Sterling Weather in September

Sterling in September sees moderate temperatures, with highs around 14°C (57°F) and overnight lows of 7°C (45°F). Rainfall is at its peak this month, around 127 mm (5 in) on average, so waterproofs are essential.

Rainfall in Sterling in September

During the wettest month of the year, an umbrella can be your best friend to stay dry. Historically, September sees about 15 days of rain, with a monthly average of 127 mm (5 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Sterling in September

Expect highs of 14°C (57°F) in Sterling in September, with nights dropping to around 7°C (45°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

If you prefer enjoying temperate temperatures and rain-free days, July typically offers 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.