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600–2,301 ft · MN🚗 Directions
North Shore of Lake Superior and the Sawtooth Mountains — Superior Hiking Trail corridor from Duluth to the Canadian border. Paper birch, quaking aspen, balsam fir, white spruce, northern white cedar, and sugar maple on the rugged volcanic bedrock. Lake effect moderates the climate. Exceptional birch bolete, chanterelle, and king bolete country; lobster mushrooms on spruce; morels following spring jack pine burns.
Updated Aug 27, 4:20 AM MT
# MN North Shore / Sawtooth – S Tier | August 27, 2026 This is a canonical flush window. Sustained soil temps at 66.6°F paired with seven consecutive days above threshold and locked-in volumetric water content (0.31 VWC) have triggered optimal fruiting across the full seasonal spectrum—zero limiting factors. King Boletes, Chanterelles, and Hen of the Woods anchor the tier, but the real value lies in the simultaneous readiness of wood-decay and late-summer specialists: Cauliflower Mushroom, Lobster Mushroom, and all your polypores are live. The low recent precipitation (0.32" in 7 days) is actually a feature here—soil moisture is stable and bioavailable, not waterlogged, which keeps the mycota aggressive and clean. Watch the next 72 hours for thermal creep. If soil temps breach 70°F without compensating moisture events, the window tightens fast on the cool-preferring species (Chanterelles, Hen of Woods). Boletes and polypores hold longer. **Hot tip:** Prioritize north-facing ravines and north aspects of mature hardwood stands—the thermal gradient will keep those cooler longer, extending Chanterelle and Hen of the Woods runs into early September while they're still prime.
Generated by Claude (Anthropic) from the structured weather, soil, and phenology data on this page. The LLM can misread edge cases — treat this as a starting hypothesis, not a guarantee. Always verify conditions on the ground before committing to a long drive.
Precip 7d
Log your find on iNaturalist to help the community and get expert ID assistance. Photos, location, and habitat notes all help with identification.
Superior National Forest
Superior National Forest
Superior National Forest
⚠ Road Access Notice
Always verify road access is public before following GPS directions to mountain areas. Many forest roads are seasonal, gated, or require 4WD. Dispersed camping follows USFS/BLM rules (typically 14-day limit). Check ranger district offices for current road and campground conditions.
0.32"
PRISM 4km · thru 08-25
Precip 14d
Observed precipitation from PRISM 4km gridded analysis, sampled at the region centroid through 2026-08-25. Used when no SNOTEL/SCAN station is mapped to this region.0.58"
PRISM 4km · thru 08-25
Soil Temp
67°F
SWE
Snow Water Equivalent — how much water is in the snowpack vs. normal. Declining SWE means snowmelt is adding moisture to the soil.0%
Drought
None
Snowmelt
complete
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 5/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 67°F, sustained 7/7 days above threshold, today 0.31 VWC, 7d avg 0.30 — moisture sustained)
Primordia readiness: Cold = mycelium dormant. Activating = soil warming, primordia building. Primed = 5+ sustained warm days at species threshold; fruiting imminent if moisture cooperates. Based on Schmidt 1983 / Mihail 2007.