See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
13°
Partly Cloudy
Feels Like: 11°
Min: 12°
Max: 16°
The next few hours will be breezy and overcast, with tomorrow reaching 15°C and dropping to 11°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:59
Sunrise
19:25
Sunset
Moon
Waxing Crescent
12:46
Moonrise
20:07
Moonset
Daily Forecast
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Wednesday
Thursday
Friday
Saturday
Sunday
Monday
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Wednesday
Thursday
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Weather in Dumbarton tomorrow, September 16, 2026
Dumbarton starts September 16, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Cloud leads the morning, peaking close to 96% near 11:00. Sunshine has little room until later in the day.
The day peaks near 15°C and cools toward 11°C. The air stays humid, with relative humidity between 75% and 90% and the peak around 03:00. Airflow remains manageable, reaching about 6.7 km/h around 15:00.
Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 29.4 km, briefly nearer 22.7 km. Daylight runs from 07:01 to 19:23, lasting 12 hours 21 minutes of sunlight today.
Taken together, Dumbarton looks wet enough on September 16, 2026 that flexible outdoor plans work best, with temperatures peaking near 15°C.
Frequently asked questions about weather in Dumbarton
How warm does it get in Dumbarton?
The warmest month in Dumbarton is July, with average high temperatures of 18°C. The average temperature during this period is around 15°C.
How cold does it get in Dumbarton?
The coldest month in Dumbarton is January, with average low temperatures of 2°C. The average temperature during this period is around 4°C.
What is the wettest time of year in Dumbarton?
The wettest month in Dumbarton is October, with an average of 157mm of precipitation.
What is the driest time of year in Dumbarton?
The driest month in Dumbarton is April, with an average of 68mm of precipitation.
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