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2,500–9,157 ft · AZ🚗 Directions
Santa Catalina Mountains looming above Tucson — Coronado National Forest. Sonoran Desert at the base, transitioning up through chaparral, pine-oak woodland, ponderosa pine, and Douglas fir at Mt Lemmon\u2019s summit. Summerhaven for access. Monsoon season (July-September) produces king boletes, chanterelles, and lobsters up high; summer drive from Tucson saves 30°F.
Updated Oct 11, 5:16 AM MT
Mt Lemmon is rated Good for fruiting: soil sits at 64°F and has stayed above threshold all 7 of the last 7 days, and the 14-day total of 1.61" put real moisture into the duff and downed wood. Oyster, Honey, and Yellow-Gilled Gym (Gymnopilus) are all high-confidence, with soil moisture holding steady (0.21 VWC today against a 0.23 seven-day average). The limiting factor is desiccation risk. Only 0.16" fell in the last week, so the rain pulse is fading, and exposed south-facing slopes and open woodland will dry out first. Watch the moisture trend over the next few days: if VWC slips well below 0.20 without new rain, flushes will stall and fruitbodies already up will dry fast. Snowpack is irrelevant here, since SWE is 0% and melt is complete, so any new moisture will have to come from rain. Hot tip: Focus on shaded north-facing drainages and the higher-elevation mixed conifer and oak stands, and check rotting logs and stumps, where moisture lingers longest and all three species are most likely to be holding.
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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Coronado National Forest
Coronado National Forest
Coronado National Forest
Coronado National Forest
Coronado National Forest
Coronado 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.
0.16"
PRISM 4km · thru 10-09
Precip 14d
Observed precipitation from PRISM 4km gridded analysis, sampled at the region centroid through 2026-10-09. Used when no SNOTEL/SCAN station is mapped to this region.1.61"
PRISM 4km · thru 10-09
Soil Temp
64°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 64°F, sustained 7/7 days above threshold, today 0.21 VWC, 7d avg 0.23 — moisture sustained)
All conditions met (soil 64°F, sustained 7/7 days above threshold, today 0.21 VWC, 7d avg 0.23 — moisture sustained)
All conditions met (soil 64°F, sustained 7/7 days above threshold, today 0.21 VWC, 7d avg 0.23 — 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.