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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: 2026-06-04

Documents

Publications Citing This Dataset

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Title Year Author Topic
Low-intensity fires mitigate the risk of high-intensity wildfires in California's forests Wu, Xiao, Sverdrup, Erik, Mastrandrea, Michael D., Wara, Michael W., Wager, Stefan Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Incorporating Weather Attribution to Future Water Budget Projections Martin, Nick Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Identifying Structural Priors in a Hybrid Differentiable Model for Stream Water Temperature Modeling Rahmani, Farshid, Appling, Alison, Feng, Dapeng, Lawson, Kathryn, Shen, Chaopeng Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Planting into a living cover crop alters preemergence herbicide dynamics and can reduce soybean yield Nunes, Jose J., Arneson, Nicholas J., DeWerff, Ryan P., Ruark, Matt, Conley, Shawn, Smith, Damon, Werle, Rodrigo Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Potential for surprising heat and drought events in wheat-producing regions of USA and China Coughlan de Perez, Erin, Ganapathi, Hamsa, Masukwedza, Gibbon I. T., Griffin, Timothy, Kelder, Timo Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Pay-for-practice or Pay-for-performance? A Coupled Agent-based Evaluation Tool for Assessing Sediment Management Incentive Policies Lin, Chung-Yi, Yang, Y.C. Ethan, Kumar Chaudhary, Anil Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Predicting Daily River Chlorophyll Concentrations at a Continental Scale Savoy, Philip, Harvey, Judson W. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Multiple environmental drivers across life stages influence Yukon River Chinook salmon productivity Murdoch, A., Connors, B.M., Lapointe, N.W.R., Mills Flemming, J., Cooke, S.J., Mantyka-Pringle, C. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Older forests function as energetic and demographic refugia for a climate-sensitive species McGinn, Kate A., Zuckerberg, Benjamin, Pauli, Jonathan N., Zulla, Ceeanna J., Berigan, William J., Wilkinson, Zachary A., Barry, Josh M., Keane, John J., Gutierrez, R. J., Peery, M. Zachariah Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Puerto Rico Historical Climate Analysis. A closer look at complex tropical terrain Puleikis, Kenny, Wang, Jiali Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Modeling impacts of saltwater intrusion on methane and nitrous oxide emissions in tidal forested wetlands Wang, Hongqing, Dai, Zhaohua, Krauss, Ken W., Trettin, Carl C., Noe, Gregory B., Burton, Andrew J., Ward, Eric J. 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
Regional modeling of groundwater recharge in the Basin of Mexico: new insights from satellite observations and global data sources Gonzalez-Ortigoza, Sergio, Hernandez-Espriu, Antonio, Arciniega-Esparza, Saul Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Recent variability and trends and projected changes in precipitation in the southeastern United States: a focus on the Apalachicola-Chattahoochee-Flint River Basin Diem, Jeremy E., Bonsu, Prince Osei Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Relationship between isotope ratios in precipitation and stream water across watersheds of the National Ecological Observation Network Butler, Zachariah, Good, Stephen, Haagsma, Marja, Segura, Catalina, Hu, Huancui Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
The mortality burden of extreme heat in Connecticut: A time series analysis Goddard, Emily, Lin, Chengyi, Ma, Yiqun, Chen, Kai 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
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
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
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
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
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
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