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
April introduces a marginal temperature uplift, with average high-temperatures adjusting from March's cool 50.2°F (10.1°C) to a mild 55.9°F (13.3°C). Foster records a consistent low-temperature of 36.9°F (2.7°C) during April nights.Humidity
In April, the average relative humidity is 82%.Rainfall
In April, the rain falls for 18.7 days. Throughout April, 4.06" (103mm) of precipitation is accumulated. Throughout the year, there are 167.6 rainfall days, and 36.54" (928mm) 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, Foster aggregates 0.08" (2mm) of snow. Throughout the year, in Foster, there are 7.9 snowfall days, and 7.76" (197mm) of snow is accumulated.Daylight
In Foster, Oregon, the average length of the day in April is 13h and 30min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:38 pm. On the last day of April, sunrise is at 6:01 am and sunset at 8:14 pm PDT.
Sunshine
In April, the average sunshine is 7h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 3 during April leads to these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the average humidity in April?
How many days does it rain in April in Foster?
What is the last month it snows?
How many hours of daylight does Foster have in April?
What time are sunrise and sunset in April in Foster?
How many hours of sunshine does Foster have in April?
What is the UV index intensity in April?
Average temperature in April
Foster, OR
- Average high temperature in April: 55.9°F
The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in April: 36.9°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in April
Foster, OR
- Average pressure in April: 30.07"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in April
Foster, OR
- Average wind speed in April: 4.5mph
The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in April
Foster, OR
- Average humidity in April: 82%
The months with the highest relative humidity are February, March and December (86%).
The month with the lowest relative humidity is August (66%).
Average rainfall in April
Foster, OR
- Average rainfall in April: 4.06"
The wettest month (with the highest rainfall) is December (5.47").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in April
Foster, OR
- Average rainfall days in April: 18.7 days
The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is July (4.1 days).
Average snowfall in April
Foster, OR
- Average snowfall in April: 0.08"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Foster, OR
- 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
Foster, OR
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 7h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in April
Foster, OR
- Average sunshine days in April: 9.8 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in April
Foster, OR
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in April
Foster, OR
- Average cloud cover in April: 57
The months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in April
Foster, OR
- Average visibility in April: 4mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are February and April (4mi).
Foster, Oregon, USA
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