Thornhill

What is the climate like in Thornhill?

The best time to visit Thornhill is typically July, the year's most comfortable month (6.5/10). Thornhill is warmest in July, when daily highs average 68°F (20°C), and coolest in January, when lows fall to about 38°F (3°C). The wettest month is typically December and the driest is April; the year sees roughly 45 in (1143 mm) of precipitation.

• Best time to visitJuly — the year's comfort peak (6.5/10)
• Warmest monthJuly — average high 68°F (20°C)
• Coolest monthJanuary — average low 38°F (3°C)
• Wettest monthDecember (5.0 in (126 mm))
• Driest monthApril (2.5 in (64 mm))
• Annual precipitation45 in (1143 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromYeovilton, 71 km away (1964-2026)