Eureka, California – Interior Northern California will bake under triple-digit heat through Monday, with highs peaking near 109°F in Big Bar and 104°F in Trinity Center. The National Weather Service has issued a moderate heat risk for inland Humboldt, Trinity, Mendocino, and Lake counties starting Saturday and continuing through June 10.
According to the National Weather Service in Eureka, the hottest days will be Sunday and Monday. Areas like Weaverville, Hayfork, and Hoopa are expected to reach highs between 100°F and 109°F. Heat-sensitive individuals, especially those without cooling or hydration access, are at elevated risk. Health systems and outdoor workers may also feel the strain.
Temperatures are forecast to reach:
- 109°F in Big Bar on Sunday and Monday
- 104°F in Trinity Center by Monday
- 101°F in Weaverville and Hayfork
- Upper 90s in Ukiah, Clearlake, and Hidden Valley Lake
Residents should:
- Stay hydrated and avoid strenuous activity during peak heat
- Use air conditioning when possible
- Check on elderly neighbors and vulnerable individuals
- Never leave children or pets in vehicles
Cooling centers may open locally if conditions worsen. Updates will continue as high heat lingers into early next week.
🔍 Local Forecast for Interior Northern California
- Saturday: Sunny, highs 89–106°F inland
- Sunday: Very hot, highs 90–109°F
- Monday: Peak heat, highs 91–109°F
- Tuesday: Slight cooling, highs 88–103°F
