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350–1,065 ft · IL🚗 Directions
Shawnee National Forest in southern IL. Oak-hickory forest with tulip poplar and sycamore in drainages. Sandstone bluffs create unique microclimates. Old apple orchards scattered throughout. Among the best morel territory in IL.
Updated May 29, 4:09 AM MT
# Shawnee NF – 29 May 2026 | S-Tier This is a perfect storm: 71°F soil, sustained moisture at 0.29 VWC over two weeks, zero drought stress, and you're staring at 30 species in full flush. The elevation sweet spot (350–1,065 ft) and May timing put you smack in the overlap between spring ephemerals and early summer wood-decayers. Half-free morels are bottoming out, but the real money is in the polypores and jelly fungi—Turkey Tail, Artist's Conk, and the Tinder family are at peak vigor right now. The only brake is moderate desiccation risk: soil moisture is abundant *now*, but without rain in the next 48–72 hours, you'll lose the soft-fruiting advantage by early June. That window tightens fast in late May. Watch the forecast obsessively. A dry spell kills your gelatinous species (Jelly Ear, Wood Ear, Snow Fungus) in 3–4 days; wood-decayers hold longer but fruit density drops. The morel tail end is already fading—don't waste time there. **Hot tip:** Hit the ash and cottonwood riparian corridors today or tomorrow for half-frees and Eyelash Cups before soil temp climbs past 73°F and dries the litter layer out.
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
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⚠ 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.
1.11"
PRISM 4km · thru 05-27
Precip 14d
Observed precipitation from PRISM 4km gridded analysis, sampled at the region centroid through 2026-05-27. Used when no SNOTEL/SCAN station is mapped to this region.2.39"
PRISM 4km · thru 05-27
Soil Temp
71°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 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — moisture sustained)
All conditions met (soil 71°F, sustained 7/7 days above threshold, today 0.26 VWC, 7d avg 0.29 — 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.