Daymet Monthly Climate Summaries for North America at 1-km Resolution

Daymet Version 4 R1 provides monthly climate summaries at a 1 km x 1 km spatial resolution for North America, Hawaii, and Puerto Rico. The dataset includes five variables: minimum and maximum temperature, precipitation, vapor pressure, and snow water equivalent, with monthly averages or totals. It is produced by NASA and derived from daily weather parameters, with specific corrections applied to 2020 and 2021 data.

Use Cases

• Analyzing long-term temperature trends using monthly minimum and maximum temperature averages.
• Modeling hydrological cycles with monthly precipitation totals and snow water equivalent averages.
• Studying atmospheric moisture content via monthly vapor pressure averages.
• Conducting regional climate impact assessments across continental North America, Hawaii, and Puerto Rico.

Strengths

• Provides high-resolution data at a 1 km x 1 km grid for detailed spatial analysis.
• Includes corrected data for 2020 and 2021 (60 files updated) to address missing station readings in Canada.
• Covers a long period of record, matching the temporal coverage of the underlying Daymet daily data.

Limitations

• Key metadata such as row count, file size, and specific license terms are not provided across platforms.
• The dataset's temporal start date and exact time range are not explicitly stated in the provided descriptions.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived from Daymet Version 4 R1 daily weather parameters, incorporating inputs from sources like GHCNd after corrections to station data ingest.

Time Range

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Freshness

2026-03-13 03:12:32.852301

Geography

Land areas of continental North America (Canada, United States, Mexico), Hawaii, and Puerto Rico.