April weather forecast
South Colby, WA

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Weather in April

April is a refreshing spring month in South Colby, Washington, with temperature in the range of an average low of 39.9°F (4.4°C) and an average high of 56.7°F (13.7°C).

Temperature

With the onset of April, the average high-temperature subtly transitions from a fresh 50.9°F (10.5°C) in March to a moderate 56.7°F (13.7°C). South Colby in April anticipates an average nighttime temperature of 39.9°F (4.4°C).

Humidity

The average relative humidity in April in South Colby is 79%.

Rainfall

In April, the rain falls for 13.3 days. Throughout April, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 138.9 rainfall days, and 12.24" (311mm) of precipitation is accumulated.

Snowfall

In South Colby, snow does not fall in April through October.

Daylight

The average length of the day in April is 13h and 40min.
On the first day of the month, sunrise is at 6:46 am and sunset at 7:40 pm. On the last day of April, sunrise is at 5:53 am and sunset at 8:21 pm PDT.

Sunshine

In South Colby, the average sunshine in April is 8.1h.

UV index

In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 4 in April leads to these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in April?

In April, in South Colby, the average high-temperature is 56.7°F (13.7°C), and the average low-temperature is 39.9°F (4.4°C).

What is the average humidity in April?

In South Colby, the average relative humidity in April is 79%.

How many days does it rain in April in South Colby?

In South Colby, in April, during 13.3 rainfall days, 0.79" (20mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

Does it snow in April?

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

What is the average length of the day in April?

In April, the average day length is 13h and 40min.

What time are sunrise and sunset in April?

On the first day of April, sunrise is at 6:46 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:21 pm PDT.

How long on average sun shines in April?

In April, the average sunshine duration is 8.1h.

What is the UV index reading in April?

In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
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
South Colby, WA

Average temperature in April - South Colby, WA
  • Average high temperature in April: 56.7°F

The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).

  • Average low temperature in April: 39.9°F

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).

Average pressure in April
South Colby, WA

Average pressure in April - South Colby, WA
  • Average pressure in April: 30.05"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

Average wind speed in April
South Colby, WA

Average wind speed in April - South Colby, WA
  • Average wind speed in April: 5mph

The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).

Average humidity in April
South Colby, WA

Average humidity in April - South Colby, WA
  • Average humidity in April: 79%

The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).

Average rainfall in April
South Colby, WA

Average rainfall in April - South Colby, WA
  • Average rainfall in April: 0.79"

The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").

Average rainfall days in April
South Colby, WA

Average rainfall days in April - South Colby, WA
  • Average rainfall days in April: 13.3 days

The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).

Average snowfall in April
South Colby, WA

Average snowfall in April - South Colby, WA
  • Average snowfall in April: 0"

The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in April
South Colby, WA

Average snowfall days in April - South Colby, WA
  • Average snowfall days in April: 0.1 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in April /
Average sunshine in April
South Colby, WA

Average daylight in April / Average sunshine in April - South Colby, WA
  • Average daylight in April: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in April: 8h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

Average sunshine days in April
South Colby, WA

Average sunshine days in April - South Colby, WA
  • Average sunshine days in April: 13.8 days

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).

Average UV index in April
South Colby, WA

Average UV index in April - South Colby, WA
  • Average UV index in April: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in April
South Colby, WA

Average cloud cover in April - South Colby, WA
  • Average cloud cover in April: 50

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in April
South Colby, WA

Average visibility in April - South Colby, WA
  • Average visibility in April: 5mi

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

South Colby, Washington, USA

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