Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
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). Saint John Harbor, during April nights, experiences a subtle shift to a low average of 34.3°F (1.3°C) from the day's heat.Humidity
The average relative humidity in April in Saint John Harbor is 83%.Rainfall
In Saint John Harbor, Alaska, during April, the rain falls for 18.1 days and regularly aggregates up to 3.54" (90mm) of precipitation. In Saint John Harbor, during the entire year, the rain falls for 197.9 days and collects up to 53.03" (1347mm) of precipitation.Snowfall
Months with snowfall in Saint John Harbor are January through May, October through December. In Saint John Harbor, in April, during 3.8 snowfall days, 2.6" (66mm) of snow is typically accumulated. Throughout the year, in Saint John Harbor, Alaska, there are 47.5 snowfall days, and 58.23" (1479mm) of snow is accumulated.Daylight
In Saint John Harbor, the average length of the day in April is 14h and 18min.On the first day of April in Saint John Harbor, sunrise is at 6:18 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 5:05 am and sunset at 8:32 pm AKDT.
Sunshine
In Saint John Harbor, Alaska, the average sunshine in April is 6.7h.UV index
In April, the average daily maximum UV index in Saint John Harbor, Alaska, is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 2 in April transforms into this advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
How cold is April in Saint John Harbor?
What is the average humidity in April in Saint John Harbor?
How much does it rain in Saint John Harbor in April?
How many days does it snow in April in Saint John Harbor?
How many hours of daylight does Saint John Harbor have in April?
When are sunrise and sunset in April in Saint John Harbor?
How many hours of sunshine does Saint John Harbor have in April?
How high is the UV index in April in Saint John Harbor?
Average temperature in April
Saint John Harbor, AK
- Average high temperature in April: 43.3°F
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).
- Average low temperature in April: 34.3°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).
Average pressure in April
Saint John Harbor, AK
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).
Average wind speed in April
Saint John Harbor, AK
- Average wind speed in April: 5.7mph
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).
Average humidity in April
Saint John Harbor, AK
- Average humidity in April: 83%
The months with the highest relative humidity are January and August (86%).
The month with the lowest relative humidity is May (81%).
Average rainfall in April
Saint John Harbor, AK
- Average rainfall in April: 3.54"
The wettest month (with the highest rainfall) is October (6.3").
The driest month (with the least rainfall) is May (2.01").
Average rainfall days in April
Saint John Harbor, AK
- Average rainfall days in April: 18.1 days
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).
Average snowfall in April
Saint John Harbor, AK
- Average snowfall in April: 2.6"
The month with the highest snowfall is March (13.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Saint John Harbor, AK
- Average snowfall days in April: 3.8 days
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).
Average daylight in April /
Average sunshine in April
Saint John Harbor, AK
- Average daylight in April: 14h and 2min
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).
- Average sunshine in April: 6h and 4min
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).
Average sunshine days in April
Saint John Harbor, AK
- Average sunshine days in April: 9.1 days
The month with the most sunshine days is December (12.5 days).
The month with the least sunshine days is November (8 days).
Average UV index in April
Saint John Harbor, AK
- Average UV index in April: 2
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).
Average cloud cover in April
Saint John Harbor, AK
- Average cloud cover in April: 58
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are February and May (Cloud cover 54).
Average visibility in April
Saint John Harbor, AK
- Average visibility in April: 6mi
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).
Saint John Harbor, Alaska, USA
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