Foothill-edge summer afternoons (low 90s, hottest days to ~103°F)
Redlands sits at 1,360 ft, a little cooler than the valley-floor IE cities thanks to elevation and mature tree canopy. Summer afternoons average in the low 90s and reach the high 90s to ~103°F on the hottest days. Hot enough to stress capacitors, but mature tree canopy reduces direct solar load on shaded, west-facing systems.