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Contents
- The climate of Renton
- The best time to visit Renton
- The worst time to visit Renton
- Spring weather in Renton
- Summer weather in Renton
- Autumn weather in Renton
- Winter weather in Renton
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Renton
Located in the state of Washington, USA, Renton is primarily governed by a warm, Mediterranean climate - Csb-type under the Köppen climate classification. It's a convergence of geographical positioning and climatological characteristics that provide a diverse annual weather cycle comprising distinct seasons.
Across the year, the temperature fluctuates from a minimum of 34.2°F (1.2°C) in the cold months to a peak of 77.4°F (25.2°C) in the summer. Humidity levels oscillate from a low 68% during the warmer months to an amplified 85% in the colder months. In terms of precipitation, the region experiences rainfall throughout the year, peaking in December with 1.34" (34mm) while reaching the lowest in July, clocking a mere 0.12" (3mm).
Special attention should be given to the notable variations in daylight and sunshine hours. The daylight spans from a short 9 hours in the darker months to almost doubling up to 15.9 hours in the sunny months. Sunshine hours differ considerably too, starting at 4.1 hours in the darker times, escalating to more than double - 10.6 hours, in the sunny periods of the year.
Undoubtedly, Renton experiences unique weather patterns with considerable diversity in its parameters such as rainfall, temperature, and sunshine levels, thus presenting alternating climates between seasons.
Across the year, the temperature fluctuates from a minimum of 34.2°F (1.2°C) in the cold months to a peak of 77.4°F (25.2°C) in the summer. Humidity levels oscillate from a low 68% during the warmer months to an amplified 85% in the colder months. In terms of precipitation, the region experiences rainfall throughout the year, peaking in December with 1.34" (34mm) while reaching the lowest in July, clocking a mere 0.12" (3mm).
Special attention should be given to the notable variations in daylight and sunshine hours. The daylight spans from a short 9 hours in the darker months to almost doubling up to 15.9 hours in the sunny months. Sunshine hours differ considerably too, starting at 4.1 hours in the darker times, escalating to more than double - 10.6 hours, in the sunny periods of the year.
Undoubtedly, Renton experiences unique weather patterns with considerable diversity in its parameters such as rainfall, temperature, and sunshine levels, thus presenting alternating climates between seasons.
The best time to visit Renton
Visiting Renton is arguably most rewarding in the months of July and August. Rainfall reaches its lowest, implying drier conditions, and temperatures average a comfortable 77.4°F (25.2°C), making outdoor exploration enjoyable. These months also witness the most extended daylight spanning 15.5 hours and 14.2 hours respectively, with abundant sunshine extending over 10 hours per day.
A secondary preferable visitation period is late spring, particularly May. Temperatures rise to an agreeable 65.3°F (18.5°C), coupled with extended daylight of 15.1 hours. Rainfall is comparatively minimal, averaging 0.47" (12mm), offering a comfortable visitation climate.
A secondary preferable visitation period is late spring, particularly May. Temperatures rise to an agreeable 65.3°F (18.5°C), coupled with extended daylight of 15.1 hours. Rainfall is comparatively minimal, averaging 0.47" (12mm), offering a comfortable visitation climate.
The worst time to visit Renton
While Renton allures visitors year-round, caution must be exercised during the months of December and January. These months manifest the chilliest temperatures, often dropping to around 35.2°F (1.8°C) in December and 34.2°F (1.2°C) in January. Further dampening outdoor activities, these months exhibit the highest rainfall reaching 1.34" (34mm) and 1.14" (29mm) respectively, alongside shortened daylight of only 8.5 and 9 hours.
Spring weather in Renton
Spring in Renton, spanned across March, April, and May, displays a comfortable transition into warmer weather. Temperatures rise steadily from 46°F (7.8°C) in March to a pleasing 65.3°F (18.5°C) by May. Rainfall sees a significant reduction across spring, dwindling from 0.55" (14mm) in March to a lower 0.47" (12mm) by May. A notable increase in daylight and sunshine hours also takes place, with daylight extending from 11.9 hours in March to 15.1 hours by May, and sunshine hours similarly extending from 6.1 to 8.8 hours.
Summer weather in Renton
Summer reigns in Renton between June and August, presenting a warm and inviting climate. Temperatures peak in this season, escalating to 77.4°F (25.2°C) in both July and August. Rainfall is minimal during these months, descending to as low as just 0.12" (3mm) in July. The region basks in extensive daylight during these months, reinforcing summer conditions, with a generous average of 15.5 to 15.9 hours per day, complemented by an impressive sweep of 9.2 to 10.6 hours of sunshine daily.
