导航|地址|刷新
PRISM Group at Oregon State University








Home

About
PRISM Overview

What's New

Publications

Citizen Science

Mailing List 


Data Grids
Time Series Data

1991-2020 Normals

Other Normals

Data Directory 

Supporting Datasets

800m Data Sales

Data Explorer
Map Graphics
Anomalies & Month-to-Date

Drought Indicator Tool

State Precipitation Maps

Daily Map Graphics Generator

Daily Normals Animations

Map Graphics Archive 

Plant Hardiness
Current Version (2023)

Prior Version (2012)


Documentation
PRISM Datasets (pdf)  

PRISM History (pdf)  

PRISM Methods

PRISM Data Formats

Bulk Data Download Info

Terms of Use

Data Updates Calendar
Overview

Daily Data (list)

Daily Data (tabular)

Monthly Data (tabular)


Known Data Issues

Data Notices Archive


FAQ







Bulk Data Download Information



Important Note Regarding Automated Data Downloads
PRISM bulk download systems (FTP, web services) facilitate automated fetching of PRISM datasets. It is important to note that preliminary data fetched in this manner do not account for the fact that we produce 8 versions of a daily grid (and 7 versions of a monthly grid), out to six months, at which point we call it "final." Much can change across these versions, as we receive more weather station data and subject the grids to more rigorous QC screening routines. We do provide, via web services, utilities for determining when a PRISM grid was last updated.

Here are resources to learn more about this:

PRISM Data Update Schedule (PDF file)

PRISM Update Calendar (web page)

FTP Access:View FTP Documentation (.pdf)

Quick instructions:  Connect your FTP client software to prism.oregonstate.edu (no username or password required)

Note that we also make our FTP server content viewable via web browsers via this data directory: https://data.prism.oregonstate.edu


Web Services Access:View Web Services Documentation (.pdf)

PRISM web services enable direct https requests (often via scripts written in Python or other languages) for PRISM grids.

Questions to prism-questions@nacse.org This website is supported by the USDA Risk Management Agency © 2026, Northwest Alliance for Computational Science & Engineering (NACSE), based at Oregon State University

------
导航页 打开网址