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Arcata, CA Weather Tomorrow

Weather conditions can change quickly, so check tomorrow's Arcata forecast and the complete 5 day outlook with precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Arcata area.
Updated: Thu Sep 10th 2026 2:30 AM PDT
Arcata, CA Weather – 9-10 – Overcast
80° / 56°
Overcast
Daytime highs will reach 80°F with lows dropping to 56°F in Arcata, where skies will be overcast. There might be light rainfall having a 17% chance with an estimated 0in. Winds will be light at 7mph and gusts of 17.7mph at 1 PM. Humidity levels should be comfortable, sitting around 51% on average, the maximum being 91% at 8 PM and 30% being its lowest at 12 PM. Barometric pressure is its highest of 30inHg at 3 AM, a lowest point of 29.94inHg at 4 PM with an avg 29.98inHg.
Arcata, CA Weather – 9-11 – Sunny
69° / 48°

Weather Tomorrow

Sunny
Arcata is set for a sunny day with temperatures peaking at 69°F and dipping to 48°F. There might be light rainfall having a 11% chance with an estimated 0in. Winds will be light at 8mph and gusts of 18.6mph at 1 PM. The humidity will be on the higher side, averaging about 77%, the maximum being 99% at 8 PM and 43% being its lowest at 12 PM. Barometric pressure is its highest of 29.99inHg at 12 AM, a lowest point of 29.94inHg at 4 PM with an avg 29.96inHg.
Arcata, CA Weather – 9-12 – Mist
62° / 48°
Mist
Arcata may see mist, with daytime highs of 62°F and overnight lows near 48°F. There's a moderate 30% chance of rainfall with an estimated 0.01in. Winds will be light at 9mph and gusts of 13.6mph at 3 AM. High humidity with average of 81% is anticipated, the maximum being 97% at 1 AM and 52% being its lowest at 3 PM. Barometric pressure is its highest of 30.07inHg at 11 PM, a lowest point of 29.94inHg at 4 AM with an avg 29.99inHg.
Arcata, CA Weather – 9-13 – Sunny
68° / 46°
Sunny
Arcata may see a sunny day, with daytime highs of 68°F and overnight lows near 46°F. There's a very small chance of rainfall, only about 7%. Winds will be light at 9mph and gusts of 17.2mph at 12 PM. The humidity will be on the higher side, averaging about 73%, the maximum being 97% at 9 PM and 35% being its lowest at 11 AM. Barometric pressure is its highest of 30.08inHg at 2 AM, a lowest point of 29.92inHg at 5 PM with an avg 30.02inHg.
Arcata, CA Weather – 9-14 – Sunny
67° / 49°
Sunny
In Arcata, it will be sunny with highs near 67°F and lows around 49°F. There's a very small chance of rainfall, only about 10% with an estimated 0in. Winds will be light at 8mph and gusts of 18.3mph at 2 PM. The humidity will be on the higher side, averaging about 73%, the maximum being 99% at 8 PM and 47% being its lowest at 11 AM. Barometric pressure is its highest of 30inHg at 12 AM, a lowest point of 29.91inHg at 2 PM with an avg 29.95inHg.
Arcata, CA Weather – 9-15 – Sunny
62° / 48°
Sunny
Bright and sunny conditions in Arcata, with a high of 62°F and a low of 48°F. There might be light rainfall having a 14% chance with an estimated 0in. Winds will be light at 8mph and gusts of 17.4mph at 5 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 97% at 8 PM and 56% being its lowest at 2 PM. Barometric pressure is its highest of 29.97inHg at 12 AM, a lowest point of 29.91inHg at 5 PM with an avg 29.94inHg.

Currently

Clear 64°F
30.01 inHg.
Barometer
40%
Humidity
ENE 4 mph
Wind
Clear

5 Day Forecast Nearby

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