diff --git a/internal/pkg/domain/weather_condition.go b/internal/pkg/domain/weather_condition.go
index dea11f1..b0c22bd 100644
--- a/internal/pkg/domain/weather_condition.go
+++ b/internal/pkg/domain/weather_condition.go
@@ -10,3 +10,31 @@ const (
 	WeatherConditionSnow     WeatherCondition = "SNOW"
 	WeatherConditionRainSnow WeatherCondition = "RAIN_SNOW"
 )
+
+// IsWorseThan은 현재 날씨 조건이 other보다 나쁜 조건인지 확인합니다.
+// 우선순위: RAIN > RAIN_SNOW > SNOW > CLOUDY > CLEAR.
+func (c WeatherCondition) IsWorseThan(other WeatherCondition) bool {
+	return c.priority() > other.priority()
+}
+
+// priority는 날씨 조건의 우선순위를 반환합니다.
+// 우선순위가 높을수록 더 나쁜 날씨 조건입니다.
+// 우선순위: RAIN(4) > RAIN_SNOW(3) > SNOW(2) > CLOUDY(1) > CLEAR(0) > UNKNOWN(-1).
+func (c WeatherCondition) priority() int {
+	switch c {
+	case WeatherConditionClear:
+		return 0
+	case WeatherConditionCloudy:
+		return 1
+	case WeatherConditionSnow:
+		return 2 //nolint:mnd
+	case WeatherConditionRainSnow:
+		return 3 //nolint:mnd
+	case WeatherConditionRain:
+		return 4 //nolint:mnd
+	case WeatherConditionUnknown:
+		return -1
+	default:
+		return -1
+	}
+}