Climate and monthly weather forecastPort Heiden, AK
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Port Heiden, Alaska, with an average temperature varying between 23.4°F (-4.8°C) and 28.9°F (-1.7°C). Port Heiden witnesses the coldest weather in January, with temperatures averaging a high of 28.9°F (-1.7°C) and a low of 23.4°F (-4.8°C). Weather in January »Weather in February
February, the last month of the winter in Port Heiden, is also a subzero cold month, with an average temperature varying between 25.5°F (-3.6°C) and 31.5°F (-0.3°C). Port Heiden, Alaska, marks the start of February with an average high-temperature of a still freezing cold 31.5°F (-0.3°C), hinting at a slight fluctuation from January's 28.9°F (-1.7°C). Weather in February »Weather in March
The first month of the spring, March, is also a subzero cold month in Port Heiden, Alaska, with temperature in the range of an average high of 30.4°F (-0.9°C) and an average low of 23.4°F (-4.8°C). Port Heiden's shift from February to March is accompanied by an average high-temperature of a still subzero cold 30.4°F (-0.9°C), a slight deviation from 31.5°F (-0.3°C). Weather in March »Weather in April
April in Port Heiden, Alaska, is an icy spring month, with an average temperature ranging between max 37.8°F (3.2°C) and min 30.9°F (-0.6°C). The start of April brings a subtle shift in the average high-temperature, edging up from March's subzero cold 30.4°F (-0.9°C) to a cold 37.8°F (3.2°C). Weather in April »Weather in May
May, the last month of the spring in Port Heiden, is a frosty month, with temperature in the range of an average high of 46°F (7.8°C) and an average low of 37.9°F (3.3°C). The beginning of May signals a minor rise in the average high-temperature, moving from an icy 37.8°F (3.2°C) in April to a chilly 46°F (7.8°C). Weather in May »Weather in June
The first month of the summer, June, is a fresh month in Port Heiden, Alaska, with an average temperature ranging between min 44.1°F (6.7°C) and max 52.2°F (11.2°C). June introduces a minor temperature shift, with average high-temperatures adjusting from May's frosty 46°F (7.8°C) to a cool 52.2°F (11.2°C). Weather in June »Weather in July
July is a moderate summer month in Port Heiden, Alaska, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 48.2°F (9°C). Upon the onset of July, Port Heiden witnesses an average high-temperature of a refreshing 55.9°F (13.3°C), showing a close resemblance to the prior month. Weather in July »Weather in August
The last month of the summer, August, is another mild month in Port Heiden, Alaska, with an average temperature ranging between max 56.8°F (13.8°C) and min 49.1°F (9.5°C). The warmest time of the year is August, with temperatures averaging a high of 56.8°F (13.8°C) and a low of 49.1°F (9.5°C). Weather in August »Weather in September
September, the first month of the autumn in Port Heiden, is also a fresh month, with an average temperature fluctuating between 52.3°F (11.3°C) and 45.3°F (7.4°C). The average high-temperature during September registers at a fresh 52.3°F (11.3°C), closely corresponding to the preceding month. Weather in September »Weather in October
October, like September, is another chilly autumn month in Port Heiden, Alaska, with temperature in the range of an average high of 44.8°F (7.1°C) and an average low of 39.9°F (4.4°C). The transition into October is accompanied by a slight temperature decrease, with the average high-temperature shifting from a cool 52.3°F (11.3°C) in September to a chilly 44.8°F (7.1°C). Weather in October »Weather in November
November, the last month of the autumn in Port Heiden, is also a wintry month, with an average temperature varying between 31.8°F (-0.1°C) and 36.7°F (2.6°C). November's arrival aligns with a minor decrease in average high-temperatures, from October's chilly 44.8°F (7.1°C) to an icy 36.7°F (2.6°C). Weather in November »Weather in December
December, the first month of the winter in Port Heiden, is also a wintry month, with an average temperature varying between 32.4°F (0.2°C) and 27.5°F (-2.5°C). December's arrival brings an average high-temperature of a still icy 32.4°F (0.2°C), demonstrating subtle variation from the preceding month. Weather in December »Updated: Jun 17, 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
Port Heiden reaches its average lowest temperatures in January, measuring 28.9°F (-1.7°C) at the peak and 23.4°F (-4.8°C) at the lowest.
January is the most humid month, with an average relative humidity of 88%.
In Port Heiden, during the entire year, the rain falls for 160.7 days and collects up to 16.57" (421mm) of precipitation.
January through May, September through December are months with snowfall.
In Port Heiden, during the entire year, snow falls for 83.4 days and aggregates up to 23.94" (608mm) of snow.
February, March, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
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 in Port Heiden, with an average relative humidity of 78%.
The month with the most sunshine is May, with an average of 7.7h of sunshine.
May through September, with an average maximum UV index of 3, are months with the highest UV index in Port Heiden.
The month with the least rainfall is June, when the rain falls for 14 days and typically collects 0.83" (21mm) of precipitation.
In Port Heiden, snow does not fall in June through August.
With an average of 17h and 48min of daylight, June has the longest days of the year.
August is the warmest month, with the temperature often reaching an average high of 56.8°F (13.8°C) and an average low of 49.1°F (9.5°C).
