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Hourly Forecast
Daylight Hours
06:57
Sunrise
19:15
Sunset
Moon
Waxing Crescent
12:14
Moonrise
20:36
Moonset
Daily Forecast
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Weather in Forest Grove today, September 15, 2026
Forest Grove keeps a mostly sunny profile on September 15, 2026, aside from a cloudier spell around 16:00. Outside that window, bright conditions should still lead the day.
The temperature range runs from about 11°C up to 21°C. Relative humidity sits between 49% and 79%, reaching its peak around 22:00. A lighter breeze peaks around 23:00 near 4.6 km/h.
Later hours favour clearer intervals, as cloud stays near 43% around 16:00. The afternoon is the better half for outdoor time. Visibility stays near 16.1 km. Expect sunrise at 06:57, sunset at 19:15, and 12 hours 18 minutes of sunlight today overall.
Taken together, settled sunshine in Forest Grove on September 15, 2026 makes outdoor timing easier, with highs near 21°C.
Frequently asked questions about weather in Forest Grove
How warm does it get in Forest Grove?
The warmest month in Forest Grove is August, with average high temperatures of 29°C. The average temperature during this period is around 21°C.
How cold does it get in Forest Grove?
The coldest month in Forest Grove is February, with average low temperatures of 2°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Forest Grove?
The wettest month in Forest Grove is December, with an average of 199mm of precipitation.
What is the driest time of year in Forest Grove?
The driest month in Forest Grove is July, with an average of 5mm of precipitation.
