April weather forecast
Coulee City, WA

Weather in April

April is a mild spring month in Coulee City, Washington, with average temperature ranging between min 37.9°F (3.3°C) and max 57°F (13.9°C).

Temperature

In Coulee City, the average high-temperature increases, from a frosty 46°F (7.8°C) in March, to a moderate 57°F (13.9°C). In April, the average low-temperature is 37.9°F (3.3°C).

Humidity

In April, the average relative humidity in Coulee City is 59%.

Rainfall

In Coulee City, in April, it is raining for 11.1 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, in Coulee City, Washington, there are 102.1 rainfall days, and 9.65" (245mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Coulee City are January through April, September through December. April is the last month it regularly snows. During 0.8 snowfall days, Coulee City aggregates 0.39" (10mm) of snow. In Coulee City, during the entire year, snow falls for 33.4 days, and aggregates up to 14.65" (372mm) of snow.

Daylight

The average length of the day in April is 13.7h.

Sunshine

In April, the average sunshine is 10.1h.

UV index

The average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Coulee City?

The average relative humidity in April is 59%.

How much does it rain in Coulee City in April?

In Coulee City, in April, it is raining for 11.1 days, with typically 0.79" (20mm) of accumulated precipitation.

What is the last month it snows in Coulee City?

April is the last month it regularly snows in Coulee City. During 0.8 snowfall days, in April, Coulee City aggregates 0.39" (10mm) of snow.

How many hours of daylight does Coulee City have in April?

In April, the average length of the day is 13.7h.

How many hours of sunshine does Coulee City have in April?

In April, the average sunshine in Coulee City is 10.1h.

What is the UV index intensity in April in Coulee City?

The average daily maximum UV index in April in Coulee City is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in April
Coulee City, WA

Average temperature in April - Coulee City, WA
  • Average high temperature in April: 57°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).

  • Average low temperature in April: 37.9°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

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Average pressure in April
Coulee City, WA

Average pressure in April - Coulee City, WA
  • Average pressure in April: 29.98"

The month with the highest atmospheric pressure is January (30.18").
The month with the lowest atmospheric pressure is August (29.91").

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Average wind speed in April
Coulee City, WA

Average wind speed in April - Coulee City, WA
  • Average wind speed in April: 7mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).

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Average humidity in April
Coulee City, WA

Average humidity in April - Coulee City, WA
  • Average humidity in April: 59%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).

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Average rainfall in April
Coulee City, WA

Average rainfall in April - Coulee City, WA
  • Average rainfall in April: 0.79"

The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").

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Average rainfall days in April
Coulee City, WA

Average rainfall days in April - Coulee City, WA
  • Average rainfall days in April: 11.1 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in April
Coulee City, WA

Average snowfall in April - Coulee City, WA
  • Average snowfall in April: 0.39"

The month with the highest snowfall is January (4.41").
Months with the least snowfall are May, June, July and August (0").

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Average snowfall days in April
Coulee City, WA

Average snowfall days in April - Coulee City, WA
  • Average snowfall days in April: 0.8 days

The month with the highest number of snowfall days is December (10.5 days).
Months with the least snowfall days are May, June, July and August (0 days).

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Average daylight in April /
Average sunshine in April
Coulee City, WA

Average daylight in April / Average sunshine in April - Coulee City, WA
  • Average daylight in April: 13.7h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in April: 10.1h

The month with the most sunshine is August (Average sunshine: 12.1h).
The month with the least sunshine is January (Average sunshine: 4.1h).

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Average sunshine days in April
Coulee City, WA

Average sunshine days in April - Coulee City, WA
  • Average sunshine days in April: 15.8 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).

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Average UV index in April
Coulee City, WA

Average UV index in April - Coulee City, WA
  • Average UV index in April: 4

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in April
Coulee City, WA

Average cloud cover in April - Coulee City, WA
  • Average cloud cover in April: 33

The month with the most cloud cover is January (Cloud cover 55).
Months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in April
Coulee City, WA

Average visibility in April - Coulee City, WA
  • Average visibility in April: 6mi

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

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