Boulder in April
Good time to visit
April teases summer with warm days but keeps you guessing with afternoon storms. The city shakes off winter hibernation as students return and outdoor enthusiasts emerge.
Weather
April delivers Boulder's first real spring warmth with trees budding across town. Rain showers arrive most afternoons but clear quickly. Snow still hits the mountains regularly while the city stays green.
18°C high3°C low8 rain days
Crowds & Cost
moderate crowds
~$145/day average
Events & Festivals
- •Boulder Creek Festival preparations begin
April Tips
- •Afternoon thunderstorms roll in fast - morning hikes work best
- •CU graduation crowds hit restaurants and hotels mid-month
- •Mountain trails stay muddy from snowmelt until May
All Months
May through October offers Boulder's best weather, with July and August bringing afternoon thunderstorms that clear quickly. Spring arrives late here – April can still see snow, but wildflowers bloom through June. Summer temperatures hit the 80s during the day and drop to the 50s at night. Perfect hiking weather, but book accommodations early as this is peak season. Fall delivers Boulder's most spectacular scenery. Aspen trees turn gold in the surrounding mountains, and September offers warm days with cool nights. October brings the first snow to high peaks but valley hiking remains excellent. Winter transforms Boulder into a different city. The town gets about 90 inches of snow annually, but sunny days melt it quickly on south-facing slopes. Cross-country skiing and snowshoeing replace hiking, and hotel rates drop significantly. January through March see temperatures ranging from 20-50°F. Spring skiing at nearby resorts runs through April. Avoid major CU football weekends in fall when hotel prices triple and restaurants require reservations weeks in advance.
Boulder Scores
Solo
8/10
Couples
6/10
Families
7/10
Adventure
9/10
Budget
6/10
Luxury
5/10
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