April weather forecastChiwaukum, WA
April
Weather in April
April in Chiwaukum, Washington, is a chilly spring month, with an average temperature varying between 30°F (-1.1°C) and 47.8°F (8.8°C).Temperature
Chiwaukum's transition into April brings a slight rise in the average high-temperature, moving from a wintry 39.2°F (4°C) in March to a frosty 47.8°F (8.8°C). In April, Chiwaukum experiences a temperature dip to an average of 30°F (-1.1°C) at night.Humidity
In Chiwaukum, the average relative humidity in April is 77%.Rainfall
In Chiwaukum, during April, the rain falls for 17.7 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Chiwaukum, during the entire year, the rain falls for 159.9 days and collects up to 25.63" (651mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Chiwaukum, in April, during 5.2 snowfall days, 1.54" (39mm) of snow is typically accumulated. In Chiwaukum, during the entire year, snow falls for 73.4 days and aggregates up to 57.99" (1473mm) of snow.Daylight
In April, the average length of the day is 13h and 41min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:33 pm. On the last day of April, sunrise is at 5:45 am and sunset at 8:14 pm PDT.
Sunshine
The average sunshine in April is 9.8h.UV index
In Chiwaukum, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 3 in April leads to these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Chiwaukum, WA
- Average high temperature in April: 47.8°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (30.6°F).
- Average low temperature in April: 30°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in April
Chiwaukum, WA
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in April
Chiwaukum, WA
- Average wind speed in April: 5mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in April
Chiwaukum, WA
- Average humidity in April: 77%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (56%).
Average rainfall in April
Chiwaukum, WA
- Average rainfall in April: 1.65"
The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in April
Chiwaukum, WA
- Average rainfall days in April: 17.7 days
The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in April
Chiwaukum, WA
- Average snowfall in April: 1.54"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Chiwaukum, WA
- Average snowfall days in April: 5.2 days
The month with the highest number of snowfall days is December (17 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Chiwaukum, WA
- Average daylight in April: 13h and 42min
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: 9h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Chiwaukum, WA
- Average sunshine days in April: 8.5 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in April
Chiwaukum, WA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in April
Chiwaukum, WA
- Average cloud cover in April: 41
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in April
Chiwaukum, WA
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
