diff --git a/CHANGELOG.md b/CHANGELOG.md
index e29c827..7a4a30a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,15 @@
 
 Toutes les modifications importantes du projet sont consignées ici. Le format s’inspire de [Keep a Changelog](https://keepachangelog.com/fr/1.1.0/) et le projet suit le [versionnage sémantique](https://semver.org/lang/fr/).
 
+## [1.0.0-rc.21] — 2026-09-15
+
+### Suivi de la température
+
+- ajout de la température à chaque contrôle d’animal pendant une tournée, préremplie à 38,5 °C et modifiable ;
+- validation des températures enregistrées entre 30 et 45 °C ;
+- regroupement du poids et de la température dans un graphique médical commun, avec une échelle dédiée à chaque unité ;
+- reprise dans la courbe des températures saisies dans les notes médicales et pendant les tournées.
+
 ## [1.0.0-rc.20] — 2026-09-13
 
 ### Localisation des animaux
diff --git a/HISTORIQUE.md b/HISTORIQUE.md
index 29736fe..e2934d6 100644
--- a/HISTORIQUE.md
+++ b/HISTORIQUE.md
@@ -89,3 +89,7 @@ Ajout d’une date et d’une heure modifiables aux contrôles médicaux, avec r
 ## `1.0.0-rc.20` — Localisations cohérentes
 
 Simplification des lieux affichés dans la fiche, conservation de l’adresse actuelle et réparation des coordonnées manquantes après un import ou un placement.
+
+## `1.0.0-rc.21` — Température pendant les tournées
+
+Ajout d’une température préremplie à 38,5 °C lors du contrôle de chaque animal et affichage conjoint des courbes de poids et de température dans son dossier médical.
diff --git a/README.md b/README.md
index 914bc81..45914f2 100644
--- a/README.md
+++ b/README.md
@@ -200,7 +200,7 @@ L’option `--apply` ne doit être utilisée qu’après lecture des rapports. L
 
 ## État du projet
 
-La candidate actuelle est `1.0.0-rc.20`. La branche 1.0 est gelée fonctionnellement : seuls les défauts bloquants découverts pendant les validations terrain sont corrigés avant `1.0.0`.
+La candidate actuelle est `1.0.0-rc.21`. La branche 1.0 est gelée fonctionnellement : seuls les défauts bloquants découverts pendant les validations terrain sont corrigés avant `1.0.0`.
 
 Le contrôle de stabilisation est disponible dans [docs/AUDIT-1.0.md](docs/AUDIT-1.0.md).
 
diff --git a/VERSION b/VERSION
index dca2922..fee2ed6 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.0-rc.20
+1.0.0-rc.21
diff --git a/app/Controllers/AnimalBrowseActions.php b/app/Controllers/AnimalBrowseActions.php
index 86e657b..845e5f9 100644
--- a/app/Controllers/AnimalBrowseActions.php
+++ b/app/Controllers/AnimalBrowseActions.php
@@ -704,6 +704,21 @@ trait AnimalBrowseActions
         $weightsStmt->execute([':id' => $id]);
         $weights = $weightsStmt->fetchAll();
 
