The National Weather Service Weather Prediction Center's Day 3–7 Hazards Outlook shows potential hazardous conditions related to precipitation/flooding, temperature, wildfire/winds, and soils/drought. 

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

The Global Gridded Standardized Precipitation Index (SPI) is derived from the CMORPH daily dataset and includes timescales of 1, 3, 6 and 9 months.  The NOAA CMORPH precipitation dataset is a gridded dataset derived from combining numerous microwave-based estimates from low orbiter satellites. 

The Global Gridded Standardized Precipitation Index (SPI) is derived from the CMORPH daily dataset and includes timescales of 1, 3, 6 and 9 months.  The NOAA CMORPH precipitation dataset is a gridded dataset derived from combining numerous microwave-based estimates from low orbiter satellites. 

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

The NOAA Climate Prediction Center (CPC) Standardized Precipitation Index (SPI) a probabilistic index derived from North American Multi-Model Ensemble (NMME) precipitation data computed for several time scales, ranging from one month to 24 months. The Subseasonal Weekly Forecasts are based on the 3-month SPI and are produced at 1- 2- 3- and 4-week time scales.

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.

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.