Guanella Passwildflowers
Out of season: the next wildflowers season is in 2027.
Right now in Guanella Pass · September
- Brainard Lake gate open · Jun–Oct
260days to the next wildflowers seasonJun 15–Aug 10, Two Forest Service alpine viewing areas: Mount Goliath mid-June through July, Berthoud Pass late June to early August
Next 7 days
- Frost likely · low 28°FTonight, Tuesday Night, Wednesday Night, Thursday Night, Friday Night, Saturday Night, Sunday Night
- Rain or snow likely · up to 87% chanceToday, Tonight, Tuesday, Tuesday Night, Wednesday
National Weather Service forecast, issued Mon 2:46 AM (Eastern). Frost: a low of 36°F or less; wind: 20 mph or more; rain: 60% chance or more.
Arapaho and Roosevelt National Forests through the year
- Boulder Canyon raptor nesting closuresFeb–Jul
- Brainard Lake gate openNowJun–Oct
- Alpine wildflowersJun–Aug
- Brainard Lake ski and snowshoe seasonNov–Apr
Best spots around Arapaho and Roosevelt National Forests
- Mount Goliath (Dos Chappell Nature Center)Roadside alpine wildflowers on a garden with only about 40 frost-free days a year
- Berthoud Pass TrailheadOn the Continental Divide at 11,307 ft, about 1.5 hours west of Denver
How we know
National Weather Service forecast and alerts (opens in a new tab) (Sep 28) · US Forest Service, Celebrating Wildflowers: Mt. Goliath - Mt. Evans Viewing Area (Arapaho National Forest) (opens in a new tab) (Sep 27) · US Forest Service, Celebrating Wildflowers: Berthoud Pass Trailhead (Arapaho National Forest) (opens in a new tab) (Sep 27) · US Forest Service, Brainard Lake Recreation Area (opens in a new tab) (Sep 27) · US Forest Service, Boulder Canyon (opens in a new tab) (Sep 27)
Questions people ask
When is peak wildflowers in Arapaho and Roosevelt National Forests in 2027?
Two Forest Service alpine viewing areas: Mount Goliath mid-June through July, Berthoud Pass late June to early August: Jun 15–Aug 10. That's general timing for this place, not a peak date or a forecast.
Is it blooming in Arapaho and Roosevelt National Forests right now?
Not now: the wildflowers season is over for this year. The next one starts in about 260 days (Jun 15–Aug 10, Two Forest Service alpine viewing areas: Mount Goliath mid-June through July, Berthoud Pass late June to early August).
When is the best time?
Mount Goliath from mid-June through the end of July; the Berthoud Pass trailhead area from late June to early August.Sources: US Forest Service, Celebrating Wildflowers: Mt. Goliath - Mt. Evans Viewing Area (Arapaho National Forest) ↗ (opens in a new tab), US Forest Service, Celebrating Wildflowers: Berthoud Pass Trailhead (Arapaho National Forest) ↗ (opens in a new tab)
Are there guided walks?
The Denver Botanic Gardens leads garden explorations at Mount Goliath several times a week in summer.Source: US Forest Service, Celebrating Wildflowers: Mt. Goliath - Mt. Evans Viewing Area (Arapaho National Forest) ↗ (opens in a new tab)
What about the weather?
Afternoon thunderstorms with lightning, hail or snow are common at Berthoud Pass, and temperatures drop fast.Source: US Forest Service, Celebrating Wildflowers: Berthoud Pass Trailhead (Arapaho National Forest) ↗ (opens in a new tab)
Where are the best spots in Arapaho and Roosevelt National Forests?
Mount Goliath (Dos Chappell Nature Center): roadside alpine wildflowers on a garden with only about 40 frost-free days a year; Berthoud Pass Trailhead: on the Continental Divide at 11,307 ft, about 1.5 hours west of Denver.
Are there closures or permits to know about in Arapaho and Roosevelt National Forests?
Boulder Canyon raptor nesting closures (Feb–Jul).
What is Arapaho and Roosevelt National Forests like through the year?
Brainard Lake gate open (Jun–Oct), Brainard Lake ski and snowshoe season (Nov–Apr), Boulder Canyon raptor nesting closures (Feb–Jul) and Alpine wildflowers (Jun–Aug).