Mount Vernon
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Mount Vernon Weather in September

September in Mount Vernon averages 24°C (75°F) during the day and 11°C (52°F) at night. Quite a bit of rainfall is typical this month, with around 90 mm (3.5 in) on average. An umbrella is a good idea.

Rainfall in Mount Vernon in September

Typically, about 11 days will experience rainfall, with an average of 90 mm (3.5 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Mount Vernon in September

The excellent temperature in Mount Vernon in September makes it a solid month to visit, with 24°C (75°F) during the day and 11°C (52°F) at night. This kind of day-to-night contrast is typical for this time of year. 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.

Sunshine in Mount Vernon in September

The city usually sees around 212 hours of sunlight, indicating many sunny days , a great month for sightseeing.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

Mount Vernon Temperature in September

Min Temperature
11°C (52°F)
Max Temperature
24°C (75°F)
Chance of Rain
37%
Precipitation
90 mm (3.5 in)
Rainy days
11 days
Humidity
69% *
Sunshine
212 hours *
Percentage Sunshine
57% *
* Data from: Columbus, the United States of America (64 KM, 40 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

For Mount Vernon 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Mount Vernon in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    9/10
  • Cycling
    9/10
  • Walking
    9/10
  • Barbeque
    8/10
  • Camping
    8/10
  • Outdoor sports
    9/10

Mount Vernon 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

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