+        $temperaturesStmt = $db->prepare("
+        SELECT measured_at, value FROM (
+            SELECT noted_at AS measured_at, temperature_c AS value
+            FROM medical_notes
+            WHERE animal_id = :medical_id AND temperature_c IS NOT NULL
+            UNION ALL
+            SELECT observation.checked_at AS measured_at, observation.temperature_c AS value
+            FROM care_round_observations observation
+            WHERE observation.animal_id = :round_id AND observation.temperature_c IS NOT NULL
+        )
+        ORDER BY datetime(measured_at) ASC
+        ");
+        $temperaturesStmt->execute([':medical_id' => $id, ':round_id' => $id]);
+        $temperatures = $temperaturesStmt->fetchAll(PDO::FETCH_ASSOC);
+
         $stmt = $db->prepare("
         SELECT value
         FROM measurements
@@ -952,6 +967,7 @@ trait AnimalBrowseActions
             'adopters' => $adopters,
             'death' => $death,
             'weights' => $weights,
+            'temperatures' => $temperatures,
             'lastWeight' => $lastWeight,
             'prevWeight' => $prevWeight,
             'photos' => $photos,
diff --git a/app/Controllers/CareRoundsController.php b/app/Controllers/CareRoundsController.php
index 64d74ad..5e899b1 100644
--- a/app/Controllers/CareRoundsController.php
+++ b/app/Controllers/CareRoundsController.php
@@ -139,6 +139,18 @@ final class CareRoundsController
             $value = (string) ($_POST[$field] ?? $opts[0]);
             $values[$field] = in_array($value, $opts, true) ? $value : $opts[0];
         }
+        $temperatureInput = str_replace(',', '.', trim((string) ($_POST['temperature_c'] ?? '')));
+        if (!is_numeric($temperatureInput)) {
+            http_response_code(400);
+            echo h(t('care.invalid_temperature'));
+            return;
+        }
+        $temperature = (float) $temperatureInput;
+        if ($temperature < 30 || $temperature > 45) {
+            http_response_code(400);
+            echo h(t('care.invalid_temperature'));
+            return;
+        }
         $db->prepare(
             'UPDATE care_rounds SET performed_by_user_id=COALESCE(performed_by_user_id,:user) WHERE id=:id',
         )->execute([':user' => Auth::id(), ':id' => $roundId]);
@@ -220,7 +232,7 @@ final class CareRoundsController
         $db->beginTransaction();
         try {
             $stmt = $db->prepare(
-                "INSERT INTO care_round_observations(round_id,animal_id,food,water,urine,stool,general_state,comment,alert_signature) VALUES(:round,:animal,:food,:water,:urine,:stool,:general,:comment,:signature) ON CONFLICT(round_id,animal_id) DO UPDATE SET food=excluded.food,water=excluded.water,urine=excluded.urine,stool=excluded.stool,general_state=excluded.general_state,comment=excluded.comment,alert_signature=excluded.alert_signature,checked_at=datetime('now')",
+                "INSERT INTO care_round_observations(round_id,animal_id,food,water,urine,stool,general_state,temperature_c,comment,alert_signature) VALUES(:round,:animal,:food,:water,:urine,:stool,:general,:temperature,:comment,:signature) ON CONFLICT(round_id,animal_id) DO UPDATE SET food=excluded.food,water=excluded.water,urine=excluded.urine,stool=excluded.stool,general_state=excluded.general_state,temperature_c=excluded.temperature_c,comment=excluded.comment,alert_signature=excluded.alert_signature,checked_at=datetime('now')",
             );
             $stmt->execute([
                 ':round' => $roundId,
@@ -230,6 +242,7 @@ final class CareRoundsController
                 ':urine' => $values['urine'],
                 ':stool' => $values['stool'],
                 ':general' => $values['general_state'],
+                ':temperature' => $temperature,
                 ':comment' => $comment ?: null,
                 ':signature' => $signature,
             ]);
diff --git a/app/Views/_animal_show_medical.php b/app/Views/_animal_show_medical.php
index 4bb698e..75a4211 100644
--- a/app/Views/_animal_show_medical.php
+++ b/app/Views/_animal_show_medical.php
@@ -235,14 +235,14 @@
 
     <div class="card mt-3">
         <div class="card-header">
-            <h3 class="card-title m-0"><?= h(t('animal.weight_evolution')) ?></h3>
+            <h3 class="card-title m-0"><?= h(t('animal.measurements_evolution')) ?></h3>
         </div>
 
-        <?php if (!$weights): ?>
-        <div class="card-body text-muted"><?= h(t('animal.no_weight')) ?></div>
+        <?php if (!$weights && !$temperatures): ?>
+        <div class="card-body text-muted"><?= h(t('animal.no_measurement')) ?></div>
         <?php else: ?>
         <div style="height:260px">
-            <canvas id="weightChart"></canvas>
+            <canvas id="healthMeasurementsChart"></canvas>
         </div>
 
         <?php endif; ?>
diff --git a/app/Views/_animal_show_modals.php b/app/Views/_animal_show_modals.php
index 7df107c..972364f 100644
--- a/app/Views/_animal_show_modals.php
+++ b/app/Views/_animal_show_modals.php
@@ -944,25 +944,47 @@ $currentTime = date('H:i');
 </script>
 <script>
     (function() {
-        const el = document.getElementById('weightChart');
+        const el = document.getElementById('healthMeasurementsChart');
         if (!el) return;
 
