Hartley

What is the climate like in Hartley?

The best time to visit Hartley is typically June – September, with trip comfort peaking in July (7.2/10). Hartley is warmest in July, when daily highs average 72°F (22°C), and coolest in January, when lows fall to about 37°F (3°C). The wettest month is typically October and the driest is April; the year sees roughly 28 in (699 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in July (7.2/10)
• Warmest monthJuly — average high 72°F (22°C)
• Coolest monthJanuary — average low 37°F (3°C)
• Wettest monthOctober (2.8 in (70 mm))
• Driest monthApril (1.8 in (45 mm))
• Annual precipitation28 in (699 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromWisley, 15 km away (1904-2026)