The US Gridded Standardized Precipitation Index (SPI) is derived from the nClimGrid-Daily dataset and and includes timescales of 1, 2, and 3 weeks, as well as 1, 2, 3, 4, 6, 9, and 12 months.

The High Plains Regional Climate Center’s Water Deficit Trends tool provides information on long-term changes in precipitation across the country.

The National Weather Service's Climate Prediction Center (CPC) produces a Global Unified Daily Precipitation product from 1979-present.

The GPCC provides unrestricted access to its monthly gridded precipitation data sets for climate monitoring purposes and related research.

NASA GPM-IMERG: The Integrated Multi-satellitE Retrievals for GPM (IMERG) algorithm combines information from the GPM satellite constellation to estimate precipitation over the majority of the Earth's surface.  

ERA5 is the fifth generation ECMWF atmospheric reanalysis of the global climate covering the period from January 1940 to present. ERA5 is produced by the Copernicus Climate Change Service (C3S) at ECMWF.

The Upper Missouri River Basin Soil Moisture and Snowpack Dashboard displays interactive maps of station-based soil moisture and snowpack data from the five state mesonets in the Upper Missouri River Basin (UMRB)—Montana, Nebraska, North Dakota, South Dakota, and Wyoming.

OWWLS, Overview of Weather Water Land Sites, maps the location of weather stations, streamgages, groundwater monitoring stations and reservoirs across the United States, Puerto Rico, and the U.S. Virgin Islands. 

ACIS NRCC Interpolated (Grid 1) is a gridded dataset that includes area averages of daily maximum, minimum, and average temperatures and daily precipitation amounts for the contiguous United States from January 1, 1950 to the present.

NASA GPM-IMERG: The Integrated Multi-satellitE Retrievals for GPM (IMERG) algorithm combines information from the GPM satellite constellation to estimate precipitation over the majority of the Earth's surface.