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.
Forest Grove Weather in September
September in Forest Grove averages 25°C (77°F) during the day and 10°C (50°F) at night. The excellent conditions and moderate rainfall make it a solid month to visit.
Rainfall in Forest Grove in September
On average, there are about 8 days with rain during this month, averaging 35 mm (1.4 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Forest Grove in September
September is one of the better months to visit Forest Grove. Expect 25°C (77°F) during the day and 10°C (50°F) at night. Experience the summer season in September. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Forest Grove in September
Expect a lot of sunshine this month, with about 236 hours of sun. These sunny conditions add to the overall experience.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Forest Grove.
Forest Grove Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
25°C (77°F)
Chance of Rain
27%
Precipitation
35 mm (1.4 in)
Rainy days
8 days
Humidity
69% *
Sunshine
236 hours *
Percentage Sunshine
*
* Data from: Portland, the United States of America (40 KM, 25 Miles).
Forest Grove Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Forest Grove - 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 Forest Grove in September
For Forest Grove 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. Some rain is possible, so pack something to handle light showers. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Forest Grove in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping10/10 -
Outdoor sports10/10
Forest Grove 3-Day Forecast
More climate data for Forest Grove
Temperature Rainfall Sunshine Humidity
See the full Forest Grove 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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