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 . 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.)