Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The arrival of April witnesses a small shift in the average high-temperature, moving from a fresh 50.2°F (10.1°C) in March to a refreshing 56.1°F (13.4°C). The temperature notes a substantial fall from the daily peak to an average of 34.5°F (1.4°C) during April nights.Humidity
In Williams, the average relative humidity in April is 78%.Rainfall
In Williams, in April, it is raining for 10.8 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 92.5 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Williams. In April, it is snowing for 2.8 days. Throughout April, 0.87" (22mm) of snow is accumulated. Throughout the year, in Williams, there are 31 snowfall days, and 23.39" (594mm) of snow is accumulated.Daylight
In Williams, Oregon, the average length of the day in April is 13h and 24min.On the first day of April, sunrise is at 6:53 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:11 pm PDT.
Sunshine
In April, the average sunshine is 8.7h.UV index
The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 3 in April suggests the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Williams in April?
What is the average humidity in April?
How much does it rain in Williams in April?
How much does it snow in Williams in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
How high is the UV index in April in Williams?
Average temperature in April
Williams, OR
- Average high temperature in April: 56.1°F
The warmest month (with the highest average high temperature) is August (84.4°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in April: 34.5°F
The months with the highest average low temperature are July and August (49.5°F).
The coldest month (with the lowest average low temperature) is December (28.9°F).
Average pressure in April
Williams, OR
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in April
Williams, OR
- Average wind speed in April: 4.1mph
The windiest month (with the highest average wind speed) is March (4.3mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in April
Williams, OR
- Average humidity in April: 78%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is August (60%).
Average rainfall in April
Williams, OR
- Average rainfall in April: 1.14"
The wettest month (with the highest rainfall) is January (2.01").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in April
Williams, OR
- Average rainfall days in April: 10.8 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in April
Williams, OR
- Average snowfall in April: 0.87"
The month with the highest snowfall is December (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Williams, OR
- Average snowfall days in April: 2.8 days
The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Williams, OR
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 0min).
Average sunshine days in April
Williams, OR
- Average sunshine days in April: 16.8 days
The months with the most sunshine days are July and August (25.3 days).
The month with the least sunshine days is March (15 days).
Average UV index in April
Williams, OR
- 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, February, November and December (UV index 2).
Average cloud cover in April
Williams, OR
- Average cloud cover in April: 48
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in April
Williams, OR
- Average visibility in April: 4mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Williams, Oregon, USA
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