---
title: "10 Day Weather Forecast for Castaic Junction, CA"
description: "Get the latest 10 day weather forecast for Castaic Junction, CA. Stay prepared with accurate and up-to-date weather information to plan your week ahead."
location: "Castaic Junction, CA"
canonical: "https://www.weatherbug.com/weather-forecast/10-day-weather/castaic-junction-ca-91355"
coordinates: ["34.44083,-118.60648"]
temperature_units: "°F"
last_updated: "2026-05-28T19:07:00.0000000Z"
source: "WeatherBug"
---

# 10 Day Weather Forecast for Castaic Junction, CA

Get the latest 10-day weather forecast for Castaic Junction, CA, including day and night conditions, high and low temperatures, wind speed and direction and precipitation chances.
Forecast issued on 2026-05-28T19:07:00+00:00.

## 10 Day Weather Forecast

| Date       | Day Forecast                                     | Night Forecast                                 | High °F | Low °F |

| ---------- | ------------------------------------------------ |------------------------------------------------| -------: | -------: |

| Thu, May 28 | Mostly cloudy. Highs in the mid 60s. South winds 10 to 20 mph in the afternoon. | Mostly cloudy with a 20 percent chance of showers. Lows in the 40s. Southwest winds 10 to 20 mph in the evening. | 62°F | 50°F |
| Fri, May 29 | Mostly cloudy in the morning then sunny. Highs in the lower to mid 70s. Southwest winds 10 to 20 mph in the afternoon. | Clear. Lows in the mid 40s to lower 50s. West winds 10 to 20 mph in the evening. | 69°F | 50°F |
| Sat, May 30 | Sunny. Highs in the lower to mid 80s. | Clear. Lows in the upper 40s to mid 50s. | 79°F | 54°F |
| Sun, May 31 | Sunny. Highs in the mid 80s to around 90. | Clear. Lows in the mid 50s to around 60. | 84°F | 57°F |
| Mon, Jun 1 | Sunny. Highs in the mid to upper 80s. | Mostly clear. Lows in the mid 50s to around 60. | 83°F | 56°F |
| Tue, Jun 2 | Sunny. Highs in the lower to mid 80s. | Mostly clear. Lows in the mid 50s to around 60. | 82°F | 58°F |
| Wed, Jun 3 | Sunny. Highs in the mid 80s to around 90. | Clear. Low temperature around 63F. Dew point will be around 45F with an average humidity of 44%. Winds will be 2 mph from the SW. | 87°F | 63°F |
| Thu, Jun 4 | Sunny. High temperature around 88F. Dew point will be around 53F with an average humidity of 39%. Winds will be 5 mph from the SW. | Clear. Low temperature around 60F. Dew point will be around 53F with an average humidity of 62%. Winds will be 3 mph from the S. | 88°F | 60°F |
| Fri, Jun 5 | Sunny. High temperature around 83F. Dew point will be around 55F with an average humidity of 47%. Winds will be 6 mph from the S. | Clear. Low temperature around 58F. Dew point will be around 54F with an average humidity of 68%. Winds will be 3 mph from the S. | 83°F | 58°F |
| Sat, Jun 6 | Sunny. High temperature around 81F. Dew point will be around 54F with an average humidity of 49%. Winds will be 6 mph from the S. | Clear. Low temperature around 56F. Dew point will be around 53F with an average humidity of 70%. Winds will be 3 mph from the SW. | 81°F | 56°F |



## Source Information
- Source: "https://www.weatherbug.com/weather-forecast/10-day-weather/castaic-junction-ca-91355"
- Last Updated: "2026-05-28T19:07:00+00:00"