Autumn weather in Renton
Autumn, spanning September to November, offers a clear shift towards colder weather in Renton. Temperatures show a decline, starting from 70.3°F (21.3°C) in September and dropping to 49.1°F (9.5°C) by November. Rainfall sees a gradual uptick, doubling from 0.31" (8mm) in September to 0.91" (23mm) by November. Daylight hours are in decline too, retracting from 12.5 hours in September to 9.3 hours by November, and sunshine hours experience a similar decline across this period.
Winter weather in Renton
Winter in Renton, spanning December to February, comprises the coldest months. Temperatures often drop to as low as 34.2°F (1.2°C) in February, and humidity elevates to around 85%. A noticeable upturn in precipitation takes place, peaking at 1.34" (34mm) in December, coupled with a restrictive daylight period, reduced to a mere 8.5 hours also in December. Sunshine hours are at their minimum during this period, squeezed to 4.1 hours daily, underscoring the overall colder and dimmer winter conditions.
Weather in January
In Renton, Washington, January is characterized by chilly temperatures and high humidity levels. Following the chill of December, this month offers an insignificant increase in tangible warmth, where the temperature range fluctuates between a high of 45°F (7.2°C) and a low of 35.2°F (1.8°C). Weather in January »
Weather in February
February displays a slight change from the damp, chilling weather of January in Renton. The average high and low temperatures rise slightly while relative humidity drops by a marginal 1%. With 0.63" (16mm) of snowfall across 1.7 days, this month experiences the year's highest snowfall, making February the peak time for witnessing a slight white-out in Renton. Weather in February »
Weather in March
When March hits, Renton starts witnessing warmer temperatures, but it isn't a striking contrast to February. Consequently, less warm clothing is needed, and daily outdoor activities become more appealing. Sporting a drop in both relative humidity and cloud percentage to 82% and 55% respectively, clearer skies dominate March and yield a noticeable rise in sunshine hours to 6.1 hours per day. Weather in March »
Weather in April
The arrival of April brings about a welcome change in weather dynamics for the inhabitants of Renton. Temperatures tend to swing from 39.4°F (4.1°C) to 56.8°F (13.8°C), marginally warmer compared to March. Signs of a sunnier season become more apparent with longer daylight hours and a decrease in relative humidity to 79%. Weather in April »
Weather in May
May's climatic pattern in Renton marks a noticeable pivot towards the summer season. The brisk spring breeze gives way to milder, more pleasant weather, as the city basks under significantly higher sunlight hours that stand at 8.8 hours per day. Weather in May »
Weather in June
June brings a taste of summer to Renton, as the climatic patterns take a turn towards warmth and brightness. An appreciable increase in sunlight duration is noted, with Renton lighting up for 15.9 hours daily on average. The skies appear predominantly clear and the weather is pleasantly mild, providing ample opportunity for city dwellers to indulge in outdoor pursuits. Weather in June »
Weather in July
July in Renton is distinguished by the height of summer with heightened temperatures and extended daylight. Registering the highest temperatures of the year, ranging from 52°F (11.1°C) to 77.4°F (25.2°C), the city makes the most of the fair weather conditions. Weather in July »
Weather in August
August carries forward July's high summer signature into Renton, with consistent sunny days and scant rainfall. In contrast to the descending temperatures from July, the thermal readings during August hover at similar figures, ensuring the continuation of the summer spell. Weather in August »
Weather in September
As Renton strides into September, there is a sensed arrival of autumn marking a gentle close to summer. Average temperatures register a drop compared to August's peaks, hinting at the forthcoming cooler weather approaching. The retreat of summer also accompanies a slight rise in cloud cover, leading to shorter sunlight hours. Weather in September »
Weather in October
October witnesses an evident departure from the warmer months in Renton as autumn firmly establishes itself. Temperatures exhibit a downward trend, and skies often are filled with gray hues due to the increased cloudiness. The decrease in sunlight duration to just 5.4 hours daily and a return of higher relative humidity mark a noticeable transition from the dry summer season. Weather in October »
Weather in November
The city of Renton begins to feel the chill with the arrival of November. Temperatures take a considerable dip from the October figures, reinstating the need for winter apparel. A rise in relative humidity to 84% and fall in average daylight to 9.3 hours underline the transition into colder months. Weather in November »
Weather in December
December in Renton marks the on-set of winter with lower temperatures and decreased sunlight hours. For those who enjoy colder climates, this is the ideal time, with temperatures moving between 43.3°F (6.3°C) and 34.2°F (1.2°C). Weather in December »
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the most humid months in Renton?
