Weather data last updated: August 01, 2026 at 07:47 AM UTC
Mount Diablo Summit Trail — 68/100
Caution
Manageable with preparation. Plan accordingly.
- Weather Comfort: 18/40
- Safety Risk: 20/30
- Seasonal Match: 20/20
- Daylight Window: 10/10
Best day this week: Thursday, Jul 30 — Score 68/100 (Caution)
7-Day Forecast & Hiking Suitability
| Date | High/Low | Rain | Wind | Score | Rating |
|---|---|---|---|---|---|
| 2026-07-30 | 78°F / 65°F | 2% | 14 mph | 68 | Caution |
| 2026-07-31 | 82°F / 65°F | 1% | 11 mph | 68 | Caution |
| 2026-08-01 | 85°F / 69°F | 0% | 12 mph | 63 | Caution |
| 2026-08-02 | 89°F / 53°F | 0% | 11 mph | 63 | Caution |
| 2026-08-03 | 95°F / 47°F | 0% | 8 mph | 56 | Caution |
| 2026-08-04 | 92°F / 49°F | 0% | 8 mph | 63 | Caution |
| 2026-08-05 | 90°F / 46°F | 0% | 8 mph | 63 | Caution |
Trail Information
- Location: Mount Diablo State Park, CA
- Length: 6.5 miles
- Elevation: 3849 ft
- Difficulty: Moderate
Frequently Asked Questions
What is the best time to hike Mount Diablo Summit Trail?
Review our 7-day suitability scores and seasonal match rating. Elevation and CA climate vary significantly by month.
Is Mount Diablo Summit 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 Diablo Summit 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.