Idyllwild & Mount San Jacinto, CA

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Tahquitz Rock, Idyllwild, CA
Tahquitz Rock, Idyllwild, CA - inkknife_2000 (7.5 million views +), CC BY-SA 2.0, via Wikimedia Commons

Today’s Forecast:

🌤
73°F
High: 73° | Low: 64°
Current Temperature
Station: E9981
Observed at: 8:15 pm CDT on 9/26/26
Wind: 0 mph | Humidity: 24%

Tonight:Mostly cloudy, with a low around 64. North wind 0 to 5 mph.
Sunday:Mostly cloudy, with a high near 72. West wind around 5 mph.
Sunday Night:A chance of rain showers after 11pm. Mostly cloudy, with a low around 59. West wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

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Today’s Report:

🥾 Hiking

Excellent
  100 /100

Excellent for hiking. High near 72°F. Low rain risk (10%).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for hiking. High near 67°F. Low rain risk (25%). Light wind (10 mph).

⛺ Camping

Excellent
  100 /100

Excellent for camping. High near 72°F. Low rain risk (10%).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for camping. High near 67°F. Low rain risk (25%). Light wind (10 mph).

🚲 Biking

Excellent
  100 /100

Excellent for biking. High near 72°F. Low rain risk (10%).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 96/100
Excellent for biking. High near 67°F. Risk of rain (25%). Light wind (10 mph).

About Idyllwild & Mount San Jacinto

Idyllwild & Mount San Jacinto is an outdoor-planning page for Idyllwild, San Jacinto high country, and tram-access areas. It has a distinct purpose centered on sharp desert-to-mountain changes, snow, cold nights, thunderstorms, smoke, and road access, with the forecast used to choose the safest and most comfortable version of the day.

Make the Most of a Idyllwild & Mount San Jacinto Day

Start by comparing conditions across Idyllwild, Humber Park, and the rest of the coverage area. Choose among hiking, camping, biking based on wind, precipitation, temperature, visibility, water or trail conditions, road access, smoke, and available daylight.

Weather Tips for Idyllwild & Mount San Jacinto

  • Conditions around Idyllwild, San Jacinto high country, and tram-access areas can differ sharply from nearby towns; sharp desert-to-mountain changes, snow, cold nights, thunderstorms, smoke, and road access are the main planning variables.
  • For camping, confirm overnight lows, wind, precipitation, fire restrictions, campground access, and how quickly shelter or services can be reached.
  • Check elevation-specific forecasts, snow and ice, chain controls, seasonal roads, cold nights, thunderstorms, wildfire smoke, and shoulder-season closures.
  • Crowds and parking can narrow the useful weather window, so arrive early and keep a lower-commitment nearby option.

Nearby Towns and Areas

This page covers Idyllwild, San Jacinto high country, and tram-access areas. It can also be useful when planning outdoor time near:

  • Humber Park
  • Mount San Jacinto
  • Pine Cove
  • Tahquitz Peak
  • Long Valley
  • Palm Springs Aerial Tramway

Plan Around the Conditions

Use the forecast to choose the best version of Idyllwild & Mount San Jacinto rather than forcing one itinerary. A shorter route, earlier launch, sheltered shoreline, lower-elevation trail, or town-based backup can preserve the day when conditions change.

7-Day Forecast for Idyllwild & Mount San Jacinto

🌤
73°F
High: 73° | Low: 64°
Current Temperature
Station: E9981
Observed at: 8:15 pm CDT on 9/26/26
Wind: 0 mph | Humidity: 24%
Sun ☁
72° 59°
10%
Mon 🌧
68° 56°
25%
Tue ☀
72° 62°
3%
Wed ☀
78° 64°
0%
Thu ☀
80° 64°
0%
Fri ☀
80° 65°
0%
Sat ☀
80° --°
1%

7-Day High Temperature Trend

72° Sun 68° Mon 72° Tue 78° Wed 80° Thu 80° Fri 80° Sat

7-Day Low Temperature Trend

59° Sun 56° Mon 62° Tue 64° Wed 64° Thu 65° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 100 Sun 100 Mon 100 Tue 80 Wed 70 Thu 70 Fri 70 Sat
Forecast data from the National Weather Service  |  Last Updated: September 26, 2026 11:20 pm CDT

Idyllwild & Mount San Jacinto Weather by Season

Winter

At Idyllwild & Mount San Jacinto, winter brings snow, ice, chain controls, closed roads, and limited trail access. Conditions vary sharply by elevation, and cold nights or storms can make short trips more serious than valley forecasts suggest.

Spring

Around Idyllwild, San Jacinto high country, and tram-access areas, spring is a long shoulder season with lingering snow, mud, icy mornings, and roads or campgrounds opening in stages. Lower trails may be usable well before the high country.

Summer

For sharp desert-to-mountain changes, snow, cold nights, thunderstorms, smoke, and road access, summer opens the broadest access, but high-elevation sun, cold nights, afternoon thunderstorms, wildfire smoke, and fire restrictions remain central. Finish exposed ridges before storms build.

Fall

Near Idyllwild and the surrounding area, early fall can provide crisp hiking and biking weather, followed by freezing nights and the first snow. Services and roads may close before lower elevations feel wintry.

Key Climate Data Points

  • Warmest months: July and August at higher elevations.
  • Coolest months: December through February.
  • Wettest season: November through April, much of it as snow.
  • Driest season: July through September.
  • Best outdoor window: Mid-summer through early fall after roads open and before persistent snow.