January and December, with an average relative humidity of 85%, are most humid months.
How much does it rain in Renton?
In Renton, during the entire year, the rain falls for 100.6 days and collects up to 7.6" (193mm) of precipitation.
When does it snow in Renton?
Months with snowfall are January through March, November and December.
How many days does it snow in Renton?
In Renton, Washington, during the entire year, snow falls for 4.9 days and aggregates up to 1.18" (30mm) of snow.
What is the month with the least sunshine in Renton?
The months with the least sunshine in Renton, Washington, are January and December, with an average of 4.1h of sunshine.
What is the month with the lowest UV index in Renton?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most in Renton?
February is the month with the most snowfall. Snow falls for 1.7 days and accumulates 0.63" (16mm) of snow.
When is Daylight Saving Time (DST) in Renton?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Renton, Washington, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow in Renton?
April through October are months without snowfall in Renton, Washington.
When are the longest days in Renton?
With an average of 15h and 54min of daylight, June has the longest days of the year in Renton.
What time of the year is the hottest in Renton?
The temperature in Renton, Washington, hits its peak in July and August, recording an average high-temperature of 77.4°F (25.2°C).
What is the least humid month in Renton?
July and August, with an average relative humidity of 68%, are the least humid months.
What is the driest month in Renton?
July is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.12" (3mm) of precipitation.
When is the highest UV index in Renton?
With an average maximum UV index of 6, July is the month with the highest UV index.
What month has the most sunshine in Renton?
August has the most sunshine of the year in Renton, with an average of 10.6h of sunshine.
What month is the coldest in Renton?
The month of December, characterized by an average high of 43.3°F (6.3°C) and a low of 34.2°F (1.2°C), is recognized as the coldest.
What is the wettest month in Renton?
The month with the most rainfall is December, when the rain falls for 11.2 days and typically aggregates up to 1.34" (34mm) of precipitation.
What is the month with the shortest days in Renton?
December has the shortest days of the year in Renton, with an average of 8h and 30min of daylight.
Average temperature
Renton, WA
The warmest months (with the highest average high temperature) are July and August (77.4°F).
The month with the lowest average high temperature is December (43.3°F).
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure
Renton, WA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
30.02"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Renton, WA
- Average wind speed in January:
5mph - Average wind speed in February:
4.9mph - Average wind speed in March:
5.2mph - Average wind speed in April:
4.7mph - Average wind speed in May:
4.1mph - Average wind speed in June:
4mph
- Average wind speed in July:
3.7mph - Average wind speed in August:
3.6mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.8mph - Average wind speed in December:
4.6mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity
Renton, WA
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are July and August (68%).
Average rainfall
Renton, WA
- Average rainfall in January:
1.14" - Average rainfall in February:
0.79" - Average rainfall in March:
0.55" - Average rainfall in April:
0.63" - Average rainfall in May:
0.47" - Average rainfall in June:
0.35"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.2" - Average rainfall in September:
0.31" - Average rainfall in October:
0.79" - Average rainfall in November:
0.91" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days
Renton, WA
- Average rainfall days in January:
10.8 days - Average rainfall days in February:
8.9 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
9.8 days - Average rainfall days in May:
7.9 days - Average rainfall days in June:
7.2 days
- Average rainfall days in July:
4.5 days - Average rainfall days in August:
3 days - Average rainfall days in September:
5.9 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
11.2 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is August (3 days).
Average snowfall
Renton, WA
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Renton, WA
- Average snowfall days in January:
1.2 days - Average snowfall days in February:
1.7 days - Average snowfall days in March:
0.4 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.4 days - Average snowfall days in December:
1.1 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Renton, WA
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 1min - Average daylight in June:
15h and 5min
- Average daylight in July:
15h and 3min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 2min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 6min).
Average sunshine days
Renton, WA
- Average sunshine days in January:
17.1 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
16.4 days - Average sunshine days in May:
20.3 days - Average sunshine days in June:
20.4 days
- Average sunshine days in July:
25.7 days - Average sunshine days in August:
25.8 days - Average sunshine days in September:
22.1 days - Average sunshine days in October:
19.6 days - Average sunshine days in November:
15.7 days - Average sunshine days in December:
17.1 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (15.5 days).
Average UV index
Renton, WA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Renton, WA
The months with the most cloud cover are January and December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Renton, WA
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (5mi).
Renton, Washington, USA
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