April weather forecast
John Sam Lake, WA

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Weather in April

April is a fresh spring month in John Sam Lake, Washington, with an average temperature ranging between min 40.3°F (4.6°C) and max 54.3°F (12.4°C).

Temperature

John Sam Lake's weather in April shows a minor rise in the average high-temperature, moving slightly up from March's frosty 48.9°F (9.4°C) to a cool 54.3°F (12.4°C). During April, John Sam Lake experiences an average low-temperature of 40.3°F (4.6°C) at night.

Humidity

The average relative humidity in April is 80%.

Rainfall

In John Sam Lake, during April, the rain falls for 18.3 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, there are 179.1 rainfall days, and 29.57" (751mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.2 snowfall days, in April, John Sam Lake aggregates 0.04" (1mm) of snow. In John Sam Lake, Washington, during the entire year, snow falls for 8.9 days and aggregates up to 6.1" (155mm) of snow.

Daylight

In John Sam Lake, the average length of the day in April is 13h and 42min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:40 pm. On the last day of April, sunrise is at 5:50 am and sunset at 8:21 pm PDT.

Sunshine

The average sunshine in April in John Sam Lake is 7.8h.

UV index

In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average UV index of 3 in April transforms into this advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the temperature in April in John Sam Lake?

The high-temperature, in April, in John Sam Lake, records 54.3°F (12.4°C), while the low-temperature is 40.3°F (4.6°C).

What is the average humidity in April in John Sam Lake?

The average relative humidity in April is 80%.

How much does it rain in John Sam Lake in April?

In John Sam Lake, Washington, in April, it is raining for 18.3 days, with typically 2.64" (67mm) of accumulated precipitation.

What is the last month it snows in John Sam Lake?

April is the last month it regularly snows in John Sam Lake, Washington. During 0.2 snowfall days, in April, John Sam Lake aggregates 0.04" (1mm) of snow.

How many hours of daylight does John Sam Lake have in April?

The average day length in April is 13h and 42min.

What time are sunrise and sunset in April in John Sam Lake?

In April, on the first day of the month, sunrise is at 6:45 am and sunset at 7:40 pm. On the last day of the month, in John Sam Lake, sunrise is at 5:50 am and sunset at 8:21 pm PDT.

How many hours of sunshine does John Sam Lake have in April?

In John Sam Lake, the average sunshine duration in April is 7.8h.

What is the UV index reading in April in John Sam Lake?

The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
John Sam Lake, WA

Average temperature in April - John Sam Lake, WA
  • Average high temperature in April: 54.3°F

The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (42.3°F).

  • Average low temperature in April: 40.3°F

The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).

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Average pressure in April
John Sam Lake, WA

Average pressure in April - John Sam Lake, WA
  • Average pressure in April: 30.04"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in April
John Sam Lake, WA

Average wind speed in April - John Sam Lake, WA
  • Average wind speed in April: 5mph

The windiest months (with the highest average wind speed) are March and November (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in April
John Sam Lake, WA

Average humidity in April - John Sam Lake, WA
  • Average humidity in April: 80%

The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (73%).

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Average rainfall in April
John Sam Lake, WA

Average rainfall in April - John Sam Lake, WA
  • Average rainfall in April: 2.64"

The wettest month (with the highest rainfall) is November (4.06").
The driest month (with the least rainfall) is July (0.47").

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Average rainfall days in April
John Sam Lake, WA

Average rainfall days in April - John Sam Lake, WA
  • Average rainfall days in April: 18.3 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in April
John Sam Lake, WA

Average snowfall in April - John Sam Lake, WA
  • Average snowfall in April: 0.04"

The month with the highest snowfall is February (2.68").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in April
John Sam Lake, WA

Average snowfall days in April - John Sam Lake, WA
  • Average snowfall days in April: 0.2 days

The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
John Sam Lake, WA

Average daylight in April / Average sunshine in April - John Sam Lake, WA
  • Average daylight in April: 13h and 4min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in April: 7h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).

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Average sunshine days in April
John Sam Lake, WA

Average sunshine days in April - John Sam Lake, WA
  • Average sunshine days in April: 9.2 days

The month with the most sunshine days is August (23.1 days).
The months with the least sunshine days are February and November (8.6 days).

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Average UV index in April
John Sam Lake, WA

Average UV index in April - John Sam Lake, WA
  • Average UV index in April: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
John Sam Lake, WA

Average cloud cover in April - John Sam Lake, WA
  • Average cloud cover in April: 51

The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in April
John Sam Lake, WA

Average visibility in April - John Sam Lake, WA
  • Average visibility in April: 6mi

The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).

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John Sam Lake, Washington, USA

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