Weather data last updated: August 01, 2026 at 07:47 AM UTC
Mount Lemmon Trail — 60/100 Caution
Manageable with preparation. Plan accordingly.
- Weather Comfort: 10/40
- Safety Risk: 20/30
- Seasonal Match: 20/20
- Daylight Window: 10/10
Mount Lemmon Trail in Arizona is a moderate-rated route that demands respect — 5.0 miles with significant elevation change up to 9,157 ft. Our daily Suitability Score helps you pick the window with the best conditions, but this trail requires self-sufficiency and solid navigation skills.
Today’s Conditions at a Glance
High-Elevation Considerations
Summit temperatures can feel 7°F cooler than the trailhead (roughly 3.5°F per 1,000 ft gained). Above 8,000 ft, watch for altitude sickness symptoms: headache, nausea, and shortness of breath. Descend if symptoms worsen.
- Start early to avoid afternoon storms on exposed ridges
- Pack insulating layers even in summer
- Carry extra water — dehydration accelerates at altitude
Forest Trail Notes
Forest trails stay muddy longer after rain. Tick season peaks April–July in Arizona — check yourself after the hike. Tree cover reduces wind chill but also limits visibility of approaching storms.
Seasonal Guide
- Spring: Spring (Arizona): Snow may linger above 7,157 ft through May. Muddy lower sections are common. Layers essential — mornings can be near freezing.
- Summer: Summer: Start before 8 AM to beat heat and afternoon thunderstorms. Afternoon temps at 9,157 ft can still be comfortable, but exposed sections get hot quickly. Lightning risk peaks on exposed ridges after noon.
- Fall: Fall: Often the best hiking season — stable weather, fewer crowds. Shorter days mean plan turnaround times carefully after September.
- Winter: Winter: Limited daylight and potential snow/ice above 6,157 ft. Check our daily score; many trails remain accessible with traction devices.
What to Pack
- Sturdy hiking boots with ankle support
- 2+ liters of water (more in heat or for long routes)
- Snacks and electrolytes
- Sunscreen, hat, and sunglasses
- First-aid kit and whistle
- Fully charged phone + offline map backup
- Insulating mid-layer and waterproof shell
7-Day Forecast & Hiking Suitability
| Date | High/Low | Rain | Wind | Score | Rating |
|---|---|---|---|---|---|
| 2026-07-30 | 72°F / 56°F | 3% | 12 mph | 60 | Caution |
| 2026-07-31 | 75°F / 56°F | 3% | 12 mph | 60 | Caution |
| 2026-08-01 | 75°F / 59°F | 6% | 15 mph | 60 | Caution |
| 2026-08-02 | 77°F / 59°F | 14% | 14 mph | 60 | Caution |
| 2026-08-03 | 80°F / 54°F | 17% | 21 mph | 43 | High Risk |
| 2026-08-04 | 79°F / 60°F | 38% | 13 mph | 40 | High Risk |
| 2026-08-05 | 77°F / 52°F | 44% | 14 mph | 40 | High Risk |
Trail Information
- Location: Coronado National Forest, AZ
- Length: 5.0 miles
- Elevation: 9157 ft
- Difficulty: Moderate
Frequently Asked Questions
What is the best time to hike Mount Lemmon Trail?
Review our 7-day suitability scores and seasonal match rating. Elevation and AZ climate vary significantly by month.
Is Mount Lemmon Trail safe to hike today?
Check today’s Suitability Score above. This is informational only — always confirm with official park sources before hiking.
What should I wear on Mount Lemmon Trail?
Plan layers based on forecast highs/lows and elevation. Waterproof gear if rain probability exceeds 40%.
Disclaimer: For informational purposes only. Not professional outdoor safety advice. Always check official NPS/USFS sources before hiking. Weather data by Open-Meteo. Trail data © OpenStreetMap contributors.