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Bureau of Land Management CC BY-SA 4.0 Wikimedia Commons

Lost Forest Research Natural Area

Area
Lost Forest Research Natural Area Portland, OregonSalem, OregonEugene, OregonHillsboro, OregonGresham, OregonBendKlamath FallsAshlandLost Forest Research Natural Area
In this guide

Lost Forest Research Natural Area essentials

Hours: Open year-round (no formal hours)
Admission: Free (research natural area; National Forest regulations apply)
When to Go

Best Time to Visit Lost Forest Research Natural Area

Best in summer and early autumn for clear access and comfortable hiking conditions; winter can be snowy and restrict access.

Summer
June-August · 10-25°C (50-77°F)
Warm and the most accessible time; wildflowers may still be present at higher elevations.
Autumn
September-October · 0-15°C (32-59°F)
Clear skies and cooler temps make for excellent hiking conditions; fall colours in pockets.

Weather & Climate near Lost Forest Research Natural Area

Climate

Lost Forest Research Natural Area's climate is classified as Cold Semi-Arid - Cold Semi-Arid climate with mild summers (peaking in July) and freezing winters (coldest in December). Temperatures range from -8°C to 29°C. Very dry conditions with minimal rainfall.

Air Quality: AQI 30 Good
Temperature & Rainfall
Temperature Range
29°
Warmest Month
-8°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -7° - 4° -5° 25 mm - - 3.0 m/s - -
February - -5° - 7° -3° 15 mm - - 3.2 m/s - -
March - -4° - 10° 0° 19 mm - - 3.5 m/s - -
April - -2° - 14° 3° 17 mm - - 3.6 m/s - -
May - 1° - 19° 8° 26 mm - - 3.5 m/s - -
June - 5° - 24° 14° 24 mm - - 3.4 m/s - -
July - 8° - 29° 19° 13 mm - - 3.3 m/s - -
August - 8° - 29° 18° 17 mm - - 3.1 m/s - -
September - 3° - 25° 14° 13 mm - - 2.9 m/s - -
October - -1° - 18° 7° 18 mm - - 2.9 m/s - -
November - -4° - 9° -1° 30 mm - - 3.0 m/s - -
December - -8° - 4° -6° 29 mm - - 3.0 m/s - -
Getting There & Around

How to Get to Lost Forest Research Natural Area

The research area is accessed via forest roads and trailheads managed by the local National Forest office. Expect a drive on secondary roads followed by a moderate hike; check the Forest Service for access details and seasonal advisories.

Tips for Visiting Lost Forest Research Natural Area

  • Wear sturdy footwear - the area includes rocky ridgelines and old-growth stands that require careful footing.
  • This is a research natural area with limited facilities; stick to established paths and avoid collecting specimens.
  • Check with the local Forest Service office for seasonal access and any trail advisories.