The following is a list of events of the year 2020 in Colorado.

Incumbents State government Governor: Jared Polis (D) Lieutenant Governor: Dianne Primavera (D)

Events March 5 – Colorado records its first two confirmed cases of COVID-19 within the state. March 14 – The Colorado State Legislature votes to suspend its 2020 legislative session due to pandemic concerns. March 25 – Governor Jared Polis issues a statewide "Stay-at-Home" executive order to curb virus transmission. July 31 – The Pine Gulch Fire ignites north of Grand Junction, eventually burning 139,007 acres and temporarily becoming the largest wildfire in state history. August 13 – The Cameron Peak Fire ignites near Chambers Lake, eventually burning over 208,663 acres to become the largest wildfire in Colorado history. October 14 – The East Troublesome Fire ignites in Grand County, burning 193,812 acres and crossing the Continental Divide. November 3 – The 2020 United States presidential election in Colorado takes place, with Joe Biden winning the state's electoral votes over Donald Trump. Colorado voters also pass Proposition 114, approving a plan to reintroduce gray wolves, and Proposition 118, establishing a paid family leave program.

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