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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: 2026-07-19

Documents

Publications Citing This Dataset

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Title Year Author Topic
Distinct latitudinal patterns of shifting spring phenology across the Appalachian Trail Corridor Tourville, Jordon C., Murray, Georgia L. D., Nelson, Sarah J. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Dramatic recent declines in the size of monarch butterfly (Danaus plexippus) roosts during fall migration Davis, Andrew K., Croy, Jordan R., Snyder, William E. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Effects of air pollution on emergency room visits for mental disorders: risks and effect modification by comorbid physical disorders and personal characteristics Yoo, Eun-hye, Roberts, John E, Chen, Kai Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Elevated Ambient Temperature Associated With Increased Cardiovascular DiseaseRisk Among Patients on Hemodialysis Xi, Yuzhi, Wettstein, Zachary S., Kshirsagar, Abhijit V., Liu, Yang, Zhang, Danlu, Hang, Yun, Rappold, Ana G. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Embedded physical constraints in machine learning to enhance vegetation phenology prediction Cao, Mengying, Weng, Qihao Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Advances in breeding phenology outpace latitudinal and elevational shifts for North American birds tracking temperature Neate-Clegg, Montague H. C., Tonelli, Benjamin A., Tingley, Morgan W. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
A novel validation of satellite soil moisture using SM2RAIN-derived rainfall estimates Do, Son K., Tran, Thanh-Nhan-Duc, Le, Manh-Hung, Bolten, John, Lakshmi, Venkataraman Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation, Soil Classification, Soil Depth, Soil Porosity, Soil Texture, Terrain Elevation, Surface Soil Moisture
A Multi-Task Learning Based Runoff Forecasting Model for Multi-Scale Chaotic Hydrological Time Series Zuo, Hui, Yan, Gaowei, Lu, Ruochen, Li, Rong, Xiao, Shuyi, Pang, Yusong Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
A multi-decadal 1 km gridded database of continental-scale spring onset products Izquierdo-Verdiguier, Emma, Zurita-Milla, Raul Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Assessing the impact of surface water and groundwater interactions for regional-scale simulations of water table elevation Delottier, Hugo, Schilling, Oliver S., Therrien, Rene Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Anuran occupancy varies with stream characteristics and flow across Huck, Margaret A., Bateman, Heather L., de Albuquerque, Fabio Suzart, Lewis, Jesse S. 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
Association between solar radiation and mood disorders among Gulf Coast residents Deng, Xinlei, Launer, Lenore J., Lawrence, Kaitlyn G., Werder, Emily J., Buller, Ian D., Jackson, William Braxton, Sandler, Dale P. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Cereal rye cover crop termination at or before soybean planting has minimal effect on soybean yield across the midwestern US Silva, Tatiane Severo, Mourtzinis, Spyridon, McMechan, Anthony Justin, Carmona, Gabriela Inveninato, Potter, Bruce D., Tilmon, Kelley J., Hesler, Louis S., Seiter, Nicholas J., Wright, Robert, Osborne, Shannon L., Hunt, Thomas E., Conley, Shawn P. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Climate change and C<inf>4</inf> and C<inf>3</inf> grasses in a midlatitude dryland steppe Anderson, Robert C., Martyn, Trace E., Renne, Rachel R., Burke, Ingrid C., Lauenroth, William K. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Biophysical control of daytime and nighttime soil respiration during growing and non-growing seasons in a temperate deciduous forest Han, Yajing, Wang, Gangsheng, Xiang, Daifeng, Zhou, Shuhao, Xiong, Lihua Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Canopy Heterogeneity and Environmental Variability Drive Annual Budgets Hawman, P. A., Cotten, D. L., Mishra, D. R. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Future Climate Projections for South Florida: Improving the Accuracy of Air Temperature and Precipitation Extremes With a Hybrid Statistical Bias Correction Technique Rahimi, Leila, Hoque, Mushfiqul, Ahmadisharaf, Ebrahim, Alamdari, Nasrin, Misra, Vasubandhu, Maran, Ana Carolina, Kao, ShihChieh, AghaKouchak, Amir, Talchabhadel, Rocky Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Extreme precipitation promotes invasion in managed grasslands Ratcliffe, Hugh, Kendig, Amy, Vacek, Sara, Carlson, Daren, Ahlering, Marissa, Dee, Laura E. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Evaluation of groundwater resources in the Upper White River Basin within Mount Rainier National Park, Washington state, 2020 Fuhrig, Leland T., Long, Andrew J., Headman, Alexander O. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Evaluating the utility of weather generators in crop simulation models for in-season yield forecasting Nandan, Rohit, Bandaru, Varaprasad, Meduri, Pridhvi, Jones, Curtis, Lollato, Romulo Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Estimates of Southern White-tailed Ptarmigan daily nest survival from multiple sites in the Southern Rocky Mountains of Colorado Wann, Gregory, Seglund, Amy, Street, Phillip, Parker, Nicholas, Nelson, Shelley, Runge, Jonathan, Braun, Clait, Aldridge, Cameron Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Estimating the impacts of nonoptimal temperatures on mortality: A study in British Columbia, Canada, 20012021 Shrestha, Rudra K., Sevcenco, Ioana, Casari, Priscila, Ngo, Henry, Erickson, Anders, Lavoie, Martin, Hinshaw, Deena, Henry, Bonnie, Ye, Xibiao Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Evidence of ecosystem tipping point on St. Lawrence Island: Widespread lake drainage events after 2018 Liu, Aobo, Cheng, Xiao, Wang, Chengxin, Chen, Yating Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Examining contaminant transport hotspots and their predictability across contrasted watersheds Ariano, Sarah S., Bain, Jamie, Ali, Genevieve Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation, Carbon, Soil Ph, Cation Exchange Capacity, Soil Bulk Density, Soil Depth
Evaluation of precipitation across the contiguous United States, Alaska, and Puerto Rico in multi-decadal convection-permitting simulations Akinsanola, Akintomide Afolayan, Jung, Chunyong, Wang, Jiali, Kotamarthi, Veerabhadra Rao Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
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