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Weather data provided by National Weather Service (weather.gov). Conditions can change rapidly in alpine terrain — always check before you go.
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The Trip Builder reads your route, the forecast, and your existing gear — then closes the gaps in minutes.
Live trail data
Loading live weather for Colorado’s most-hiked zones…
Live trail data
Live weather for Colorado’s most-hiked zones — updated directly from Weather.gov.
Forecasts refresh every 15 minutes from the National Weather Service points API. Alpine conditions can change in 20 minutes — always verify before you go.
Updated 10:35 PMRefreshes every 15 min
11,600–14,060 ft
14er · Guanella Pass · Clear Creek County
Slight Chance Snow Showers
before 4pm
Tonight
33°F
Partly Cloudy
Tomorrow
57°F
Mostly Sunny then Showers And Thunderstorms Likely
after noon
14er rule: summit before noon without exception. Lightning is fatal above treeline.
6,800–8,500 ft
Flatirons · Chautauqua · Green Mountain
Sunny
Tonight
53°F
Partly Cloudy
Tomorrow
74°F
Mostly Sunny then Chance Showers And Thunderstorms
Exposed ridge above Flatirons — afternoon lightning from June–Aug.
6,720–14,115 ft
Barr Trail · Manitou Incline · Garden of the Gods
Mostly Sunny
Tonight
31°F
Partly Cloudy
Tomorrow
48°F
Sunny then Chance Snow Showers
after noon
Cog rail and highway access don't soften the altitude. 13 miles up Barr Trail; summer storms hit by 1 PM.
10,400–13,500 ft
Lake Isabelle · Mitchell Lake · CDT access
Slight Chance Rain And Snow Showers
before 3pm
Tonight
34°F
Mostly Clear
Tomorrow
57°F
Mostly Sunny then Chance Showers And Thunderstorms
Open alpine basin — no shelter once storms build. Start early.
8,500–12,183 ft
Bear Lake · Trail Ridge · Estes Park
Sunny
Tonight
37°F
Mostly Clear
Tomorrow
62°F
Mostly Sunny then Chance Showers And Thunderstorms
after noon
Fastest storm pattern in Colorado. Be below treeline by noon.
9,000–12,040 ft
Eagle's Nest · Mesa Cortina · Summit County
Sunny
Tonight
36°F
Mostly Clear
Tomorrow
73°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
Summit County storms can build in 20 minutes. Remote terrain.
9,580–14,163 ft
Maroon Bells · Crater Lake · Pyramid Peak
Sunny
Tonight
27°F
Mostly Clear
Tomorrow
46°F
Sunny then Slight Chance Snow Showers
after noon
Maroon Bells rock crumbles where you grip it. Storms build fast — be off ridges by noon.
10,000–14,440 ft
Mt. Elbert · Mt. Massive · La Plata Peak
Sunny
Tonight
28°F
Mostly Clear
Tomorrow
51°F
Mostly Sunny then Slight Chance Snow Showers
after 3pm
Highest peak in the state — the approach is forgiving, the summit ridge is not. 14er rule applies.
9,545–14,158 ft
Mt. Sneffels · Yankee Boy Basin · Blue Lakes
Sunny
Tonight
28°F
Mostly Clear
Tomorrow
50°F
Sunny
San Juan monsoons hit harder than the Front Range — by 11 AM in summer. Sneffels approach is loose top-to-bottom.