April weather forecastRochester, WA
April
Weather in April
April is a moderate spring month in Rochester, Washington, with an average temperature varying between 56.7°F (13.7°C) and 37.4°F (3°C).Temperature
Rochester's transition into April is marked by a minor temperature shift, moving from a cool 50.5°F (10.3°C) in March to a refreshing 56.7°F (13.7°C). An average minimum temperature of 37.4°F (3°C) is recorded during the month of April.Humidity
In Rochester, Washington, the average relative humidity in April is 83%.Rainfall
In Rochester, in April, during 17.6 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 168 rainfall days, and 23.94" (608mm) of precipitation is accumulated.Snowfall
In Rochester, snow does not fall in April through October.Daylight
In Rochester, the average length of the day in April is 13h and 38min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:42 pm. On the last day of April, sunrise is at 5:57 am and sunset at 8:21 pm PDT.
Sunshine
In April, the average sunshine is 6.8h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In April, the maximum UV index of 3 suggests these recommendations:
Act with care - The need to guard against sun damage is communicated. To guard against the harmful effects of the Sun, minimize exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Rochester, WA
- Average high temperature in April: 56.7°F
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in April: 37.4°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 (33.1°F).
Average pressure in April
Rochester, WA
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed in April
Rochester, WA
- Average wind speed in April: 4.4mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in April
Rochester, WA
- Average humidity in April: 83%
The month with the highest relative humidity is November (90%).
The month with the lowest relative humidity is July (73%).
Average rainfall in April
Rochester, WA
- Average rainfall in April: 1.85"
The wettest month (with the highest rainfall) is January (3.86").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in April
Rochester, WA
- Average rainfall days in April: 17.6 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in April
Rochester, WA
- Average snowfall in April: 0"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Rochester, WA
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is February (2.7 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
Rochester, 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 48min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in April
Rochester, WA
- Average sunshine days in April: 10.1 days
The month with the most sunshine days is August (20.9 days).
The months with the least sunshine days are February and March (9.3 days).
Average UV index in April
Rochester, 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
Rochester, WA
- Average cloud cover in April: 59
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in April
Rochester, WA
- Average visibility in April: 4mi
The month with the highest visibility is July (5mi).
The months with the lowest visibility are January, February, March, April, May, June, August, September, October, November and December (4mi).
