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.
Mercer Weather in September
September in Mercer brings high temperatures, with highs of 24°C (75°F) and nights dropping to 11°C (52°F). Rainfall is on the higher side this month, averaging around 95 mm (3.7 in), so keep a rain jacket handy.
Rainfall in Mercer in September
Typically around 11 days of rainfall are expected, averaging 95 mm (3.7 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Mercer in September
September is a excellent month in Mercer, with 24°C (75°F) during the day and 11°C (52°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Mercer Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
24°C (75°F)
Chance of Rain
38%
Precipitation
95 mm (3.7 in)
Rainy days
11 days
Mercer Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mercer - 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 Mercer in September
For Mercer in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
What To Do in Mercer in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Mercer 3-Day Forecast
More climate data for Mercer
See the full Mercer 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.
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Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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