Gunbarrel

What is the climate like in Gunbarrel?

The best time to visit Gunbarrel is typically June – October, with trip comfort peaking in September (7.9/10). Gunbarrel is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 16°F (-9°C). The wettest month is typically May and the driest is December; the year sees roughly 27 in (687 mm) of precipitation.

• Best time to visitJune – October — comfort peaks in September (7.9/10)
• Warmest monthJuly — average high 83°F (28°C)
• Coolest monthJanuary — average low 16°F (-9°C)
• Wettest monthMay (5.0 in (126 mm))
• Driest monthDecember (1.0 in (26 mm))
• Annual precipitation27 in (687 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromBoulder, 11 km away (1893-2026)