New Castle

What is the climate like in New Castle?

The best time to visit New Castle is typically August – October, with trip comfort peaking in September (7.2/10). New Castle is warmest in July, when daily highs average 83°F (29°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically May and the driest is November; the year sees roughly 45 in (1144 mm) of precipitation.

• Best time to visitAugust – October — comfort peaks in September (7.2/10)
• Warmest monthJuly — average high 83°F (29°C)
• Coolest monthJanuary — average low 23°F (-5°C)
• Wettest monthMay (4.9 in (124 mm))
• Driest monthNovember (3.0 in (75 mm))
• Annual precipitation45 in (1144 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromNew Castle 3 Sw, 4 km away (1949-2026)