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Climate change is becoming an important factor in policy making and economic development. Analyzing droughts and precipitation changes over regions, seasons and years provides insights to the climate change patterns in many aspects. With satellite imaging and more collections on Google Earth Engine (GEE) [1] library, more information is available to discover the patterns. Our research analyses precipitations in United States using Google Earth Engine’s ERA5 Monthly Aggregates [2] image collection. From the collection, different regions of United States were selected to calculate both the spatial and temporal patterns. Image sequence predication and decision tree methods are used for spatial precipitation change pattern. Optical flow analysis is also explored for pattern tracking.