Boulder, Colorado Weather:
Wednesday, March 18, 2026
Cloudy Weather
Day 48°
Night 25°
Precipitation 42 %
Wind 12 mph
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)
Partly Sunny with Showers

Day

63°

Night

28°

Wind

15 mph

UV Index

5

Precipitation

60 %