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.
Merrill Weather in September
September in Merrill sees daytime temperatures around 21°C (70°F) and lows of 8°C (46°F) at night. With around 88 mm (3.5 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Merrill in September
Historically, September sees about 12 days of rain, with a monthly average of 88 mm (3.5 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Merrill in September
September tends to be one of the excellent months in Merrill, with 21°C (70°F) in the afternoon and 8°C (46°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Merrill.
Merrill Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
21°C (70°F)
Chance of Rain
40%
Precipitation
88 mm (3.5 in)
Rainy days
12 days
Merrill Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Merrill - 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 Merrill in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags.
What To Do in Merrill in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Merrill 3-Day Forecast
More climate data for Merrill
See the full Merrill 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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