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Description

This dataset provides Daymet Version 4 R1 data as gridded estimates of daily weather parameters for North America, Hawaii, and Puerto Rico. Daymet variables include the following parameters: minimum temperature, maximum temperature, precipitation, shortwave radiation, vapor pressure, snow water equivalent, and day length. The dataset covers the period from January 1, 1980, to December 31 (or December 30 in leap years) of the most recent full calendar year for the Continental North America and Hawaii spatial regions. Data for Puerto Rico is available starting in 1950. Each subsequent year is processed individually at the close of a calendar year. Daymet variables are provided as individual files, by variable and year, at a 1 km x 1 km spatial resolution and a daily temporal resolution. Areas of Hawaii and Puerto Rico are available as files separate from the continental North America. Data are in a North America Lambert Conformal Conic projection and are distributed in a standardized Climate and Forecast (CF)-compliant netCDF file format. In Version 4 R1, all 2020 and 2021 files were updated to improve predictions especially in high-latitude areas. It was found that input files used for deriving 2020 and 2021 data had, for a significant portion of Canadian weather stations, missing daily variable readings for the month of January. NCEI has corrected issues with the Environment Canada ingest feed which led to the missing readings. The revised 2020 and 2021 Daymet V4 R1 files were derived with new GHCNd inputs. Files outside of 2020 and 2021 have not changed from the previous V4 release.

Product Summary

Platforms
MODELS
Instruments
Computer
Spatial Extent

N: 82.9143 S: 14.0749 E: -53.0567 W: -178.133

Location
NORTH AMERICA ,
PUERTO RICO
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1950-01-01 to 2025-12-31
Data Partner
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC) (ORNL_DAAC)
Concept ID
C2532426483-ORNL_CLOUD
Data State
COMPLETE
Number of Files/Granules
1176
Processing Level
4
Published
Updated
Science Keywords
Maximum/Minimum Temperature ,
24 Hour Precipitation Amount ,
Maximum/Minimum Temperature ,
Snow Water Equivalent ,
Vapor Pressure ,
Shortwave Radiation

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Thornton, M. M., Shrestha, R., Wei, Y., Thornton, P. E., & Kao, S.-C. (2022). Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 4 R1 (Version 4.1). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/2129 Date Accessed: 2026-06-01

