Synonyms and related words :
aestival, amidships, average, blood-hot, blood-warm, calid, central, core, equidistant, genial, halfway, interior, intermediary, intermediate, luke, lukewarm, mean, medial, median, mediocre, mediterranean, medium, mesial, mezzo, mid, middle, middlemost, middling, midland, midmost, midships, midway, mild, nuclear, room-temperature, subtropical, summery, sunny, sunshiny, temperate, tepid, thermal, thermic, toasty, tropical, unfrozen, warm, warm as toast, warmish