Abstract: The study was conducted to investigate the effect of different seed moisture contents, temperatures and storage period on seed viability of soybean variety, NARC 2. Three factors were included in the experiment, which were storage temperature, storage period and seed moisture content. During storage, the interaction among the three above-mentioned factors was statically significant. In soybean, the maximum seed viability was observed in control with seed having low moisture content. There was a decline in germination percentage after two months of storage at all temperature in seed with high and medium moisture contents. High moisture content and high temperature decreases germ ability of seeds. Viability was zero at .37°C after two months storage in seeds with low, medium and high moisture contents. The storage life of soybean seed can be increased by lowering temperature and seed moisture content during storage.