Olympia
Washington, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Olympia, WA

The calm Capitol Lake overlooking the Washington State Capitol building in Olympia, Washington
The calm Capitol Lake overlooking the Washington State Capitol building in Olympia, Washington
April in Olympia, Washington, is a mild spring month, with temperature in the range of an average low of 37.8°F (3.2°C) and an average high of 58.8°F (14.9°C).

Temperature

In Olympia, the average high-temperature is practically the same as in March - a moderate 58.8°F (14.9°C). In Olympia, the average low-temperature is 37.8°F (3.2°C).

Humidity

In Olympia, the average relative humidity is 75.6%.

Rainfall

In Olympia, Washington, during 15.7 rainfall days, 3.5" (89.9mm) of precipitation is typically accumulated. Throughout the year, in Olympia, there are 162.8 rainfall days, and 50" (1270mm) of precipitation is accumulated.

Snowfall

In April, in Olympia, it doesn't snow. March is the latest month when it typically snows. In Olympia, during the entire year, snow falls for 6.3 days, and aggregates up to 10.8" (274.4mm) of snow.

Daylight

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

Sunshine

In April, the average sunshine is 7h.

UV index

In April, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the temperature in April in Olympia?

In Olympia, Washington, in April, the average high-temperature is 58.8°F (14.9°C), and the average low-temperature is 37.8°F (3.2°C).

What is the average humidity in April in Olympia?

The average relative humidity in April in Olympia, Washington, is 75.6%.

How much does it rain in Olympia in April?

In Olympia, Washington, during April, the rain falls for 15.7 days and regularly aggregates up to 3.5" (89.9mm) of precipitation.

Does it snow in Olympia in April?

In April, it doesn't snow. March is the latest month when it typically snows.

How many hours of daylight does Olympia have in April?

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

How long on average sun shines in April in Olympia?

In Olympia, Washington, the average sunshine in April is 7h.

What is the UV index reading in April in Olympia?

The average daily maximum UV index in April in Olympia is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in April - Olympia, WA
  • Average high temperature in April: 58.9°F

The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (44.2°F).

  • Average low temperature in April: 37.7°F

The month with the highest average low temperature is July (50.8°F).
The coldest month (with the lowest average low temperature) is December (32.6°F).

Average humidity in April - Olympia, WA
  • Average humidity in April: 75.6%

The month with the highest relative humidity is December (89.1%).
The month with the lowest relative humidity is July (70.8%).

Average rainfall in April - Olympia, WA
  • Average rainfall in April: 3.5"

The wettest month (with the highest rainfall) is November (8.6").
The driest month (with the lowest rainfall) is July (0.6").

Average rainfall days in April - Olympia, WA
  • Average rainfall days in April: 15.7 days

The month with the highest number of rainy days is November (20.1 days).
The month with the lowest number of rainy days is July (4.6 days).

Average snowfall in April - Olympia, WA
  • Average snowfall in April: 0"

The month with the highest snowfall is February (4.7").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in April - Olympia, WA
  • Average snowfall days in April: 0.2 days

The month with the highest number of snowfall days is February (2.2 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

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

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in April: 7h

The month with most sunshine is July (Average sunshine: 10h).
Months with least sunshine are January and December (Average sunshine: 2).

Average UV index in April - Olympia, WA
  • Average UV index in April: 5

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).