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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: 2026-07-18

Documents

Publications Citing This Dataset

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Title Year Author Topic
The salmonid and the subsurface: Hillslope storage capacity determines Dralle, D. N., Rossi, G., Georgakakos, P., Hahm, W. J., Rempe, D. M., Blanchard, M., Power, M. E., Dietrich, W. E., Carlson, S. M. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
The changing dynamics of population exposure to extreme heat in the contiguous United States from 2001 to 2020 Chen, Guiyu, Li, Chaosu Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
SENSE-GDD: A Satellite-Derived Temperature Monitoring Service to Provide Keramitsoglou, Iphigenia, Sismanidis, Panagiotis, Sykioti, Olga, Pisinaras, Vassilios, Tsakmakis, Ioannis, Panagopoulos, Andreas, Argyriou, Argyrios, Kiranoudis, Chris T. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Shifts in risk sensitivity and resource availability alter fat stores for a large mammal following extreme winter conditions LaSharr, Tayler N., Jakopak, Rhiannon P., Bardsen, BardJrgen, Robinson, Timothy J., Dwinnell, Samantha P. H., Randall, Jill, Kaiser, Rusty C., Thonhoff, Mark, Scurlock, Brandon, Fieseler, Troy, Hymas, Neil, Monteith, Kevin L. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Synthetic data generation for validating site-specific crop yield response modelling using WOFOST and gaussian geostatistical simulations Tanaka, T.S.T., Yokoyama, Y., Mieno, T., de Wit, A. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Understanding and reducing warm and dry summer biases in the central United States: Analytical modeling to identify the mechanisms for CMIP ensemble error ... Sun, Chao, Liang, Xin-Zhong Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
A data-driven evaluation of post-fire landslide susceptibility Culler, Elsa S., Livneh, Ben, Rajagopalan, Balaji, Tiampo, Kristy F. Fire Ecology, Biomass Burning, Wildfires, Fire Occurrence, Burned Area, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Data reformation - A novel data processing technique enhancing machine learning applicability for predicting streamflow extremes Tran, Vinh Ngoc, Ivanov, Valeriy Y., Kim, Jongho Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Effectiveness of machine learning and deep learning models at county-level soybean yield forecasting Farmonov, Nizom, Amankulova, Khilola, Khan, Shahid Nawaz, Abdurakhimova, Mokhigul, Szatmari, Jozsef, Khabiba, Tukhtaeva, Makhliyo, Radjabova, Khodicha, Meiliyeva, Mucsi, Laszlo Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Reflectance, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation, Land Surface Temperature, Emissivity
A practical exploration of land cover impacts on surface and air temperature when they are most consequential Novick, Kimberly A, Barnes, Mallory L Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
A probabilistic framework for forecasting maize crop yield response to agricultural inputs with sub-seasonal climate predictions Lacasa, Josefina, Messina, Carlos D, Ciampitti, Ignacio A Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
An Inventory of AI-ready Benchmark Data for US Fires, Heatwaves, and Droughts Lin, Xinming, Hou, Zhangshuan Fire Occurrence, Surface Thermal Properties, Land Surface Temperature, THERMAL ANOMALIES, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
An improved fusion of Landsat-7/8, Sentinel-2, and Sentinel-1 data for monitoring alfalfa: Implications for crop remote sensing Chen, Jiang, Zhang, Zhou Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Analysis of Preprocessing Techniques for Missing Data in the Prediction of Sunflower Yield in Response to the Effects of Climate Change Calin, Alina Delia, Coroiu, Adriana Mihaela, Muresan, Horea Bogdan Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Association between outdoor temperature and fatal police shootings in the United States, 20152021 Martinson, Ellen, Chang, Howard H., DSouza, Rohan R., Ebelt, Stefanie, Scovronick, Noah Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Associations between short-term ambient temperature exposure and emergency department visits for amphetamine, cocaine, and opioid use in California from 2005 to 2019 Chang, Howard H., Zhang, Haisu, Latimore, Amanda D., Murray, Brian P., D'Souza, Rohan R., Scovronick, Noah, Gribble, Matthew O., Ebelt, Stefanie T. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Batrachochytrium dendrobatidis in the Arid and Thermally Extreme Sonoran Desert Roth, Sadie A., Griffis-Kyle, Kerry L., Barnes, Matthew A. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
CLIM4OMICS: a geospatially comprehensive climate and multi-OMICS database for maize phenotype predictability in the United States and Canada Sarzaeim, Parisa, Munoz-Arriola, Francisco, Jarquin, Diego, Aslam, Hasnat, De Leon Gatti, Natalia Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Biophysical drivers for predicting the distribution and abundance of invasive yellow sweetclover in the Northern Great Plains Saraf, Sakshi, John, Ranjeet, Goljani Amirkhiz, Reza, Kolluru, Venkatesh, Jain, Khushboo, Rigge, Matthew, Giannico, Vincenzo, Boyte, Stephen, Chen, Jiquan, Henebry, Geoffrey, Jarchow, Meghann, Lafortezza, Raffaele Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Flood Compound Modelling: Framework and Application to a Coastal Environment Avila-Guzman, Maria Paula, Terrier, Morgane, Rakotoarimanga, Hugo, Delestre, Olivier. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Exploring the Spatial Patterning of Sociodemographic Disparities in Extreme Heat Exposure at Multiple Scales Across the Conterminous United States Rastogi, Deeksha, Christian, Jaekedah, Tuccillo, Joe, Christian, Blair, Kapadia, Anuj J., Hanson, Heidi A. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Zoning of the Queretaro wine region del Rio, Maria S., Raventos, Lluis, Garza, Valentina Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Widespread regeneration failure in ponderosa pine forests of the southwestern United States Petrie, M.D., Hubbard, R.M., Bradford, J.B., Kolb, T.E., Noel, A., Schlaepfer, D.R., Bowen, M.A., Fuller, L.R., Moser, W.K. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Residential and race/ethnicity disparities in heat vulnerability in the United States Manware, Mitchell, Dubrow, Robert, Carrion, Daniel, Ma, Yiqun, Chen, Kai 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
Short-term associations between ambient air pollution and emergency department visits for Alzheimers disease and related dementias Zhang, Haisu, Shi, Liuhua, Ebelt, Stefanie T., DSouza, Rohan R., Schwartz, Joel D., Scovronick, Noah, Chang, Howard H. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
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