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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
Preterm and Early-Term Delivery After Heat Waves in 50 US Metropolitan Areas Darrow, Lyndsey A., Huang, Mengjiao, Warren, Joshua L., Strickland, Matthew J., Holmes, Heather A., Newman, Andrew J., Chang, Howard H. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Probabilistic flood inundation mapping through copula Bayesian multi-modeling of precipitation products Gomez, Francisco Javier, Jafarzadegan, Keighobad, Moftakhari, Hamed, Moradkhani, Hamid Precipitation, Precipitation Amount, Precipitation Rate, Snow, Rain, 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, Land Surface Temperature
Predicting insect population dynamics by linking phenology models and monitoring data Rincon, Diego F., Esch, Evan D., Gutierrez-Illan, Javier, Tesche, Melissa, Crowder, David W. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Modeling the Effects of Artificial Drainage on Agriculture-Dominated Watersheds Using a Fully Distributed Integrated Hydrology Model Rathore, Saubhagya S., Svyatsky, Daniil S., Coon, Ethan T., Son, Kyongho, Painter, Scott L. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Multi-source machine learning and spaceborne remote sensing data accurately predict three-dimensional soil moisture in an in-service uranium disposal cell Jarchow, Christopher J., Du, Jinyang, Kimball, John S., Kuhlman, Alison, Steckley, Deb Land Surface Temperature, Emissivity, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Projected Changes in Precipitation Extremes Across the Mississippi River Basin Using the NASA Global Daily Downscaled Datasets NEX-GDDP-CMIP6 Talchabhadel, Rocky, Bhattarai, Saurav, Bista, Sunil Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Quantifying the Impacts of an Urban Area on Clouds and Precipitation Patterns: A Modeling Perspective Moraglia, G., Pryor, S. C., Crippa, P. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Seasonal somatic reserves of a northern ungulate influenced by reproduction and a fire-mediated landscape Thompson, Daniel P., Fowler, Nicholas L., Crouse, John A., McDonough, Thomas J., Badajos, Oriana H., Spathelf, Miles O., Watts, Dominique E., Rodman, Susanne U. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Scaling use of the rust fungus Puccinia punctiformis for biological control of Canada thistle (Cirsium arvense (L.) Scop.): First report on a U.S. statewide effort Bean, Dan W., Gladem, Kristi, Rosen, Karen, Blake, Alexander, Clark, Robert E., Henderson, Caitlin, Kaltenbach, John, Price, Joel, Smallwood, Emily L., Berner, Dana K., Young, Stephen L., Schaeffer, Robert N. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Short-Term Tree-Ring Series of Pinus hartwegii Lindl. Taken at Ground Level Correlate to Normalized Difference Vegetation Index Series Montoya-Jimenez, Luis R., Gomez-Guerrero, Armando, Pedraza-Oropeza, Felipe J. A., Gonzalez-Martinez, Teresa M., Correa-Diaz, Arian Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Simulating adaptive grazing management on soil organic carbon in the Southeast U.S.A. using MEMS 2 Santos, Rafael S., Hamilton, Emma K., Stanley, Paige L., Paustian, Keith, Cotrufo, M. Francesca, Zhang, Yao Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Simulated mean monthly groundwater-transported nitrogen loads in watersheds on the north shore of Long Island Sound, 19932022 Barclay, Janet R., Holland, Madeleine J., Mullaney, John R. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Seasonality and longer-term development generate temporal dynamics in the Populus microbiome Argiroff, William A., Carrell, Alyssa A., Klingeman, Dawn M., Dove, Nicholas C., Muchero, Wellington, Veach, Allison M., Wahl, Toni, Lebreux, Steven J., Webb, Amber B., Peyton, Kellie, Schadt, Christopher W., Cregger, Melissa A. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Seasonal macrodemography of North American bird populations revealed through participatory science Socolar, Jacob, Galtbalt, Batbayar, Johnston, Alison, La Sorte, Frank A., Robinson, Orin J., Rosenberg, Kenneth V., Dokter, Adriaan M. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Seasonal dominance of exotic ambrosia beetles compared to native species within deciduous and coniferous woodlots Baniszewski, Julie A., Barnett, Jenny, Reding, Michael E., Ranger, Christopher M. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Regularized Latent Trajectory Models for Spatio-temporal Population Dynamics Lu, Xinyi, Kanno, Yoichiro, Valentine, George P., Kulp, Matt A., Hooten, Mevin B. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Statistical-Physical Adversarial Learning From Data and Models for Downscaling Rainfall Extremes Saha, Anamitra, Ravela, Sai Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
the High-resolution Urban Meteorology for Impacts Dataset (HUMID) daily for the Conterminous United States Newman, Andrew J., Kalb, Christina, Chakraborty, TC, Fitch, Amy, Darrow, Lyndsey A., Warren, Joshua L., Strickland, Matthew J., Holmes, Heather A., Monaghan, Andrew J., Chang, Howard H. 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
The influence of population growth and weather on the value of recreational angling trips within Utah (USA) Smith, Jordan W., Lamborn, Chase C. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
The DairyPrint Model: A Decision-Support Model to Help Dairy Farmers and Other Stakeholders Towards Improved Sustainability da Silva, Tadeu E., Cabrera, Victor E. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
The role of vehicle movement in swine disease dissemination: Novel method accounting for pathogen stability and vehicle cleaning effectiveness uncertainties Galvis, Jason A., Machado, Gustavo Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
The role of root dynamics on the climate sensitivity of ecohydrological processes of over-and understory in a semi-arid groundwater-dependent ecosystem Liu, Qiyue, Barros, Ana P. Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Land Use/Land Cover Classification, Leaf Characteristics, Photosynthetically Active Radiation, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Survival of a polymorphic species in seasonally snow-covered forests Murphy, Penelope W., Pauli, Jonathan N., Shipley, Amy A., Zuckerberg, Benjamin Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Temperature-driven convergence and divergence of ecohydrological dynamics in the ecosystems of a sky island mountain range Petrie, Matthew D., Bradford, John B., Schlaepfer, Daniel R. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
Stream groundwater inputs generate fine-scale variation in brook trout phenology and growth across a warming landscape Gallagher, Brian K., Fraser, Dylan J. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Vapor Pressure, Shortwave Radiation
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