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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Oz Monitorly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for current conditions; Casterton’s inland western Victoria location brings cool winters with average lows near 5°C and warm summers peaking around 30°C, so plan layers or sun protection accordingly.
What is the typical weather pattern for Casterton?
Casterton experiences a temperate climate with four distinct seasons. Summer (December–February) averages 25–30°C, with occasional heatwave days above 38°C. Winter (June–August) sees daytime highs of 13–15°C and overnight lows around 4–6°C, often with frost. Rainfall is spread year-round, averaging 550–600 mm annually, with spring being the wettest season. For a quick snapshot, refer to the elders weather casterton page on our network.
How reliable are extended forecasts for Casterton?
Seven-day forecasts from the Bureau of Meteorology are generally accurate for temperature bands and broad rain probabilities. For longer planning, the casterton weather 14 day forecast provides trend guidance but should be checked closer to the date. The casterton weather radar is useful for tracking short-term rain or storms approaching from the west. For a localised view, review the weather in casterton 10 days for mid-range planning.
How does Casterton weather compare to nearby towns?
Casterton is slightly cooler than Portland due to its inland position, but warmer than Hamilton on average. Its proximity to the Grampians can enhance rainfall, especially in late spring.
What is the best time to visit Casterton?
Late spring (November) and early autumn (March) offer mild days of 20–25°C and lower rain probability. Summer can be hot, while winter is crisp but suitable for indoor activities.
How does the casterton weather radar help locals?
The radar, part of the BOM network, shows current rain bands and storm cells moving across western Victoria, giving 30–60 minute lead time for showers or severe thunderstorm activity.
For broader Australian conditions, visit our Australia weather hub. If severe weather is expected, check the Severe Weather Warning page.