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City briefing

Sunnyside

Washington, United States · 16,000 people
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The year’s records
Annual mean 11°C · wettest around May · prevailing wind W
Warmest
31.2 °C
Coldest
1.5 °C
Wettest
37%
Windiest
5.0 m/s
Prevailing
W
3.3 m/s average

When this place is good five ratings · thirty-six ten-day sections · click a cell to read it

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Every reading

bars actual · line feels-like, °C
-5051015202530JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember-5051015202530JFMAMJJASOND

The average temperature in Sunnyside over the whole year is 11°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -1°C.

Month by month Sunnyside climate by month: average temperatures year round · click a month to read it

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January3°C-1°C-1°C21%56%2.0 m/s008
February5°C-1°C1°C17%42%2.8 m/s0020
March11°C2°C6°C17%34%3.1 m/s6053
April16°C6°C11°C24%23%4.3 m/s28173
May21°C11°C16°C25%21%4.3 m/s591269
June24°C15°C20°C23%14%4.9 m/s602854
July30°C18°C26°C10%6%4.0 m/s545729
August30°C17°C27°C14%9%3.1 m/s556125
September22°C11°C19°C15%19%2.8 m/s712559
October16°C6°C13°C17%24%2.5 m/s38378
November8°C2°C4°C18%42%2.3 m/s3034
December2°C-1°C-1°C20%61%2.0 m/s008

High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.

Seasons, and the year in short Sunnyside weather by season

Year round, Sunnyside has days of about 2°C at their warmest in December, its coolest month, and 30°C in July, its warmest; the coolest hours of the day run from -1°C to 18°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around May and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.

Sunnyside weather in winterDecember to February

High 3°CLow -1°CRain 20%

Winter in Sunnyside has typical daily highs of about 3°C and lows of about -1°C, with a 20% chance of rain on a given day.

Sunnyside weather in springMarch to May

High 16°CLow 7°CRain 22%

Spring in Sunnyside has typical daily highs of about 16°C and lows of about 7°C, with a 22% chance of rain on a given day.

Sunnyside weather in summerJune to August

High 28°CLow 16°CRain 16%

Summer in Sunnyside has typical daily highs of about 28°C and lows of about 16°C, with a 16% chance of rain on a given day.

Sunnyside weather in autumnSeptember to November

High 15°CLow 6°CRain 17%

Autumn in Sunnyside has typical daily highs of about 15°C and lows of about 6°C, with a 17% chance of rain on a given day.

When is the rainy season in Sunnyside?

The rainy (wet) season in Sunnyside runs from April to June, peaking in May with a 25% chance of rain on a given day. The dry season is July to October; July is the driest month, at 10%.

What time of year is Sunnyside windiest?

Winds in Sunnyside are highest in June, averaging 4.9 m/s (18 km/h), and lightest in January, at 2.0 m/s (7 km/h). The prevailing wind is from the W.

What is the average temperature in Sunnyside year round?

The average temperature in Sunnyside over the whole year is 11°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -1°C.

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