Boulder, Colorado Weather:
Thursday, June 18, 2026
Partly Sunny with Showers
Day 82°
Night 55°
Precipitation 68 %
Wind 5 mph
UV Index (0 - 11+) 10
Weather Forecast History
Last Year's Weather on This Day (June 18, 2025)
Sunny Weather

Day

82°

Night

59°

Wind

4 mph

UV Index

12

Precipitation

0 %