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The present study was conducted to find out the effect and correlation of meteorological parameters on seed germination in three varieties H 1098 – I, H 1300 and H 1316 under six environments (three sowing periods i.e. early, normal and late sown conditions in year 2015 and 2016). Observations were recorded for seed germination and meteorological parameters as maximum and minimum temperature (°C), relative humidity (%) morning as well as evening, sunshine hours, rainfall (mm) and number of rainy days. Tagging period stared from June end when there were sizable amount of flowers. Seed germination (%) was negatively correlated with Tmax and sunshine hours while it was positively correlated with Tmin, RHm and RHe. and rainy days. | Correlation of seed germination with various weather parameters under different environments in upland cotton (Gossypium hirsutum L.)