April weather forecastOnalaska, WA
April
Weather in April
April is a mild spring month in Onalaska, Washington, with temperature in the range of an average high of 55.4°F (13°C) and an average low of 36.3°F (2.4°C).Temperature
With the onset of April, Onalaska's average high-temperature sees a modest rise, moving from March's chilly 49.8°F (9.9°C) to a mild 55.4°F (13°C). Throughout April, Onalaska experiences a low-temperature average of 36.3°F (2.4°C).Humidity
In April, the average relative humidity in Onalaska, Washington, is 83%.Rainfall
In Onalaska, in April, during 18.2 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In Onalaska, during the entire year, the rain falls for 170.1 days and collects up to 22.56" (573mm) of precipitation.Snowfall
In Onalaska, snow does not fall in April through October.Daylight
In April, the average length of the day is 13h and 37min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:40 pm. On the last day of April, in Onalaska, sunrise is at 5:56 am and sunset at 8:19 pm PDT.
Sunshine
The average sunshine in April in Onalaska is 6.5h.UV index
The average daily maximum UV index in April in Onalaska is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 3 during April, leads to the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. 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
Onalaska, WA
- Average high temperature in April: 55.4°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in April: 36.3°F
The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (32.4°F).
Average pressure in April
Onalaska, WA
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in April
Onalaska, WA
- Average wind speed in April: 4.2mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest months (with the lowest average wind speed) are August and September (3.5mph).
Average humidity in April
Onalaska, WA
- Average humidity in April: 83%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (73%).
Average rainfall in April
Onalaska, WA
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is January (3.54").
The driest months (with the least rainfall) are July and August (0.39").
Average rainfall days in April
Onalaska, WA
- Average rainfall days in April: 18.2 days
The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in April
Onalaska, WA
- Average snowfall in April: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Onalaska, WA
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (3.4 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
Onalaska, WA
- Average daylight in April: 13h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in April: 6h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 42min).
Average sunshine days in April
Onalaska, WA
- Average sunshine days in April: 9.5 days
The month with the most sunshine days is August (22.1 days).
The month with the least sunshine days is February (9 days).
Average UV index in April
Onalaska, WA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Onalaska, WA
- Average cloud cover in April: 60
The months with the most cloud cover are February and March (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in April
Onalaska, WA
- Average visibility in April: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
