Lewiston Weather in September
In Lewiston, September brings pleasant daytime temperatures around 22°C (72°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.
Rainfall in Lewiston in September
Rain is expected on roughly 10 days, totalling around 101 mm (4 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Lewiston in September
September in Lewiston sees highs of 22°C (72°F) and lows of 10°C (50°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Lewiston in September
The days are predominantly sunny, with an estimated total of around 228 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Lewiston's climate page.
Lewiston Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
22°C (72°F)
Chance of Rain
34%
Precipitation
101 mm (4 in)
Rainy days
10 days
Humidity
77% *
Sunshine
228 hours *
Percentage Sunshine
61% *
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
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unpleasant
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What to Wear in Lewiston in September
For Lewiston 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 Lewiston in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Lewiston's climate page.
Temperature Rainfall Sunshine Humidity
See the full Lewiston climate overview or explore weather in the United States of America.
