Chehalis
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Chehalis Weather in September

September is one of the excellent months to visit Chehalis, with daytime temperatures of 23°C (73°F) and lows of 9°C (48°F) at night. Some rainfall is typical for this time of year.

Rainfall in Chehalis in September

Typically around 9 days of rainfall are expected, averaging 46 mm (1.8 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Chehalis in September

The excellent temperature in Chehalis in September makes it a solid month to visit, with 23°C (73°F) during the day and 9°C (48°F) at night. September is known for being in the summer season. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

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

Chehalis Temperature in September

Min Temperature
9°C (48°F)
Max Temperature
23°C (73°F)
Chance of Rain
31%
Precipitation
46 mm (1.8 in)
Rainy days
9 days

Chehalis Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Chehalis - 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 Chehalis in September

For Chehalis 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. Rain is likely on several days, so bring a good rain jacket.

What To Do in Chehalis in September

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

  • Cycling
    10/10
  • Walking
    10/10
  • Camping
    5/10
  • Outdoor sports
    10/10

Chehalis 3-Day Forecast

More climate data for Chehalis

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.