Weather in Eureka, California for December 2025
Until now, December 2025 in Eureka has been nearly identical to the historical average, with a temperature of 12.5 °F (showing only a slight deviation of 0.3 °F).
Expect cooler weather in the next days in Eureka with the forecast suggesting a temperature of 11.4 °F, lower than the historical average.
In general, the average temperature in Eureka at the beginning of December is 12 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 10.3 °F by the end of December.
The climate of Eureka in December is notably wet, with an average of 14 rainy days, and a total of 554.6 mm of precipitation.
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Eureka Weather December
Temperatures trend during December in Eureka
December weather in Eureka day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Partly cloudy | 13° /7° | 0 mm | 4 | |
| Dec. 2 |  Cloudy | 12° /9° | 0 mm | 3 | |
| Dec. 3 |  Mist | 12° /7° | 0 mm | 3 | |
| Dec. 4 | Mist | 12° /8° | 0 mm | 4 | |
| Dec. 5 | Mist | 12° /9° | 0 mm | 3 | |
| Dec. 6 |  Overcast | 12° /9° | 1 mm | 3 | |
| Dec. 7 |  Moderate or heavy rain shower | 11° /8° | 7.3 mm | 3 | |
| Dec. 8 | Mist | 12° /7° | 0 mm | 3 | |
| Dec. 9 |  Sunny | 14° /8° | 0 mm | 4 | |
| Dec. 10 | Overcast | 13° /10° | 0 mm | 3 | |
| Dec. 11 | Overcast | 13° /8° | 0 mm | 3 | |
| Dec. 12 |  Moderate rain | 11° /9° | 28.5 mm | 3 | |
| Dec. 13 | Moderate or heavy rain shower | 12° /9° | 9 mm | 4 | |
| Dec. 14 |  Moderate or heavy rain with thunder | 12° /9° | 49.2 mm | 3 | |
| Dec. 15 | Overcast | 13° /8° | 0 mm | 4 | |
| Dec. 16 | Moderate rain | 13° /10° | 29.2 mm | 3 | |
| Dec. 17 |  Patchy rain possible | 15° /11° | 3.5 mm | 0.3 | |
| Dec. 18 | Overcast | 13° /10° | 0 mm | 0.1 | |
| Dec. 19 |  Heavy rain | 13° /9° | 82.3 mm | 0 | |
| Dec. 20 | Patchy rain possible | 11° /6° | 1 mm | 0.1 | |
| Dec. 21 | Moderate rain | 12° /10° | 9.1 mm | 0.1 | |
| Dec. 22 | Patchy rain possible | 12° /7° | 3.4 mm | 0 | |
| Dec. 23 | Patchy rain possible | 11° /6° | 0.4 mm | 2 | |
| Dec. 24 | Patchy rain possible | 10° /7° | 1.4 mm | 2 | |
| Dec. 25 | Patchy rain possible | 9° /7° | 4.1 mm | 2 | |
| Dec. 26 | Partly cloudy | 10° /5° | 0 mm | 3 | |
| Dec. 27 | Patchy rain possible | 10° /5° | 0.2 mm | 2 | |
| Dec. 28 | Patchy rain possible | 10° /7° | 0.8 mm | 2 | |
| Dec. 29 | Patchy rain possible | 11° /8° | 1 mm | 2 | |
| Dec. 30 | Moderate rain | 12° /8° | 5.1 mm | 3 | |
| Dec. 31 | Patchy rain possible | 10° /6° | 0.1 mm | 3 | |
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Eureka in December - FAQ
December rainfall patterns in Eureka
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Where is Eureka?Get accurate weather forecasts for Eureka, located at latitude 40.802 and longitude -124.164. Stay updated with localized weather information tailored for Eureka.