The month with the most rainfall is October, when the rain falls for 17.4 days and typically aggregates up to 2.17" (55mm) of precipitation.
The month with the most snowfall is December, when snow falls for 15.1 days and typically aggregates up to 5.71" (145mm) of snow.
The month with the shortest days is December, with an average of 6h and 54min of daylight.
December has the least sunshine of the year, with an average of 2.4h of sunshine.
Average temperature
Port Heiden, AK
The warmest month (with the highest average high temperature) is August (56.8°F).
The month with the lowest average high temperature is January (28.9°F).
The month with the highest average low temperature is August (49.1°F).
The coldest months (with the lowest average low temperature) are January and March (23.4°F).
Average pressure
Port Heiden, AK
- Average pressure in January:
29.56"Hg - Average pressure in February:
29.71"Hg - Average pressure in March:
29.75"Hg - Average pressure in April:
29.74"Hg - Average pressure in May:
29.86"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.87"Hg - Average pressure in September:
29.72"Hg - Average pressure in October:
29.61"Hg - Average pressure in November:
29.63"Hg - Average pressure in December:
29.54"Hg
The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is December (29.54"Hg).
Average wind speed
Port Heiden, AK
- Average wind speed in January:
13.2mph - Average wind speed in February:
13.7mph - Average wind speed in March:
12.1mph - Average wind speed in April:
11.6mph - Average wind speed in May:
10.6mph - Average wind speed in June:
9.6mph
- Average wind speed in July:
9.1mph - Average wind speed in August:
10.7mph - Average wind speed in September:
12.6mph - Average wind speed in October:
13.7mph - Average wind speed in November:
14.5mph - Average wind speed in December:
14.8mph
The windiest month (with the highest average wind speed) is December (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity
Port Heiden, AK
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).
Average rainfall
Port Heiden, AK
- Average rainfall in January:
1.14" - Average rainfall in February:
1.14" - Average rainfall in March:
1.14" - Average rainfall in April:
0.94" - Average rainfall in May:
0.87" - Average rainfall in June:
0.83"
- Average rainfall in July:
1.22" - Average rainfall in August:
1.46" - Average rainfall in September:
1.73" - Average rainfall in October:
2.17" - Average rainfall in November:
1.93" - Average rainfall in December:
2.01"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is June (0.83").
Average rainfall days
Port Heiden, AK
- Average rainfall days in January:
10.2 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
7.6 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
13.7 days - Average rainfall days in June:
14 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
17.5 days - Average rainfall days in September:
19.2 days - Average rainfall days in October:
17.4 days - Average rainfall days in November:
12.4 days - Average rainfall days in December:
11.2 days
The month with the highest number of rainy days is September (19.2 days).
The month with the least rainy days is March (7.6 days).
Average snowfall
Port Heiden, AK
- Average snowfall in January:
3.78" - Average snowfall in February:
3.03" - Average snowfall in March:
4.21" - Average snowfall in April:
2.28" - Average snowfall in May:
0.55" - Average snowfall in June:
0"
The month with the highest snowfall is December (5.71").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Port Heiden, AK
- Average snowfall days in January:
14.5 days - Average snowfall days in February:
12.8 days - Average snowfall days in March:
13.9 days - Average snowfall days in April:
9.2 days - Average snowfall days in May:
3.2 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:
0.3 days - Average snowfall days in October:
3.9 days - Average snowfall days in November:
10.5 days - Average snowfall days in December:
15.1 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Port Heiden, AK
- Average daylight in January:
7h and 36min - Average daylight in February:
9h and 36min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 24min - Average daylight in May:
16h and 36min - Average daylight in June:
17h and 48min
- Average daylight in July:
17h and 6min - Average daylight in August:
15h and 6min - Average daylight in September:
12h and 42min - Average daylight in October:
10h and 18min - Average daylight in November:
8h and 6min - Average daylight in December:
6h and 54min
The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in January:
2h and 30min - Average sunshine in February:
3h and 48min - Average sunshine in March:
4h and 30min - Average sunshine in April:
5h and 24min - Average sunshine in May:
7h and 42min - Average sunshine in June:
7h and 30min
- Average sunshine in July:
6h and 6min - Average sunshine in August:
5h and 36min - Average sunshine in September:
4h and 36min - Average sunshine in October:
4h and 30min - Average sunshine in November:
2h and 36min - Average sunshine in December:
2h and 24min
The month with the most sunshine is May (Average sunshine: 7h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days
Port Heiden, AK
- Average sunshine days in January:
9.3 days - Average sunshine days in February:
6.6 days - Average sunshine days in March:
9.8 days - Average sunshine days in April:
9 days - Average sunshine days in May:
13 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
10 days - Average sunshine days in September:
7.5 days - Average sunshine days in October:
7.7 days - Average sunshine days in November:
6 days - Average sunshine days in December:
6.7 days
The month with the most sunshine days is May (13 days).
The month with the least sunshine days is November (6 days).
Average UV index
Port Heiden, AK
The months with the highest UV index are May, June, July, August and September (UV index 3).
The months with the lowest UV index are February, March, November and December (UV index 1).
Average cloud cover
Port Heiden, AK
The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 59).
Average visibility
Port Heiden, AK
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
