April weather forecastPort Heiden, AK
April
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).Temperature
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). During April, the nighttime temperatures align closely with the daytime averages, measuring a subzero cold 30.9°F (-0.6°C).Humidity
The average relative humidity in April is 82%.Rainfall
In Port Heiden, during April, the rain falls for 11.1 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 160.7 rainfall days, and 16.57" (421mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Port Heiden, during April, snow falls for 9.2 days and regularly aggregates up to 2.28" (58mm) of snow. In Port Heiden, during the entire year, snow falls for 83.4 days and aggregates up to 23.94" (608mm) of snow.Daylight
In Port Heiden, the average length of the day in April is 14h and 21min.On the first day of April, sunrise is at 8:00 am and sunset at 9:15 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 10:17 pm AKDT.
Sunshine
In Port Heiden, the average sunshine in April is 5.4h.UV index
The average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 2 in April suggests the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Port Heiden, AK
- Average high temperature in April: 37.8°F
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).
- Average low temperature in April: 30.9°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 in April
Port Heiden, AK
- Average pressure in April: 29.74"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 in April
Port Heiden, AK
- Average wind speed in April: 11.6mph
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 in April
Port Heiden, AK
- Average humidity in April: 82%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).
Average rainfall in April
Port Heiden, AK
- Average rainfall in April: 0.94"
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 in April
Port Heiden, AK
- Average rainfall days in April: 11.1 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 in April
Port Heiden, AK
- Average snowfall in April: 2.28"
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 in April
Port Heiden, AK
- Average snowfall days in April: 9.2 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 in April /
Average sunshine in April
Port Heiden, AK
- Average daylight in April: 14h and 24min
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 April: 5h 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 in April
Port Heiden, AK
- Average sunshine days in April: 9 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 in April
Port Heiden, AK
- Average UV index in April: 2
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 in April
Port Heiden, AK
- Average cloud cover in April: 63
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 in April
Port Heiden, AK
- Average visibility in April: 6mi
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).
