Tillamook Mushroom Calendar

Tillamook sits in the Coast Range and one of the wetter corners of the region — about 89.8 inches of rain a year, most of it falling in the cool months from fall into spring. The ground warms and reaches early fruiting potential around March, by which point the average last frost (Apr 22) has usually passed. Through summer, localized storms can set off scattered fruitings, but widespread flushes are rare until more consistent rain returns in August. The first frosts around Oct 21 eventually close the main season, though hardy cool-season species hang on.

Best months August, October, and November
Ground warms ~March
Frost-free Apr 22 – Oct 21
Annual rain 89.8"
Driest July
Species tracked 9

What Fruits When Near Tillamook

JFMAMJJASONDMorelKing BoleteMatsutakeChanterelleHedgehogOysterLobsterThe PrinceShaggy Mane

Shading shows when each species typically fruits within about 10 miles, not abundance. Based on iNaturalist observation trends.

The Shape of the Season

All species combined — local observations within about 10 miles, by month.

Weather Through the Year

Average daily high–low (°F)

Average monthly precipitation (inches)

The Forest Around Tillamook

Dominant tree species within about 10 km — the hosts that shape which mushrooms grow here.

  • Western Hemlock30.2%
  • Sitka Spruce27.7%
  • Red Alder22.5%
  • Douglas-fir19%
  • Bigleaf Maple0.6%

Species to Know Near Tillamook

Lobster Lobster Peaks in August, September, and October Photo: Drew Henderson, Mushroom Observer (CC BY-SA) King Bolete King Bolete Peaks in November Shaggy Mane Shaggy Mane Peaks in October and November Photo: Jeremy Collison (CC BY-NC)

Common Questions

When is mushroom season in Tillamook?

Near Tillamook, most mushroom activity arrives with the fall rains. The strongest months in the local observation record are August, October, and November.

When do morels fruit near Tillamook?

Morel reports near Tillamook peak in June. Timing tracks soil temperature, so south-facing slopes and lower elevations start earlier and higher ground runs later.

What mushrooms grow near Tillamook?

9 species show up in the observation record within about 10 miles of Tillamook, including Morel, King Bolete, Matsutake, Chanterelle, Hedgehog, Oyster, Lobster, The Prince. The calendar above shows when each one typically fruits.

Want live conditions instead of climatology? The Forayz map layers soil moisture, soil temperature, snow cover, and recent burns over the same area.

Nearby Calendars in Oregon

Climate normals: NOAA NCEI U.S. Climate Normals (1991–2020). Season-onset timing is an air-temperature proxy, not a soil reading.