<![CDATA[Significant Difference From US NWS Forecast Highs (NAM & GFS)]]>Hello there, I find Windy to be an excellent weather app but I am finding in the last 6 months that it consistently predicts daily highs about 3°F to 5° lower than the NWS when I am using the NAM Model. It is 5°F to 7°F using the GFS Model. I am using the same specifically mapped area in the model in Tucson, AZ for both the NWS and Windy. Any ideas why the difference please? Windy has a lot of wonderful features very well presented and a very quick website. However on a 110° degree day high temperature forecasts can be critical.
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Thank you and best regards,
Dan Mardock
Premium User

]]>https://community.windy.com/topic/30606/significant-difference-from-us-nws-forecast-highs-nam-gfsRSS for NodeSun, 09 Aug 2026 14:20:32 GMTSat, 30 Dec 2023 00:32:29 GMT60<![CDATA[Reply to Significant Difference From US NWS Forecast Highs (NAM & GFS) on Sun, 07 Jan 2024 16:06:10 GMT]]>@idefix37 Thank you.

]]>https://community.windy.com/post/174426https://community.windy.com/post/174426Sun, 07 Jan 2024 16:06:10 GMT<![CDATA[Reply to Significant Difference From US NWS Forecast Highs (NAM & GFS) on Sat, 30 Dec 2023 10:45:49 GMT]]>@dkmardock
Hi, the temperature differences are probably due to your location in the foothills. Some model grid points may be on the higher part of the terrain and the interpolation may not be as accurate as on a flat location.
Have you tried the HRRR model? Its higher resolution should give better results.
This website should allow you to understand what I mean. Enter your exact location.

]]>https://community.windy.com/post/173625https://community.windy.com/post/173625Sat, 30 Dec 2023 10:45:49 GMT