See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
12°
Overcast
Feels Like: 13°
Min: 12°
Max: 16°
The next few hours will be overcast, with today reaching 16°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
07:28
Sunrise
19:04
Sunset
Moon
Waxing Gibbous
18:43
Moonrise
05:27
Moonset
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View stargazing scoreWeather in Grimstad today, September 25, 2026
Grimstad looks cloudy on September 25, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Expect a grey start, with morning cloud around 100% by 09:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 16°C and cools toward 12°C. Expect humidity between 67% and 91%, most humid near 22:00. Winds stay light, near 5.7 km/h by 15:00, so the day feels still more than breezy.
Through the afternoon cloud remains the main feature, with cover near 100% around 19:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 28.0 km, briefly nearer 18.6 km. Expect sunrise at 07:28, sunset at 19:04, and 11 hours 36 minutes of sunlight today overall.
Overall, Grimstad on September 25, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 16°C.
Frequently asked questions about weather in Grimstad
How warm does it get in Grimstad?
The warmest month in Grimstad is July, with average high temperatures of 20°C. The average temperature during this period is around 17°C.
How cold does it get in Grimstad?
The coldest month in Grimstad is January, with average low temperatures of -1°C. The average temperature during this period is around 1°C.
What is the wettest time of year in Grimstad?
The wettest month in Grimstad is November, with an average of 140mm of precipitation.
What is the driest time of year in Grimstad?
The driest month in Grimstad is April, with an average of 54mm of precipitation.
