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
Lewiston's weather in April presents a minor rise in the average high-temperature, moving from a frosty 48.6°F (9.2°C) in March to a moderate 56.1°F (13.4°C). During the month of April, the temperature generally drops to a low average of 37°F (2.8°C).Humidity
The average relative humidity in April is 69%.Rainfall
In Lewiston, in April, during 16.3 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Lewiston, during the entire year, the rain falls for 142.4 days and collects up to 14.21" (361mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 0.5 snowfall days, in April, Lewiston aggregates 0.2" (5mm) of snow. In Lewiston, during the entire year, snow falls for 24.2 days and aggregates up to 10.16" (258mm) of snow.Daylight
The average length of the day in April is 13h and 37min.On the first day of April, sunrise is at 6:25 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 7:56 pm PDT.
Sunshine
In April, the average sunshine is 9.7h.UV index
The average daily maximum UV index in April in Lewiston is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 3 in April suggests the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Lewiston?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
How many hours of daylight does Lewiston have in April?
When are sunrise and sunset in April?
How long on average sun shines in April?
How high is the UV index in April?
Average temperature in April
Lewiston, ID
- Average high temperature in April: 56.1°F
The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in April: 37°F
The month with the highest average low temperature is August (59.2°F).
The coldest month (with the lowest average low temperature) is December (24.4°F).
Average pressure in April
Lewiston, ID
- Average pressure in April: 30"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in April
Lewiston, ID
- Average wind speed in April: 5.7mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.3mph).
Average humidity in April
Lewiston, ID
- Average humidity in April: 69%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (38%).
Average rainfall in April
Lewiston, ID
- Average rainfall in April: 1.38"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in April
Lewiston, ID
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in April
Lewiston, ID
- Average snowfall in April: 0.2"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Lewiston, ID
- Average snowfall days in April: 0.5 days
The month with the highest number of snowfall days is December (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Lewiston, ID
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in April: 9h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in April
Lewiston, ID
- Average sunshine days in April: 11.8 days
The month with the most sunshine days is July (24 days).
The months with the least sunshine days are February and March (10.8 days).
Average UV index in April
Lewiston, ID
- Average UV index in April: 3
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in April
Lewiston, ID
- Average cloud cover in April: 37
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in April
Lewiston, ID
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Lewiston, Idaho, USA
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