7h and 42min - Average daylight in December:
6h and 18min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
8h and 36min - Average sunshine in August:
7h and 0min - Average sunshine in September:
6h and 24min - Average sunshine in October:
4h and 18min - Average sunshine in November:
3h and 54min - Average sunshine in December:
3h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days
Port Chilkoot, AK
- Average sunshine days in January:
7.8 days - Average sunshine days in February:
10.4 days - Average sunshine days in March:
9.8 days - Average sunshine days in April:
6.7 days - Average sunshine days in May:
10 days - Average sunshine days in June:
6.3 days
- Average sunshine days in July:
8.1 days - Average sunshine days in August:
8.8 days - Average sunshine days in September:
8.2 days - Average sunshine days in October:
9.2 days - Average sunshine days in November:
8.1 days - Average sunshine days in December:
8.9 days
The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is June (6.3 days).
Average UV index
Port Chilkoot, AK
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover
Port Chilkoot, AK
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility
Port Chilkoot, AK
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
