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.
Mount Vernon Weather in September
Mount Vernon in September sees pleasant temperatures, with highs around 20°C (68°F) and overnight lows of 10°C (50°F). Rainfall is fairly high at around 63 mm (2.5 in) on average, so pack waterproofs just in case.
Rainfall in Mount Vernon in September
On average, there are about 12 days with rain during this month, averaging 63 mm (2.5 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Mount Vernon in September
The temperature in Mount Vernon in September is excellent. Daytime highs reach 20°C (68°F), with nights dropping to 10°C (50°F). The summer season takes place during September. The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Mount Vernon in September
The month brings about 188 hours of sunlight, offering a comfortable mix of sun and overcast.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Mount Vernon.
Mount Vernon Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
40%
Precipitation
63 mm (2.5 in)
Rainy days
12 days
Sunshine
188 hours *
Percentage Sunshine
*
* Data from: Bellingham, the United States of America (38 KM, 24 Miles).
Mount Vernon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mount Vernon - 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 Mount Vernon in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Mount Vernon in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Swimming6/10 -
Cycling10/10 -
Walking10/10 -
Camping4/10 -
Outdoor sports10/10
Mount Vernon 3-Day Forecast
More climate data for Mount Vernon
See the full Mount Vernon 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
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.