Considering the importance of maize starch and the lack of knowledge about the effects of storage temperature on the isolated starch properties; maize grains were stored during 12 months at different temperatures (5, 15, 25 and 35◦C). The extraction yield and the physicochemical, thermal, pasting,crystallinity and morphological properties of starches were determined. The starch isolated from grains stored at 35◦C was yellowish and showed a 22.1% decrease in starch extraction yield compared to freshly harvested maize grains. At 35◦C, a reduction in crystallinity was observed by the end of 12 months,despite a parallel rearrangement of the starch chains which resulted in an increase in X-ray peak intensities, gelatinisation temperatures and enthalpy. The starch isolated from maize grains stored at 35◦C appears to have smaller granules, which presents some points in their surface, potentially attributed to the protein matrix compressing the granules within maize grains.