UC San Diego Scripps Institute of Oceanography Center for Western Weather and Water Extremes (CW3E) provides observation and forecast datasets, including integrated water transport, integrated water vapor, precipitation, snow, temperature, winds and height, isotherm, meteograms, and virtual RASS.

National Weather Service (NWS) Climate Prediction Center (CPC) generates outlooks that view probabilities of above- or below-normal temperature and precipitation maps at the 6-10 Day, 8-14 Day, Week 3-4, One Month, and Three Month timescales.

The Regional Climate Centers (RCC) Applied Climate Information System (ACIS) offers interactive temperature and precipitation charts with single- or multi-station capabilities.

Precipitation data from CoCoRaHS: a non-profit, community-based network of volunteers of all ages and backgrounds working together to measure and map precipitation (rain, hail, and snow) across the U.S.

NCEI provides a variety of temperature and precipitation products available at the National and Global scale.

The NOAA NCEI Climate at a Glance (CAG) tool provides an analysis of monthly and annual temperatures for the globe and is intended for the study of climate variability and change.

Global Historical Climatology Network (GHCN): an integrated database of daily climate summaries from land surface stations across the globe, including a common suite of quality assurance reviews. 

The U.S. Drought Monitor (USDM) is a weekly map, released each Thursday, to show the location and intensity of drought across the country.

The Evaporative Demand Drought Index (EDDI) is an experimental tool that examines how anomalous the atmospheric evaporative demand (E0; also known as "the thirst of the atmosphere") is for a given location and across a time period of interest.