See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
13°
Partly Cloudy
Feels Like: 13°
Min: 13°
Max: 15°
The next few hours will be overcast, with today reaching 15°C and dropping to 13°C. The coming days will be partly cloudy
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:04
Sunrise
19:16
Sunset
Moon
Waxing Crescent
13:05
Moonrise
21:25
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
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Friday
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Weather in Arcata today, September 16, 2026
Misty spells are likely in Arcata on September 16, 2026, especially during quieter hours. The day can open dull before any clearer intervals arrive. Expect a grey start, with morning cloud around 77% by 10:00. Outdoor plans early on should not rely on bright skies.
The temperature range runs from about 13°C up to 15°C. The air stays humid, with relative humidity between 89% and 97% and the peak around 23:00. Airflow remains manageable, reaching about 4.1 km/h around 15:00.
Through the afternoon cloud remains the main feature, with cover near 86% around 19:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 14.6 km, briefly nearer 12.2 km. Sunrise is at 07:04 and sunset at 19:16, giving 12 hours 12 minutes of sunlight today.
Taken together, murky spells in Arcata on September 16, 2026 favour slower morning movement before any clearer air arrives.
Frequently asked questions about weather in Arcata
How warm does it get in Arcata?
The warmest month in Arcata is August, with average high temperatures of 20°C. The average temperature during this period is around 16°C.
How cold does it get in Arcata?
The coldest month in Arcata is February, with average low temperatures of 5°C. The average temperature during this period is around 7°C.
What is the wettest time of year in Arcata?
The wettest month in Arcata is January, with an average of 257mm of precipitation.
What is the driest time of year in Arcata?
The driest month in Arcata is July, with an average of 4mm of precipitation.
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