I think inspections can raise the level of defensiveness with some colonies for a day or two afterwards, nothing obviously to do with temperature though - just due to the disturbance.
Whilst I wouldn't normally inspect this early this is far from a normal season, temperatures here in the east have been 15+ several times already and we hardly had a frost all winter. Willow, cherry plums, damsons and many others in urban areas are all producing pollen and/or nectar. On checking colonies for the first time on Thursday the full colonies had brood boxes packed with a combination of left over winter stores, nectar, pollen and brood - in one colony the queen had been reduced to laying little patches of eggs in gaps in the stores. More space needed urgently so glad I looked, oil seed rape top flowers now starting to open...
Rich