Moonstone Beach Weather Forecast
- 49
- 54
Rain
- 54
- 58
Rain
- 49
- 56
Rain
- 49
- 53
Rain
- 50
- 56
Rain
- 48
- 53
Rain
Today 17 Dec Northern Humboldt Coast
Mostly cloudy then becoming partly cloudy in the late morning and early afternoon then becoming mostly cloudy. Rain Showers likely in the Morning, then chance of rain in the afternoon. Highs 52 to 62. Southeast wind around 5 Mph shifting to the northwest in the afternoon.
Tonight 17 Dec Northern Humboldt Coast
Cloudy. Chance of rain in the Evening, then rain overnight. Lows 41 to 51. Southeast wind 5 to 15 Mph.
Moonstone Beach Temperature Statistics
December Temperature
Arcata / Eureka, Arcata Airport (3.1 miles)
Lowest 1 December, 2025
37 °FAverage December
47.9 °FHighest 9 December, 2025
59 °F
Climate (2020–Present)
Arcata / Eureka, Arcata Airport (3.1 miles)
Average Low 2020–2025
45.4 °FAverage 2020–2025
52.1 °FAverage High 2020–2025
59.3 °F