April weather forecast and climate
Sterling, AK

Weather in April

April in Sterling, Alaska, is a cold spring month, with average temperature varying between 29.3°F (-1.5°C) and 42.1°F (5.6°C).

Temperature

In April, the average high-temperature increases, from a subzero cold 30.6°F (-0.8°C) in March, to a cold 42.1°F (5.6°C). The average low-temperature, in April, is 29.3°F (-1.5°C).

Humidity

In Sterling, the average relative humidity is 80%.

Rainfall

In Sterling, in April, it is raining for 12.1 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Sterling, there are 135.9 rainfall days, and 12.4" (315mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Sterling. In April, in Sterling, it is snowing for 6.3 days. Throughout April, 1.57" (40mm) of snow is accumulated. In Sterling, Alaska, during the entire year, snow falls for 65.1 days, and aggregates up to 23.27" (591mm) of snow.

Daylight

In Sterling, the average length of the day in April is 14.7h.

Sunshine

The average sunshine in April is 7.2h.

UV index

In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in April in Sterling?

In April, the average high-temperature is 42.1°F (5.6°C), and the average low-temperature is 29.3°F (-1.5°C).

What is the average humidity in April in Sterling?

The average relative humidity in April in Sterling is 80%.

How much does it rain in Sterling in April?

In Sterling, in April, it is raining for 12.1 days, with typically 0.75" (19mm) of accumulated precipitation.

How many days does it snow in April in Sterling?

In Sterling, during April, snow falls for 6.3 days and regularly aggregates up to 1.57" (40mm) of snow.

What is the average length of the day in April in Sterling?

In April, the average length of the day in Sterling is 14.7h.

How long on average sun shines in April in Sterling?

In Sterling, the average sunshine in April is 7.2h.

What is the UV index intensity in April in Sterling?

In Sterling, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in April
Sterling, AK

Average temperature in April - Sterling, AK
  • Average high temperature in April: 42.1°F

The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is January (21.9°F).

  • Average low temperature in April: 29.3°F

The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in April
Sterling, AK

Average pressure in April - Sterling, AK
  • Average pressure in April: 29.81"

The month with the highest atmospheric pressure is July (29.96").
Months with the lowest atmospheric pressure are November and December (29.64").

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Average wind speed in April
Sterling, AK

Average wind speed in April - Sterling, AK
  • Average wind speed in April: 5mph

The windiest months (with the highest average wind speed) are November and December (6mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

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Average humidity in April
Sterling, AK

Average humidity in April - Sterling, AK
  • Average humidity in April: 80%

Months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (64%).

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Average rainfall in April
Sterling, AK

Average rainfall in April - Sterling, AK
  • Average rainfall in April: 0.75"

The wettest month (with the highest rainfall) is October (1.77").
The driest month (with the least rainfall) is May (0.55").

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Average rainfall days in April
Sterling, AK

Average rainfall days in April - Sterling, AK
  • Average rainfall days in April: 12.1 days

The month with the highest number of rainy days is September (17.3 days).
The month with the least rainy days is February (6.3 days).

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Average snowfall in April
Sterling, AK

Average snowfall in April - Sterling, AK
  • Average snowfall in April: 1.57"

The month with the highest snowfall is February (5.31").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Sterling, AK

Average snowfall days in April - Sterling, AK
  • Average snowfall days in April: 6.3 days

The month with the highest number of snowfall days is December (13.1 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in April /
Average sunshine in April
Sterling, AK

Average daylight in April / Average sunshine in April - Sterling, AK
  • Average daylight in April: 14.7h

The month with the longest days is June (Average daylight: 18.9h).
The month with the shortest days is December (Average daylight: 5.9h).

  • Average sunshine in April: 7.2h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 3.3h).

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Average sunshine days in April
Sterling, AK

Average sunshine days in April - Sterling, AK
  • Average sunshine days in April: 12.8 days

The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is September (11 days).

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Average UV index in April
Sterling, AK

Average UV index in April - Sterling, AK
  • Average UV index in April: 3

Months with the highest UV index are June and July (UV index 4).
Months with the lowest UV index are February and November (UV index 1).

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Average cloud cover in April
Sterling, AK

Average cloud cover in April - Sterling, AK
  • Average cloud cover in April: 51

The month with the most cloud cover is December (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 45).

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Average visibility in April
Sterling, AK

Average visibility in April - Sterling, AK
  • Average visibility in April: 5mi

Months with the highest visibility are May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February and March (4mi).

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