Casper

What is the climate like in Casper?

The best time to visit Casper is typically June – September, with trip comfort peaking in July (8.8/10). Casper is warmest in July, when daily highs average 87°F (31°C), and coolest in January, when lows fall to about 12°F (-11°C). The wettest month is typically May and the driest is July; the year sees roughly 17 in (421 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in July (8.8/10)
• Warmest monthJuly — average high 87°F (31°C)
• Coolest monthJanuary — average low 12°F (-11°C)
• Wettest monthMay (2.6 in (67 mm))
• Driest monthJuly (0.5 in (13 mm))
• Annual precipitation17 in (421 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromCasper-natrona Co AP, 14 km away (1948-2026)