diff --git a/esphome/components/mopeka_pro_check/mopeka_pro_check.cpp b/esphome/components/mopeka_pro_check/mopeka_pro_check.cpp
index 9527f09f5..42d61f81a 100644
--- a/esphome/components/mopeka_pro_check/mopeka_pro_check.cpp
+++ b/esphome/components/mopeka_pro_check/mopeka_pro_check.cpp
@@ -116,7 +116,7 @@ bool MopekaProCheck::parse_device(const esp32_ble_tracker::ESPBTDevice &device)
 
   // Get temperature of sensor
   if (this->temperature_ != nullptr) {
-    uint8_t temp_in_c = this->parse_temperature_(manu_data.data);
+    int8_t temp_in_c = this->parse_temperature_(manu_data.data);
     this->temperature_->publish_state(temp_in_c);
   }
 
@@ -145,7 +145,7 @@ uint32_t MopekaProCheck::parse_distance_(const std::vector<uint8_t> &message) {
                      (MOPEKA_LPG_COEF[0] + MOPEKA_LPG_COEF[1] * raw_t + MOPEKA_LPG_COEF[2] * raw_t * raw_t));
 }
 
-uint8_t MopekaProCheck::parse_temperature_(const std::vector<uint8_t> &message) { return (message[2] & 0x7F) - 40; }
+int8_t MopekaProCheck::parse_temperature_(const std::vector<uint8_t> &message) { return (message[2] & 0x7F) - 40; }
 
 SensorReadQuality MopekaProCheck::parse_read_quality_(const std::vector<uint8_t> &message) {
   // Since a 8 bit value is being shifted and truncated to 2 bits all possible values are defined as enumeration
diff --git a/esphome/components/mopeka_pro_check/mopeka_pro_check.h b/esphome/components/mopeka_pro_check/mopeka_pro_check.h
index 4cbe8f2af..41fb31215 100644
--- a/esphome/components/mopeka_pro_check/mopeka_pro_check.h
+++ b/esphome/components/mopeka_pro_check/mopeka_pro_check.h
@@ -61,7 +61,7 @@ class MopekaProCheck : public Component, public esp32_ble_tracker::ESPBTDeviceLi
 
   uint8_t parse_battery_level_(const std::vector<uint8_t> &message);
   uint32_t parse_distance_(const std::vector<uint8_t> &message);
-  uint8_t parse_temperature_(const std::vector<uint8_t> &message);
+  int8_t parse_temperature_(const std::vector<uint8_t> &message);
   SensorReadQuality parse_read_quality_(const std::vector<uint8_t> &message);
 };