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Temperature & Precipitation


Temperature and precipitation datasets are some of the most important types of data used for drought and climate analysis.  Temperature and precipitation data are collected from weather stations, weather radar, satellite and computer models.  To make the data easier to use, many organizations derive products from the raw data.  These derived products may start with station data, which estimate (or interpolate) the information between stations using different methodologies.  Radar and satellite based products may include station data as ‘ground truth’ to remove bias and create more accurate products.


NWS Precipitation Analysis
Current and archived precipitation totals at different timescales (daily, last week, last month, and more). This data is on a 5 km grid and uses weather radar data combined with rain gauges.
Standardized Precipitation Index (SPI) and Temperatures
Drought indices, precipitation and temperature maps for different locations and timescales, available as maps or GIS data downloads.
Example image of GRIDMET
The gridMET idataset is daily high-spatial resolution (~4-km, 1/24th degree) gridded surface meteorological data covering the contiguous US from 1979 to present.
Quantitative Precipitation Forecasts
Select forecast maps for total precipitation over different timescales.
Graphical Forecast Interactive Map
Current and forecast meteorological products from the National Weather Service (NWS) including: Temperature, Precipitation, Probability of Precipitation, Weather, Hazards, Dew Point, Relative Humidity, Wind Speed, Wind Gusts, Wind Direction, and Sky Cover.
Menu of products from National Climatic Data Center
A list of temperature and precipitation products available at the national and global scale from the National Centers for Environmental Information (NCEI).
Weather Service National Forecast Maps
Wide selection of maps includes forecasts for temperature and precipitation for next 12 hours to 6 days.
Regional Climate Maps
Weekly, one-, three- and 12-month maps depicting precip totals, maximum and minimum temperatures, and departures from normal.
Outlooks from the Climate Prediction Center
Probabilities of above- or below-normal temperature and precipitation.
Sample of Evaporative Demand Drought Index (EDDI)
The Evaporative Demand Drought Index (EDDI) is an experimental tool that can serve as an indicator of both rapidly evolving "flash" droughts (developing over a few weeks) and sustained droughts (developing over months but lasting up to years).
Sample of Evaporative Stress Index (ESI)
The Evaporative Stress Index (ESI) uses remotely sensed land-surface temperature time-change signals to describe anomalies in evapotranspiration.
Image of the stations used in the Global Historical Climatology Network
As NOAA's primary station data set, the Global Historical Climatology Network (GHCN) is an integrated database of daily climate summaries from land surface stations across the globe, including a common suite of quality assurance reviews.