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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
Projects
Daymet
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: 2026-06-07

Documents

Publications Citing This Dataset

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Title Year Author Topic
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, Vapor Pressure, Shortwave Radiation
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, Vapor Pressure, Shortwave Radiation, 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
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, Vapor Pressure, Shortwave Radiation
Hindcasting fine particulate matter in Alaska, US, during wildfire seasons Bredder, Allison, Loboda, Tatiana V., Chen, Dong Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Aerosol Optical Depth/Thickness, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
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, Vapor Pressure, Shortwave Radiation
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, Vapor Pressure, Shortwave Radiation, Surface Pressure, Longwave Radiation, Surface Temperature, Evaporation, Humidity, Convection, Surface Winds, Rain, Land Surface Temperature
Estimating indicators of cyanobacterial harmful algal blooms in New York State Savoy, Philip, Gorney, Rebecca M., Graham, Jennifer L. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Estimating Daily Suspended Sediment Flux From Multiple Data Sources Using Deep Learning Langhorst, Theodore, Andreadis, Konstantinos M., He, Xinchen, Friedmann, Elisa, Gardner, John, Pavelsky, Tamlin Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Factors influencing pronghorn migration behavior and plasticity DeVoe, Jesse D., Proffitt, Kelly M., Millspaugh, Joshua J. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
From Rivers to Floodplains: Leveraging Transfer Learning to Predict Floodplain Dissolved Oxygen Myers, George H., Underwood, Kristen L., Diehl, Rebecca M., Rizzo, Donna M., Chin, Tiffany L., Roy, Eric D. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
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, Vapor Pressure, Shortwave Radiation
Experimental spring planting and attribution of ponderosa pine seedling survival in a hot and dry subregion of the southwestern United States Petrie, Matthew D. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Fungal Spore Seasons Advanced Across the US Over Two Decades of Climate Change Wu, Ruoyu, Song, Yiluan, Head, Jennifer R., Katz, Daniel S. W., Peay, Kabir G., Shedden, Kerby, Zhu, Kai Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
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, Vapor Pressure, Shortwave Radiation
Evapotranspiration Partitioning Across US Ecoregions: A MultiSite Study Using Field StableIsotope Observations Matos, Katarena A., Bowen, Gabriel J., Good, Stephen P., Allen, Scott T. Leaf Characteristics, Photosynthetically Active Radiation, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Physically Based Dimensionless Features for Pluvial Flood Mapping With Machine Learning Bartlett, Mark S., Van Blitterswyk, Jared, Farella, Martha, Li, Jinshu, Smith, Curtis, Parolari, Anthony J., Krishnamoorthy, Lalitha, Mrad, Assaad Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Plant functional traits as key regulators of interannual phenological variability in temperate forests Zhao, Yingyi, Wang, Zhihui, Dronova, Iryna, Yan, Zhengbing, Moon, Minkyu, Meng, Lin, Wang, Jing, Song, Guangqin, Guo, Zhengfei, Su, Yanjun, Liu, Lingli, Wu, Jin Reflectance, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Precipitation leads the long-term vegetation increase in the conterminous United States drylands Chang, Yuhe, Winkler, Alexander J, Noori, Amirhossein, Knyazikhin, Yuri, Myneni, Ranga B Land Use/Land Cover Classification, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Movements and habitat use of the Rocky Mountain Population of trumpeter swans Poessel, Sharon A., Sanders, Todd A., Long, William, Kristof, Andrea, Reishus, Brandon, Proett, Matt, Gower, Claire, Ibrahim, Nicole, Katzner, Todd E. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
On-farm progress toward soil health potential in Southern US row crops Looker, Nathaniel, Morgan, Cristine L.S., Boniface, Helen, Bagnall, Dianna K. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Nonlinear behavior of urban flood peaks in the U.S. Mid-Atlantic region Hua, Ge, Li, Hongyi, Leung, L. Ruby Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Nitrogen fertilizer rate not timing determines no-till corn yield following cereal rye cover crop in northeastern United States Huddell, Alexandra M., Davis, Brian, Richards, Nate, Tully, Kate, Thapa, Resham, Hashemi, Masoud, VanGessel, Mark, Miller, Jarrod, Ketterings, Quirine M., White, Charles, Roth, Greg, Spargo, John T., Mirsky, Steven B. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Projected evolution of droughts and human exposure in the contiguous United States under SSP5-8.5: a regional downscaling perspective Zhang, Leyuan, Rubin, Hannah J, Chien, Rong-You, Fu, Joshua S, Rastogi, Deeksha, Kao, Shih-Chieh, Ashfaq, Moetasim Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Modeling Wildfire Effects on Ecosystem Services in two Disparate California Watersheds and Communities Busari, Ibrahim, Sloggy, Matthew R., Rouhi Rad, Mani, Sahoo, Debabrata, Drury, Stacy A., Escobedo, Francisco J. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Microscale temperatures affect the incidence and implications of predator-avoidance behavior in monarch caterpillars Singh, Prabhjot, Yang, Louie H. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
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