Monmouth

Pierce County, Oregon, United States

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Current Weather

10°

Mostly Clear

Feels Like: 11°

Min: 10°

Max: 20°

The next few hours will be overcast, with today reaching 20°C and dropping to 11°C. The coming days will be drizzle

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Hourly Forecast

10° 10° 10° 10° 12° 15° 17° 18° 18° 18° 20° 20° 20° 20° 19° 18° 17° 16° 15° 15° 14° 13° 13° 12°
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11am
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3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
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Today
Tomorrow

Daylight Hours

06:58

Sunrise

19:16

Sunset

12 hours 17 minutes of sunlight today

Moon

Waxing Crescent

12:12

Moonrise

20:39

Moonset

Daily Forecast

Today

10°
20°

Wednesday

11°
26°

Thursday

13°
27°

Friday

13°
25°

Saturday

12°
25°

Sunday

12°
25°

Monday

12°
20°

Tuesday

11°
20°

Wednesday

18°

Thursday

22°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

90% Humid
Low High

Weather in Monmouth today, September 15, 2026

Cloud cover dominates in Monmouth on September 15, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. The first half of the day looks overcast, as cloud amounts reach about 100% around 06:00. Brighter weather, if it comes, waits until later.

The day peaks near 20°C and cools toward 10°C. Relative humidity sits between 52% and 91%, reaching its peak around 05:00. Expect gentle winds, highest near 19:00 at 4.6 km/h.

The afternoon keeps an overcast feel, as cloud reaches about 100% around 12:00. Outdoor plans may still want a flexible backup. Views remain open at about 16.1 km. Sunrise is at 06:58 and sunset at 19:16, giving 12 hours 17 minutes of sunlight today.

Overall, Monmouth on September 15, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 20°C.

Frequently asked questions about weather in Monmouth

How warm does it get in Monmouth?

The warmest month in Monmouth is August, with average high temperatures of 30°C. The average temperature during this period is around 21°C.

How cold does it get in Monmouth?

The coldest month in Monmouth 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 Monmouth?

The wettest month in Monmouth is December, with an average of 197mm of precipitation.

What is the driest time of year in Monmouth?

The driest month in Monmouth is July, with an average of 5mm of precipitation.

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Metric (°C, km/h)