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State park

Collier Memorial State Park

Oregon

About

Collier Memorial State Park is a state park in southern Oregon, about 4.6 miles from the town of Chiloquin. It sits within the Chiloquin Ranger District of the Fremont-Winema National Forest, and the land is managed as city land. Summer is the most comfortable time to visit. Typical averages from a nearby weather station show July highs around 85°F with lows near 42°F, and only a few wet days a month from June through August. Winter is cold and snowy, with highs near 39°F and about six snow days in January. Williamson River Campground and the Williamson River Cliffs climbing area are both about 2.5 miles away. The Williamson River fishing stretch is about 4.2 miles off, and Jackson F Kimball Campground is about 8.5 miles away.

Park size

599 acres

Inside this park

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Location

Collier Memorial State Park

Oregon

Data source: USGS PAD-US 4.1 (Protected Areas Database, public domain)

Facts about this place

When to go

Best time to go: May–Sep. The mildest months here, with typical highs of 66–85°F and lows of 33–42°F.

Typical monthly averages (not a forecast) from the Chiloquin 12 Nw (Fort Klamath), OR weather station, 7.5 mi away. High / low in °F, and days with snow.

  1. Jan39° high19° low6 days with snow
  2. Feb44° high22° low5 days with snow
  3. Mar50° high25° low4 days with snow
  4. Apr57° high28° low2 days with snow
  5. May66° high33° low
  6. Jun75° high37° low
  7. Jul85° high42° low
  8. Aug84° high41° low
  9. Sep77° high34° low
  10. Oct64° high27° low
  11. Nov48° high24° low3 days with snow
  12. Dec39° high19° low7 days with snow

Source: NOAA NCEI U.S. Climate Normals 1991–2020

Where it is

Nearest town
Chiloquin, Oregon · 4.6 mi
Managed by
City Land

Source: USFS EDW boundaries; USGS PAD-US 4.1; USGS GNIS populated places

Conditions

Active alerts for Chiloquin Ranger District as of Oct 9, 2026:

Source: USFS forest alerts

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)

Is Collier Memorial State Park open right now?

No closures listed

The Forest Service lists no closures for Fremont-Winema National Forest.

As of · Source: USFS · Fremont-Winema National Forest. Agencies don't list every closure — check before you go.

Best time to visit Collier Memorial State Park

Best months: May–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    39° / 19°

    13 wet · 6 snow

  2. Feb

    44° / 22°

    11 wet · 5 snow

  3. Mar

    50° / 25°

    11 wet · 4 snow

  4. Apr

    57° / 28°

    10 wet · 2 snow

  5. May

    66° / 33°

    8 wet

  6. Jun

    75° / 37°

    4 wet

  7. Jul

    85° / 42°

    3 wet

  8. Aug

    84° / 41°

    2 wet

  9. Sep

    77° / 34°

    4 wet

  10. Oct

    64° / 27°

    7 wet

  11. Nov

    48° / 24°

    12 wet · 3 snow

  12. Dec

    39° / 19°

    14 wet · 7 snow

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Chiloquin 12 Nw (Fort Klamath), OR, 7.5 mi away at 4,180 ft. We don't have this place's elevation, so higher spots nearby can run cooler. Source: NOAA NCEI U.S. Climate Normals 1991–2020.