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.
Sullivan Weather in September
September in Sullivan typically sees daytime highs of 26°C (79°F) and nighttime lows of 14°C (57°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Sullivan in September
You can typically expect 10 days of rain this month, averaging around 104 mm (4.1 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Sullivan in September
In September, Sullivan sees high temperatures, with highs of 26°C (79°F). Nights drop to around 14°C (57°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.If you prefer dry days with pleasant temperatures, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Sullivan Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
26°C (79°F)
Chance of Rain
33%
Precipitation
104 mm (4.1 in)
Rainy days
10 days
Sullivan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sullivan - 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 Sullivan in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Sullivan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Sullivan 3-Day Forecast
More climate data for Sullivan
See the full Sullivan 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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