Delaware Climate Data

Delaware Climate Normals

Climate Normals are three-decade averages of climatological variables including temperature and precipitation. This product is produced once every 10 years. The 1981–2010 U.S. Climate Normals dataset is the latest release of NCEI's Climate Normals.

Delaware Precipitation Frequency Estimates

This Atlas provides precipitation frequency estimates for 5-minute through 60-day durations at average recurrence intervals of 1-year through 1,000-year.

Standardized Precipitation Index

This is an index that compares precipitation over a selected duration to the historical probability of precipitation. Click here to visit the tool for Delaware SPI data.

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Join CoCoRaHS, the Community Collaborative Rain, Hail and Snow Network, today!

Partners

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Delaware Environmental Observing System
Delaware Geological Survey
UD College of Earth, Ocean, and Environment

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