The present investigation was carried out on the long term rainfall data from 1981 to 2015 recorded at NEBCRC, GBPUA & T, Pantnagar, situated in Udham Singh Nagar district. The data pertaining to annual rainfall shows an increasing trend of rainfall over the period only during rainy season however the number of number of rainydays shows a declining trend for this season. During post monsoon season and summer season a decreasing trend in rainfall anomaly was found at ther rate of 0.11/year and 0.26 mm per year respectively. During all the season a decreasing trend in rainyday anomaly was found. August received average annual rainfall highest and November the minimum. Average number of rainy days found highest in July and minimum in November

Keywords: Rainfall, rainy day, anomaly, trend analysis, seasons, variability, Pantnagar, climate change.