Olean

What is the climate like in Olean?

The best time to visit Olean is typically July, the year's most comfortable month (6.4/10). Olean is warmest in July, when daily highs average 79°F (26°C), and coolest in January, when lows fall to about 19°F (-7°C). The wettest month is typically April and the driest is November; the year sees roughly 47 in (1194 mm) of precipitation.

• Best time to visitJuly — the year's comfort peak (6.4/10)
• Warmest monthJuly — average high 79°F (26°C)
• Coolest monthJanuary — average low 19°F (-7°C)
• Wettest monthApril (4.6 in (118 mm))
• Driest monthNovember (3.4 in (85 mm))
• Annual precipitation47 in (1194 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromOlean, 2 km away (1927-2026)