diff --git a/docs/project-state.md b/docs/project-state.md
index aeff01f..f2a72f9 100644
--- a/docs/project-state.md
+++ b/docs/project-state.md
@@ -163,4 +163,4 @@ Examples:
 5. Add config backup/restore.
 6. Improve BMS out-of-range behavior without changing NimBLE connect timeout.
 
-- Fixed WebUI temperature probe scan by registering `/temps/scan`, `/temps/assign`, and `/temps/clear` firmware routes.\n\n- Added per-temperature-sensor `weather` flag and WebUI outside temperature badge with emoji thresholds: below 50°F ice, 50-74°F happy, 75-84°F sun, and 85°F+ fire.\n\n- Improved WebUI temperature sensor config checkbox layout with compact On/Weather controls.\n\n- Temperature probe assignment now enforces one logical slot per physical DS18B20 address; assigning a probe to a new slot clears the old slot mapping.\n
\ No newline at end of file
+- Fixed WebUI temperature probe scan by registering `/temps/scan`, `/temps/assign`, and `/temps/clear` firmware routes.\n\n- Added per-temperature-sensor `weather` flag and WebUI outside temperature badge with emoji thresholds: below 50°F ice, 50-74°F happy, 75-84°F sun, and 85°F+ fire.\n\n- Improved WebUI temperature sensor config checkbox layout with compact On/Weather controls.\n\n- Temperature probe assignment now enforces one logical slot per physical DS18B20 address; assigning a probe to a new slot clears the old slot mapping.\n\n- Added per-slot WebUI Clear buttons for temperature probe assignments using the existing `/temps/clear` API.\n
\ No newline at end of file
diff --git a/firmware/esp32/overland-controller/overland-controller.ino b/firmware/esp32/overland-controller/overland-controller.ino
index 182996a..ea1e60c 100644
--- a/firmware/esp32/overland-controller/overland-controller.ino
+++ b/firmware/esp32/overland-controller/overland-controller.ino
@@ -499,6 +499,26 @@ async function assignTemp(id,index){
   alert("Temp probe assigned to "+id);
 }
 
+async function clearTempAssignment(id){
+  if(!confirm("Clear probe assignment for "+id+"?")) return;
+
+  const r=await fetch("/temps/clear",{
+    method:"POST",
+    headers:{"Content-Type":"application/json"},
+    body:JSON.stringify({id:id})
+  });
+
+  if(!r.ok){
+    const msg=await r.text();
+    alert("Failed to clear temp assignment: "+msg);
+    return;
+  }
+
+  await fetch("/config/save",{method:"POST"});
+  await load();
+  alert("Temp probe assignment cleared for "+id);
+}
+
 async function restartController(){
   if(!confirm("Restart the controller now?")) return;
   await fetch("/system/restart",{method:"POST"});
@@ -548,6 +568,7 @@ function renderConfigControls(data){
             <input id="tempWeather${i}" type="checkbox" ${t.weather?"checked":""}>
             Weather
           </label>
+          <button class="off" onclick="clearTempAssignment('${t.id}')">Clear</button>
         </div>
       </div>`).join("");
   }