Big Bear Lake, CA

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Harbor area near Big Bear Lake with road and docks
Harbor Area Near Big Bear Lake with Roads and Docks - BigBearCabins, CC BY-SA 4.0, via Wikimedia Commons

Today’s Forecast:

🌤
°F
High: 66° | Low: 46°
Current Temperature
Station: E9869
Observed at: 8:30 pm CDT on 9/26/26
Wind: 0 mph | Humidity: %

Tonight:Mostly cloudy, with a low around 46. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday:A slight chance of rain showers after 5pm. Partly sunny, with a high near 66. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday Night:A slight chance of rain showers. Mostly cloudy, with a low around 40. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

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Today’s Report:

⛵ Boating

Use Caution
  43 /100

Use Caution for boating. High near 66°F. Low rain risk (16%). Breezy winds (15 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 42/100
Use Caution for boating. High near 62°F. Low rain risk (15%). Breezy winds (15 mph).

🥾 Hiking

Excellent
  100 /100

Excellent for hiking. High near 66°F. Low rain risk (16%). Light wind (15 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for hiking. High near 62°F. Low rain risk (15%). Light wind (15 mph).

🚲 Biking

Excellent
  97 /100

Excellent for biking. High near 66°F. Low rain risk (16%). Breezy winds (15 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 97/100
Excellent for biking. High near 62°F. Low rain risk (15%). Breezy winds (15 mph).


About Big Bear Lake

Big Bear Lake is an outdoor-planning page for Big Bear Valley and the lake shoreline. It has a distinct purpose centered on snow and ice, lake wind, thunderstorms, high elevation, smoke, and fire restrictions, with the forecast used to choose the safest and most comfortable version of the day.

Make the Most of a Big Bear Lake Day

Start by comparing conditions across Big Bear Lake, Big Bear City, and the rest of the coverage area. Choose among boating, hiking, biking based on wind, precipitation, temperature, visibility, water or trail conditions, road access, smoke, and available daylight.

Weather Tips for Big Bear Lake

  • Conditions around Big Bear Valley and the lake shoreline can differ sharply from nearby towns; snow and ice, lake wind, thunderstorms, high elevation, smoke, and fire restrictions are the main planning variables.
  • Check wind, waves, current, tides where relevant, water temperature, and lightning before launching; keep a land-based alternative ready.
  • Check elevation-specific forecasts, snow and ice, chain controls, seasonal roads, cold nights, thunderstorms, wildfire smoke, and shoulder-season closures.
  • Air quality and wildfire smoke can shift quickly; shorten strenuous plans when visibility or breathing conditions worsen.

Nearby Towns and Areas

This page covers Big Bear Valley and the lake shoreline. It can also be useful when planning outdoor time near:

  • Big Bear City
  • Boulder Bay
  • Fawnskin
  • Snow Summit
  • Bear Mountain
  • Holcomb Valley

Plan Around the Conditions

Use the forecast to choose the best version of Big Bear Lake 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 Big Bear Lake

🌤
°F
High: 66° | Low: 46°
Current Temperature
Station: E9869
Observed at: 8:30 pm CDT on 9/26/26
Wind: 0 mph | Humidity: %
Sun 🌧
66° 40°
16%
Mon 🌧
63° 38°
15%
Tue ☀
67° 42°
6%
Wed ☀
75° 45°
0%
Thu ☀
77° 46°
0%
Fri ☀
76° 46°
0%
Sat ☀
76° --°
1%

7-Day High Temperature Trend

66° Sun 63° Mon 67° Tue 75° Wed 77° Thu 76° Fri 76° Sat

7-Day Low Temperature Trend

40° Sun 38° Mon 42° Tue 45° Wed 46° Thu 46° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 100 Sun 100 Mon 97 Tue 100 Wed 85 Thu 90 Fri 90 Sat
Forecast data from the National Weather Service  |  Last Updated: September 27, 2026 1:52 am CDT

Big Bear Lake Weather by Season

Winter

At Big Bear Lake, winter brings snow, ice, chain controls, limited trail access, and very cold lake water. Storm wind and poor visibility can complicate mountain roads and shoreline plans.

Spring

Around Big Bear Valley and the lake shoreline, spring is a shoulder season with lingering snow, muddy trails, cold water, and ramps or campgrounds reopening gradually. Warm afternoons can be followed by freezing nights.

Summer

For snow and ice, lake wind, thunderstorms, high elevation, smoke, and fire restrictions, summer supports boating, hiking, and biking, but afternoon lake wind, high-elevation sun, thunderstorms, smoke, traffic, and fire restrictions require attention. Start water plans early.

Fall

Near Big Bear Lake and the surrounding area, early fall offers cooler trails and quieter lake mornings, followed by freezing nights and possible early snow. Seasonal services may close before winter storms become frequent.

Key Climate Data Points

  • Warmest months: July and August.
  • Coolest months: December through February.
  • Wettest season: November through April.
  • Driest season: July through September.
  • Best outdoor window: Late June through early fall after snow and access checks.