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Humboldt County Fairgrounds Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY |
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| Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Mostly Cloudy | Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog |
| Hi: 69°FHi: 21°C | Lo: 54°FLo: 12°C | Hi: 69°FHi: 21°C | Lo: 54°FLo: 12°C | Hi: 68°FHi: 20°C | Lo: 54°FLo: 12°C | Hi: 66°FHi: 19°C | Hi: 68°FHi: 20°C Lo: 54°FLo: 12°C | Hi: 68°FHi: 20°C Lo: 54°FLo: 12°C | Hi: 68°FHi: 20°C Lo: 54°FLo: 12°C | Hi: 68°FHi: 20°C Lo: 54°FLo: 12°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 136 AM PDT Tue Aug 18 2026 
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Humboldt County Fairgrounds Forecast Discussion
Issued: 1200 AM PDT Tue Aug 18 2026
Key Messages
- Smoke remains over areas outside of the marine layer due to local and distant wildfires.
- Interior temperatures are expected to remain near normal through the first half of the week with highs in the low to mid 90s.
- Another trough is expected to bring below normal temperatures and the potential for a few thunderstorms late in the week.
Discussion
...Tuesday the ridge is expected to build slightly over the area. The marine clouds are expected to push back to...