Documents

Publications Citing This Dataset

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Title Year Author Topic
Stagewise crop yield prediction with multisource functional indices Zou, Jing, Okhrin, Ostap Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Stratified mortality risk estimation across the ozone distribution: interactions with PM2.5, NO2, and population characteristics Wendt Hess, Judy, Chan, Wenyaw Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure, Particulate Matter, Particulates, Nitrogen Dioxide
Revealing park visitation under dual environmental threats in a socially stratified city: Evidence from smartphone mobility data in Dallas Gong, Wenjing, Wu, Ling, Zhu, Chunwu, Song, Yang, Ye, Xinyue Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
When Do Riverine Systems Feel the Burn? Simulating How Burn Extent and Severity Modulate Hydrologic Controls on Biogeochemical Export Wampler, K. A., MyersPigg, A. N., Kang, H., Regier, P., Scheibe, T. D., Bladon, K. D. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure, Leaf Characteristics, Photosynthetically Active Radiation, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Evapotranspiration, Photosynthesis, Primary Production, Latent Heat Flux
Tracking seasonal variability in plant traits from spaceborne PRISMA and Ji, Fujiang, Zheng, Ting, Shiklomanov, Alexey N., Yang, Ruqi, Townsend, Philip A., Li, Fa, Hao, Dalei, Dashti, Hamid, Kovach, Kyle R., You, Hangkai, Zhou, Junxiong, Chen, Min Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Reflectance, Albedo, Anisotropy, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Public pool usage as adaptation against urban heat Borsky, Stefan, Fesselmeyer, Eric Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Yield From Iowa's First Commercial Miscanthus Fields: Implications of Spatial Variability for Productivity and Sustainability Beyond Research Plots Emran, ShahAl, Petersen, Bryan M., Roney, Heather Elizabeth, Masters, Michael David, Varela, Sebastian, Hedrick, Travis, Leakey, Andrew D. B., VanLoocke, Andy, Heaton, Emily A. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Combining Eddy Covariance Towers, Field Measurements, and the MEMS 2 Ecosystem Model Improves Confidence in the Climate Impacts of Bioenergy With Carbon Capture and Storage Falvo, Grant, Zhang, Yao, Abraha, Michael, Mosier, Samantha, Su, YahnJauh, Lei, Cheyenne, Chen, Jiquan, Cotrufo, M. Francesca, Robertson, G. Philip Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
DeepBase: A Deep Learning-based Daily Baseflow Dataset across the United States Ghaneei, Parnian, Moradkhani, Hamid Land Surface/Agriculture Indicators, Drought Indices, Satellite Soil Moisture Index, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure, Heat Flux, Longwave Radiation, Surface Temperature, Evaporation, Evapotranspiration, Rain, Snow, Canopy Characteristics, Leaf Characteristics, Vegetation Cover, Soil Moisture/Water Content, Soil Temperature, Albedo, Land Surface Temperature, Snow Water Equivalent, Runoff
Evaluating Vegetation Greening and Browning across the Rio Grande Basin Talchabhadel, Rocky, Rhodes, Edward C., Palmate, Santosh S., Kumar, Saurav Precipitation, Precipitation Amount, Precipitation Rate, Snow, Rain, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Reflectance, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Evaluating elk distribution and conflict under proposed management alternatives at the National Elk Refuge in Jackson, Wyoming Cotterill, Gavin G., Cross, Paul C., Cole, Eric K., Cook, Jonathan D., Mceachran, Margaret C., Graves, Tabitha A. RADAR IMAGERY, Terrain Elevation, Topographical Relief Maps, Digital Elevation/Terrain Model (DEM), Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Flood detection using PolSAR decomposition, feature selection, and deep learning Lee, Jinwook, Janizadeh, Saeid, Melancon, Alexander, Bateni, Sayed M., Kim, Dongkyun, Molthan, Andrew, Jun, Changhyun, Farhadiani, Ramin, Homayouni, Saeid, Dinka, Megersa RADAR IMAGERY, Terrain Elevation, Topographical Relief Maps, Digital Elevation/Terrain Model (DEM), Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Fine-scale vegetation composition and structure shape spatiotemporal variation in surface albedo across a low Arctic tundra landscape Shuman, Ian N C, Serbin, Shawn P, Erb, Angela M, Schaaf, Crystal B, Yang, Daryl Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Hydroclimate-coupled framework for assessing power system resilience under summer drought and climate change Shuai, Hang, Li, Fangxing, Zhu, Jinxiang, Tingen, William Jerome, Mukherjee, Srijib Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Identifying surface sulphur dioxide (SO2) monitoring gaps in Saint John, Canada with land use regression and hot spot mapping Siu, Tsz Kin, Greene, Christopher S., Fong, Kelvin C. Land Use/Land Cover Classification, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
HighResolution NationalScale Water Modeling Is Enhanced by Multiscale Differentiable PhysicsInformed Machine Learning Song, Yalan, Bindas, Tadd, Shen, Chaopeng, Ji, Haoyu, Knoben, Wouter J. M., Lonzarich, Leo, Clark, Martyn P., Liu, Jiangtao, van Werkhoven, Katie, Lamont, Sam, Denno, Matthew, Pan, Ming, Yang, Yuan, Rapp, Jeremy, Kumar, Mukesh, Rahmani, Farshid, Thebault, Cyril, Adkins, Richard, Halgren, James, Patel, Trupesh, Patel, Arpita, Sawadekar, Kamlesh Arun, Lawson, Kathryn Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Integrated tree canopy expansion and cool roofs can optimize air temperature and heat exposure reductions in Boston Smith, Ian A., Li, Dan, Fork, David K., Wellenius, Gregory A., Hutyra, Lucy R. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Disentangling geomorphic equifinality in sediment and hydrologic connectivity through the analyses of landscape drivers of hysteresis Cho, Se Jong, Lund, J. William, Ball, Grady, Brown, Jeb, Gellis, Allen, Gurley, Laura, Hamshaw, Scott, Kwang, Jeffrey, Laws, Andrew, Noe, Greg, Oelsner, Gretchen, Parchaso, Francis, Phipps, Cara, Skalak, Katie, Sutfin, Nicholas Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Effects of ConvectionPermitting Grid Resolution on ColdSeason Precipitation Simulated by the Canadian Regional Climate Model Version 6 Over the Province of Quebec, Canada Chalifour, O., Music, B., Theriault, J. M., Nadeau, D. F., BedardTherrien, A. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Effect of water delivery and irrigation for riparian restoration in the Colorado River Delta, Mexico Nagler, Pamela L., Sall, Ibrahima, GomezSapiens, Martha M., Flessa, Karl W., BarretoMunoz, Armando, Didan, Kamel Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Ensemble downscaled climate dataset for Alaska and Hawaii under historical and future conditions Kim, Taereem, Villarini, Gabriele, Done, James M., Prein, Andreas F., Johnson, David R., Wang, Chao Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Enhancing streamflow reanalysis across the conterminous US leveraging multiple gridded precipitation data sets Ghimire, Ganesh R., Kao, ShihChieh, Gangrade, Sudershan Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure, Surface Pressure, Longwave Radiation, Surface Temperature, Evaporation, Humidity, Convection, Surface Winds, Rain, Land Surface Temperature
Climate drives variation in optimal phenology: 46 years of multienvironment trials in sunflower Clark, Eliza I., Moore, Miles A., Khoury, Colin K., Hulke, Brent S., Kane, Nolan C., Elmendorf, Sarah C. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Climate adaptation in the southwest US: The SWPar4. 5 parameter set for stochastic weather generators Fullhart, Andrew T., Gao, Shang, Wang, Wenting, Elias, Emile, Armendariz, Gerardo, Goodrich, David C. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Catchment Attributes and MEteorology for Large-Sample SPATially Knoben, Wouter J. M., Thebault, Cyril, Keshavarz, Kasra, Torres-Rojas, Laura, Chaney, Nathaniel W., Pietroniro, Alain, Clark, Martyn P. Crop/Plant Yields, Landscape Patterns, Cropland, Land Use/Land Cover Classification, Leaf Characteristics, Photosynthetically Active Radiation, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Stratigraphic Sequence, Digital Elevation/Terrain Model (DEM), Soil Depth, Sediments, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
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