Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August, on average, is the warmest month, registering a high temperature of 77°F (25°C) and a low of 50.7°F (10.4°C).Humidity
In Grand Rapids, the average relative humidity in August is 74%.Rainfall
The months with the least rainfall in Grand Rapids are July and August Rain falls for 6.4 days and accumulates 0.51" (13mm) of rain.Snowfall
May through October are months without snowfall.Daylight
In August, the average length of the day in Grand Rapids is 14h and 5min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:42 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:53 pm PDT.
Sunshine
The month with the most sunshine is August, with an average of 10.2h of sunshine.UV index
In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In August, the UV index of 4 transforms into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month in Grand Rapids?
What is the temperature in August?
What is the average humidity in August?
What is the driest month?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How many hours of sunshine does Grand Rapids have in August?
How high is the UV index in August?
Average temperature in August
Grand Rapids, OR
- Average high temperature in August: 77°F
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is December (42.1°F).
- Average low temperature in August: 50.7°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in August
Grand Rapids, OR
- Average pressure in August: 30.02"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.02"Hg).
Average wind speed in August
Grand Rapids, OR
- Average wind speed in August: 4.1mph
The windiest months (with the highest average wind speed) are January, March and November (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in August
Grand Rapids, OR
- Average humidity in August: 74%
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in August
Grand Rapids, OR
- Average rainfall in August: 0.51"
The wettest month (with the highest rainfall) is January (5.79").
The driest months (with the least rainfall) are July and August (0.51").
Average rainfall days in August
Grand Rapids, OR
- Average rainfall days in August: 6.4 days
The month with the highest number of rainy days is March (21.7 days).
The month with the least rainy days is July (6 days).
Average snowfall in August
Grand Rapids, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Grand Rapids, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Grand Rapids, OR
- Average daylight in August: 14h and 1min
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 August: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in August
Grand Rapids, OR
- Average sunshine days in August: 21.3 days
The month with the most sunshine days is July (22.1 days).
The months with the least sunshine days are February and March (7.6 days).
Average UV index in August
Grand Rapids, OR
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Grand Rapids, OR
- Average cloud cover in August: 34
The months with the most cloud cover are February and March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in August
Grand Rapids, OR
- Average visibility in August: 5mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
Grand Rapids, Oregon, USA
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