National Weather Service 3-Day Min/Max Temperature Forecast

This map displays the minimum and maximum air temperature forecast over the next 3 days across the Contiguous United States, Alaska, Guam, Hawaii, and Puerto Rico in daily increments. Minimum temperatures are typically at night, while maximum temperatures are typically afternoon. The original raster data has been processed into 1-degree contours and both Layers include a Time Series set to a 24-hour time interval. The minimum and maximum temperatures are the forecasted ambient air temperature in °F. See sister data product for Apparent and Expected Hourly Temperatures Revisions May 1, 2026: Added field descriptions and value types. Sep 1, 2022: Updated renderer Arcade logic on layers to correctly symbolize on values greater than 120 and less than -60 degrees. Apr 22, 2022: Set 'Min Temperature' layer visibility to False by default, so only Max temperature is visible when initially viewed. Apr 21, 2022: Added Forecast Period Number 'Interval' field for an alternate query method to the Timeline of data. Detail Service Data update interval is: Hourly Where is the data coming from? The National Digital Forecast Database (NDFD) was designed to provide access to weather forecasts in digital form from a central location. The NDFD produces gridded forecasts of sensible weather elements. NDFD contains a seamless mosaic of digital forecasts from National Weather Service (NWS) field offices working in collaboration with the National Centers for Environmental Prediction (NCEP). All of these organizations are under the administration of the National Oceanic and Atmospheric Administration (NOAA). Overnight Minimum Temperature Source: CONUS: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.mint.bin ALASKA: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.alaska/VP.001-003/ds.mint.bin HAWAII: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.hawaii/VP.001-003/ds.mint.bin GUAM: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.guam/VP.001-003/ds.mint.bin PUERTO RICO: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.puertori/VP.001-003/ds.mint.bin Daytime Maximum Temperature Source: CONUS: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.maxt.bin ALASKA: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.alaska/VP.001-003/ds.maxt.bin HAWAII: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.hawaii/VP.001-003/ds.maxt.bin GUAM: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.guam/VP.001-003/ds.maxt.bin PUERTO RICO: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.puertori/VP.001-003/ds.maxt.bin Where can I find other NDFD data? The Source data is downloaded and parsed using the Aggregated Live Feeds methodology to return information that can be served through ArcGIS Server as a map service or used to update Hosted Feature Services in Online or Enterprise. What can you do with this layer? This feature service is suitable for data discovery and visualization. Identify features by clicking on the map to reveal the pre-configured pop-ups. View the time-enabled data using the time slider by Enabling Time Animation. This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency. If you would like to be alerted to potential issues or simply see when this Service will update next, please visit our Live Feed Status Page.本地图展示了美国本土、阿拉斯加、关岛、夏威夷及波多黎各未来3天逐日的气温预报极值（最低与最高气温）。通常而言，最低气温多出现在夜间，最高气温则通常出现在午后。原始栅格数据已被处理为1度间隔等值线，两个图层均包含设置为24小时间隔的时间序列（Time Series）。此处的最低与最高气温均为以华氏度（°F）为单位的预报环境气温。 可查阅配套数据产品《体感与预计逐小时气温》。 更新修订记录： - 2026年5月1日：新增字段说明与数值类型定义 - 2022年9月1日：优化图层的Arcade渲染逻辑，使其可正确对高于120华氏度、低于-60华氏度的数值进行符号化渲染 - 2022年4月22日：将「最低气温」图层的默认可见性设为关闭，初始加载时仅显示最高气温图层 - 2022年4月21日：新增「预报时段编号·间隔」字段，为数据时间线提供替代查询方式 本服务的数据更新间隔为：每小时1次。 ### 数据来源 本数据源自国家数字预报数据库（National Digital Forecast Database, NDFD），该库旨在通过中央节点提供数字化气象预报服务。NDFD可生成各类气象要素的网格化预报，其包含由国家气象局（National Weather Service, NWS）野外办公室与国家环境预报中心（National Centers for Environmental Prediction, NCEP）协同产出的无缝拼接数字化预报图集。上述所有机构均隶属于美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）。 #### 夜间最低气温数据源 - 美国本土：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.mint.bin - 阿拉斯加：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.alaska/VP.001-003/ds.mint.bin - 夏威夷：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.hawaii/VP.001-003/ds.mint.bin - 关岛：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.guam/VP.001-003/ds.mint.bin - 波多黎各：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.puertori/VP.001-003/ds.mint.bin #### 日间最高气温数据源 - 美国本土：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.maxt.bin - 阿拉斯加：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.alaska/VP.001-003/ds.maxt.bin - 夏威夷：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.hawaii/VP.001-003/ds.maxt.bin - 关岛：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.guam/VP.001-003/ds.maxt.bin - 波多黎各：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.puertori/VP.001-003/ds.maxt.bin ### 其他NDFD数据获取方式 如何获取其他NDFD数据？本原始数据通过聚合实时馈送（Aggregated Live Feeds）方法下载并解析，所得信息可通过ArcGIS Server发布为地图服务，或用于更新ArcGIS Online与ArcGIS Enterprise中的托管要素服务（Hosted Feature Services）。 ### 图层用途 本要素服务适用于数据探索与可视化操作。用户可通过点击地图识别要素，查看预配置的弹出窗口；启用时间动画后，可通过时间滑块查看支持时间维度的数据。 ### 免责声明 本地图仅用于信息展示，未进行7×24小时的准确性与时效性监控。若您希望接收潜在问题警报，或仅需了解本服务的下一次更新时间，请访问我们的实时馈送状态页面。