-        const rows = <?= json_encode($weights ?? [], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) ?> ;
+        const weights = <?= json_encode($weights ?? [], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) ?>;
+        const temperatures = <?= json_encode($temperatures ?? [], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) ?>;
+        const normalizeDate = value => String(value || '').replace(' ', 'T');
+        const labels = [...new Set([
+            ...weights.map(row => normalizeDate(row.measured_at)),
+            ...temperatures.map(row => normalizeDate(row.measured_at))
+        ])].filter(Boolean).sort();
+        const valuesByDate = rows => new Map(rows.map(row => [normalizeDate(row.measured_at), Number(row.value)]));
+        const weightValues = valuesByDate(weights);
+        const temperatureValues = valuesByDate(temperatures);
 
-        // labels = dates, data = poids
-        const labels = rows.map(r => (r.measured_at || '').slice(0, 10)); // YYYY-MM-DD
-        const data = rows.map(r => Number(r.value));
-
-        // Chart.js default color (on ne fixe rien volontairement)
         new Chart(el, {
             type: 'line',
             data: {
-                labels,
-                datasets: [{
+                labels: labels.map(value => new Date(value).toLocaleString(undefined, {
+                    dateStyle: 'short',
+                    timeStyle: 'short'
+                })),
+                datasets: [
+                {
                     label: <?= json_encode(t('chart.weight'), JSON_UNESCAPED_UNICODE) ?> ,
-                    data,
+                    data: labels.map(label => weightValues.get(label) ?? null),
+                    borderColor: '#206bc4',
+                    backgroundColor: '#206bc4',
                     tension: 0.25,
-                    pointRadius: 2
+                    pointRadius: 3,
+                    spanGaps: true,
+                    yAxisID: 'weight'
+                },
+                {
+                    label: <?= json_encode(t('chart.temperature'), JSON_UNESCAPED_UNICODE) ?>,
+                    data: labels.map(label => temperatureValues.get(label) ?? null),
+                    borderColor: '#d63939',
+                    backgroundColor: '#d63939',
+                    tension: 0.25,
+                    pointRadius: 3,
+                    spanGaps: true,
+                    yAxisID: 'temperature'
                 }]
             },
             options: {
@@ -974,12 +996,25 @@ $currentTime = date('H:i');
                     }
                 },
                 scales: {
-                    y: {
+                    weight: {
+                        type: 'linear',
+                        position: 'left',
                         title: {
                             display: true,
                             text: 'kg'
                         }
                     },
+                    temperature: {
+                        type: 'linear',
+                        position: 'right',
+                        grid: {
+                            drawOnChartArea: false
+                        },
+                        title: {
+                            display: true,
+                            text: '°C'
+                        }
+                    },
                     x: {
                         title: {
                             display: true,
diff --git a/app/Views/animal_show.php b/app/Views/animal_show.php
index 777d7ca..05c5b34 100644
--- a/app/Views/animal_show.php
+++ b/app/Views/animal_show.php
@@ -4,6 +4,7 @@
 /** @var array $treatments */
 /** @var array $vaccinations */
 /** @var array $weights */
+/** @var array $temperatures */
 /** @var array adoption */
 
