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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
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: 2026-06-02

Documents

Publications Citing This Dataset

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Title Year Author Topic
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
Increasing Soil Water Drought in Response to Altered Precipitation Timing Across the Western United States Zhang, Fangyue, Biederman, Joel A., Schlaepfer, Daniel R., Bradford, John B., Reed, Sasha C., Smith, William K. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Mapping Daily Air Temperature Over the Hawaiian Islands From 1990 to 2021 via an Optimized Piecewise Linear Regression Technique Kodama, Keri M., Kourkchi, Ehsan, Longman, Ryan J., Lucas, Matthew P., Bateni, Sayed M., Huang, YuFen, KagawaViviani, Aurora, Mclean, Jared, Cleveland, Sean B., Giambelluca, Thomas W. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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
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
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
Heat-related illness among workers in British Columbia, Canada: Extreme hot weather in 2021 compared to 20012020 Guo, Xiaocong, Weinberger, Kate R, Tamburic, Lillian, Peters, Cheryl E, McLeod, Christopher B Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Growing degree-days do not explain moth species' distributions at broad scales Keefe, Hannah E., Kharouba, Heather M. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Habitat alteration or climate: What drives the densities of an invading ungulate? Dickie, Melanie, Serrouya, Robert, Becker, Marcus, DeMars, Craig, Noonan, Michael J., Steenweg, Robin, Boutin, Stan, Ford, Adam T. Land Use/Land Cover, Anthropogenic/Human Influenced Ecosystems, Sustainability, Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
High ambient temperature in pregnancy and risk of childhood acute lymphoblastic leukaemia: an observational study Rogne, Tormod, Wang, Rong, Wang, Pin, Deziel, Nicole C, Metayer, Catherine, Wiemels, Joseph L, Chen, Kai, Warren, Joshua L, Ma, Xiaomei Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
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, Shortwave Radiation, Vapor Pressure
Long-Term Decline of the Spotted Salamander (Ambystoma maculatum) in an Undeveloped Landscape Billet, Logan S., Alshwairikh, Yara A., Freidenburg, L. Kealoha, Rubinstein, Adriana, Tracy, Samantha, Nelson, Sydney, Skelly, David K. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Large-scale assessment of permafrost conditions using the Canadian Permafrost Electrical Resistivity Survey (CPERS) database University of Calgary, Herring, Teddi, Lewkowicz, Antoni, Way, Robert, Wang, Yifeng, Chiasson, Alexandre, Froese, Duane Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
Leveraging gauge networks and strategic discharge measurements to aid the development of continuous streamflow records Vlah, Michael J., Ross, Matthew R. V., Rhea, Spencer, Bernhardt, Emily S. Maximum/Minimum Temperature, 24 Hour Precipitation Amount, Snow Water Equivalent, Shortwave Radiation, Vapor Pressure
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