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Lost Lake Day Use Area

Lytle Creek, California · San Bernardino County · Facility

Lost Lake is a unique natural lake created by the San Andreas Fault and is fed by deep natural springs.Although the lake has not been stocked with fish for many years, people still try their luck and toss a line in. Many visit the lake to picnic along the banks.There are also opportunities for bird watching.

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34.27225, -117.46606
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5-Day Forecast

Weather at Lost Lake Day Use Area

Live forecast for the park. Plan your visit accordingly.

Avg High84°F
Avg Low56°F
Peak Rain Chance0%
Humidity39%
UV (avg)9
Air Quality83 · Moderate
Today
☁️
Overcast
79°/50°
🌬 16mph
5:39 AM7:55 PM
Sun
☀️
Clear
86°/61°
🌬 17mph
5:39 AM7:56 PM
Mon
☀️
Clear
83°/55°
🌬 20mph
5:38 AM7:56 PM
Tue
☀️
Clear
85°/54°
🌬 11mph
5:38 AM7:57 PM
Wed
☀️
Clear
88°/58°
🌬 11mph
5:38 AM7:57 PM

Forecast data © Open-Meteo. Refreshed every 6 hours. Always check the most recent forecast before heading out.

About Lost Lake Day Use Area

Lost Lake is a unique natural lake created by the San Andreas Fault and is fed by deep natural springs.Although the lake has not been stocked with fish for many years, people still try their luck and toss a line in. Many visit the lake to picnic along the banks.There are also opportunities for bird watching.

Plan Your Visit to Lost Lake Day Use Area

Heading to Lost Lake Day Use Area? A few things to know before you go:

  • Reservations: popular sites fill up fast — check Recreation.gov 6 months in advance
  • Fees: day-use and camping fees vary; check current rates on the official park page
  • Trash & pack-out: follow Leave No Trace principles
  • Wildlife: store food in bear boxes where provided; never feed wildlife
  • Weather: the 5-day forecast above is updated every 6 hours; verify just before you go

Frequently Asked Questions

Do I need a reservation for Lost Lake Day Use Area?

No central reservation system listed for Lost Lake Day Use Area. Check the official page (https://www.recreation.gov/camping/campgrounds/249699) for the latest entry policy and availability.

How do I get to Lost Lake Day Use Area?

Swarthout Canyon Road, west of Old Cajon Blvd in Cajon Pass.