 require_once __DIR__ . '/../Services/IcadService.php';
diff --git a/app/Views/care_round.php b/app/Views/care_round.php
index 2a3ff4d..5cea18e 100644
--- a/app/Views/care_round.php
+++ b/app/Views/care_round.php
@@ -347,6 +347,16 @@ $fieldOptions = [
                                         type="radio" name="<?= h($field) ?>" value="<?= h($value) ?>"
                                         <?= (($obs[$field] ?? array_key_first($options)) === $value) ? 'checked' : '' ?>><span><?= h($label) ?></span></label><?php endforeach; ?>
                             </div><?php endforeach; ?>
+                            <div class="mb-2">
+                                <label class="form-label fw-bold" for="temperature-<?= (int)$a['id'] ?>">🌡️ <?= h(t('care.temperature')) ?></label>
+                                <div class="input-group">
+                                    <input class="form-control" id="temperature-<?= (int)$a['id'] ?>"
+                                        name="temperature_c" type="number" min="30" max="45" step="0.1"
+                                        inputmode="decimal" required
+                                        value="<?= h(number_format((float)($obs['temperature_c'] ?? 38.5), 1, '.', '')) ?>">
+                                    <span class="input-group-text">°C</span>
+                                </div>
+                            </div>
                             <?php foreach ($treatmentsByAnimal[(int)$a['id']] ?? [] as $t): ?><div
                                 class="card card-sm bg-purple-lt mb-2">
                                 <div class="card-body py-2"><strong>💊 <?= h($t['medication_name']) ?></strong>
diff --git a/app/Views/evolutions.php b/app/Views/evolutions.php
index d89f344..a0e2506 100644
--- a/app/Views/evolutions.php
+++ b/app/Views/evolutions.php
@@ -31,10 +31,10 @@
     <div class="col-lg-6">
         <section class="card h-100">
             <div class="card-body">
-                <span class="badge bg-blue-lt mb-2">1.0.0-rc.20</span>
-                <h3>Localisations cohérentes</h3>
-                <p class="text-muted">Lieu de récupération et lieu actuel clairement distingués, avec réparation
-                    des coordonnées manquantes après un import ou un placement.</p>
+                <span class="badge bg-blue-lt mb-2">1.0.0-rc.21</span>
+                <h3>Température pendant les tournées</h3>
+                <p class="text-muted">Température proposée à 38,5 °C pendant chaque contrôle et graphique médical
+                    commun pour suivre son évolution avec celle du poids.</p>
             </div>
         </section>
     </div>
diff --git a/migrations/095_care_round_temperature.sql b/migrations/095_care_round_temperature.sql
new file mode 100644
index 0000000..83901be
--- /dev/null
+++ b/migrations/095_care_round_temperature.sql
@@ -0,0 +1 @@
+ALTER TABLE care_round_observations ADD COLUMN temperature_c REAL;
diff --git a/resources/lang/en.php b/resources/lang/en.php
index 85d8c68..f00c501 100644
--- a/resources/lang/en.php
+++ b/resources/lang/en.php
@@ -199,4 +199,9 @@ return [
  'updates.download_log'=>'Download technical log',
  'updates.log_missing'=>'No update log is available.',
  'error.invalid_medical_datetime'=>'Enter a valid check-up date and time.',
+ 'animal.measurements_evolution'=>'Weight and temperature trends',
+ 'animal.no_measurement'=>'No weight or temperature measurement recorded.',
+ 'care.temperature'=>'Temperature',
+ 'care.invalid_temperature'=>'Temperature must be between 30 and 45 °C.',
+ 'chart.temperature'=>'Temperature (°C)',
 ];
diff --git a/resources/lang/fr.php b/resources/lang/fr.php
index 928c849..375c96c 100644
--- a/resources/lang/fr.php
+++ b/resources/lang/fr.php
@@ -199,4 +199,9 @@ return [
  'updates.download_log'=>'Télécharger le journal technique',
  'updates.log_missing'=>'Aucun journal de mise à jour n’est disponible.',
  'error.invalid_medical_datetime'=>'Indiquez une date et une heure de contrôle valides.',
+ 'animal.measurements_evolution'=>'Évolution du poids et de la température',
+ 'animal.no_measurement'=>'Aucune mesure de poids ou de température enregistrée.',
+ 'care.temperature'=>'Température',
+ 'care.invalid_temperature'=>'La température doit être comprise entre 30 et 45 °C.',
+ 'chart.temperature'=>'Température (°C)',
 ];
diff --git a/tests/run.php b/tests/run.php
index 2d29660..66c4864 100644
--- a/tests/run.php
+++ b/tests/run.php
@@ -68,6 +68,13 @@ try {
         $actual = (int) $db->query('SELECT COUNT(*) FROM _migrations')->fetchColumn();
         $assert($actual === $expected, "$actual/$expected migrations");
     });
+    $test('Les tournées peuvent enregistrer une température', function () use ($db, $assert): void {
+        $columns = array_column(
+            $db->query('PRAGMA table_info(care_round_observations)')->fetchAll(PDO::FETCH_ASSOC),
+            'name',
+        );
+        $assert(in_array('temperature_c', $columns, true), 'Colonne temperature_c absente');
+    });
     $test("Les voies d’administration des médicaments sont initialisées", function () use ($db, $assert): void {
         $routes = $db
             ->query('SELECT accro FROM ref_med_administration ORDER BY id')