Castaic Weather in January

During January, Castaic experiences pleasant daytime temperatures of 19°C (66°F) and cooler nights around 7°C (45°F). As part of the winter season, expect quite a bit of rainfall. Around 62 mm (2.4 in) is typical.

Rainfall in Castaic in January

Based on our climate data of the past 30 years, about 6 days of rain are anticipated, with 62 mm (2.4 in) on average. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.

Temperature in Castaic in January

Castaic in January gets highs of 19°C (66°F) during the day and drops to 7°C (45°F) at night. The winter season is characteristic of January. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 7°C (45°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Castaic in January

Expect a lot of sunshine this month, with about 224 hours of sun. These sunny conditions add to the overall experience.

If you prefer dry days with pleasant temperatures, February, March, April, May, October and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.