Renton (WA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Renton.
Climate overview of Renton
Renton, Washington State, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 25°C (77°F) in July, while winters cool to 7°C (45°F) in December.
The city has a wet climate, receiving around 1083 mm (43 in) of rain/snowfall per year. Despite the high annual total, it has a distinct dry season from July to August, with warm summers and cold winters. November is the wettest month. July is the sunniest month, averaging 10.4 hours of sunshine per day.
Renton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Renton - and find the best time to visit.
Monthly Temperature in Renton
Depending on the time of the year, temperatures range from comfortable to chilly in Renton. On average, daytime temperatures range from a comfortable 25°C (77°F) in July to a chilly 7°C (45°F) in December.
Nighttime temperatures range from 14°C (57°F) in July to 2°C (36°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Renton
Renton has a relatively rain/snowy climate with high precipitation levels, averaging 1083 mm (43 in) of rain/snowfall annually. The seasons in Renton bring significant changes in precipitation. The wettest month, November, receives heavy rainfall, with an average of 171 mm (6.7 in) of precipitation. This rainfall is distributed across 21 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 16 mm (0.6 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Renton Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Renton
In Renton, summer days are longer and more sunny, with daily sunshine hours peaking at 10.4 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.8 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Renton by Month
The relative humidity is high throughout the year in Renton.
The city experiences its highest humidity in December, reaching 80%. In July, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Renton
The mean wind speed varies between 4 m/s (8 knots) and 5 m/s (10 knots) throughout the year. It is lowest in February, April, May, June, July, August, September, October, November and December and highest during January and March. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Renton
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Wettest months: January, February, March, October, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from July to August, with warm summers and cold winters
Frequently asked questions about the climate in Renton
What is the best time to visit Renton?
June, July, August and September typically offer the most optimal weather in Renton. In contrast, January, February, March, November and December tend to have less optimal conditions. Renton has a distinct dry season from July to August, with warm summers and cold winters.
What temperatures can I expect in Renton?
Daytime highs range from 7°C (45°F) in December to 25°C (77°F) in July. Nighttime lows range from 2°C (36°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Renton get?
Annual rainfall is around 1083 mm (43 in). November is the wettest month with 171 mm (6.7 in), while July is the driest with 16 mm (0.6 in).
How sunny is Renton?
Renton receives around 2,171 hours of sunshine per year. July is the sunniest month with 312 hours, while December is the cloudiest with just 54 hours. Overall, Renton enjoys abundant sunshine.
Renton 3-Day Forecast
Renton on the map
Renton is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Kissimmee
33°C (91°F) Orlando33°C (91°F) Miami Beach32°C (90°F) Destin32°C (90°F) New York City
29°C (84°F) Big Bear Lake
27°C (81°F) Los Angeles
24°C (75°F) San Francisco22°C (72°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.