April weather forecastYelm, WA
April
Weather in April
April is a mild spring month in Yelm, Washington, with an average temperature ranging between min 37.8°F (3.2°C) and max 56.3°F (13.5°C).Temperature
Yelm's transition into April is noticed by a slight rise in the average high-temperature, advancing from a cool 50.7°F (10.4°C) in March to a mild 56.3°F (13.5°C). In Yelm, the average temperature during the nights of April drops to a wintry 37.8°F (3.2°C).Humidity
In Yelm, the average relative humidity in April is 81%.Rainfall
In Yelm, in April, during 18.8 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, there are 178.1 rainfall days, and 33.82" (859mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.3 snowfall days, in April, Yelm aggregates 0.04" (1mm) of snow. In Yelm, Washington, during the entire year, snow falls for 9 days and aggregates up to 6.38" (162mm) of snow.Daylight
The average length of the day in April is 13h and 38min.On the first day of April, sunrise is at 6:47 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:20 pm PDT.
Sunshine
In Yelm, the average sunshine in April is 7.4h.UV index
The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 3 during April translates into the following guidance:
Exercise prevention - Warding off sunburn is urged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Yelm, WA
- Average high temperature in April: 56.3°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 (43°F).
- Average low temperature in April: 37.8°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in April
Yelm, 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
Yelm, WA
- Average wind speed in April: 4.5mph
The windiest month (with the highest average wind speed) is January (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in April
Yelm, WA
- Average humidity in April: 81%
The months with the highest relative humidity are January, February, November and December (87%).
The month with the lowest relative humidity is July (70%).
Average rainfall in April
Yelm, WA
- Average rainfall in April: 2.8"
The wettest month (with the highest rainfall) is December (5.28").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in April
Yelm, WA
- Average rainfall days in April: 18.8 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in April
Yelm, WA
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Yelm, WA
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (3.2 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
Yelm, 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: 7h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in April
Yelm, WA
- Average sunshine days in April: 9.3 days
The month with the most sunshine days is August (23.4 days).
The months with the least sunshine days are February and March (8.8 days).
Average UV index in April
Yelm, WA
- Average UV index in April: 3
The months with the highest UV index are June and 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
Yelm, WA
- Average cloud cover in April: 55
The months with the most cloud cover are January, February, March and December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in April
Yelm, WA
- Average visibility in April: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
