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.
Sunnyside Weather in September
September is one of the excellent months to visit Sunnyside, with daytime temperatures of 26°C (79°F) and lows of 8°C (46°F) at night. Rainfall is minimal, averaging just 8 mm (0.3 in) for the month.
Rainfall in Sunnyside in September
On average, there are about 3 days with rain during this month, averaging 8 mm (0.3 in). The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Sunnyside in September
September in Sunnyside is generally excellent, with days reaching 26°C (79°F) and nights settling around 8°C (46°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, September and October typically offer the best weather for Sunnyside.
Sunnyside Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
26°C (79°F)
Chance of Rain
11%
Precipitation
8 mm (0.3 in)
Rainy days
3 days
Sunnyside Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sunnyside - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sunnyside in September
Warm but pleasant conditions in Sunnyside in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection.
What To Do in Sunnyside in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping5/10 -
Outdoor sports8/10
Sunnyside 3-Day Forecast
More climate data for Sunnyside
See the full Sunnyside climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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