diff --git a/typeclasses/rooms_weather.py b/typeclasses/rooms_weather.py
index 53ecb21..cb60864 100755
--- a/typeclasses/rooms_weather.py
+++ b/typeclasses/rooms_weather.py
@@ -147,6 +147,9 @@ class TimeWeatherRoom(Room):
         any arguments and keyword arguments (hence the *args, **kwargs
         even though we don't actually use them in this example)
         """
+        # only update 10 % of the time
         if random.random() < 0.1:
-            # only update 20 % of the time
-            self.msg_contents("|w%s|n\n" % choose_weather_message())
+            msg = choose_weather_message()
+            if self.db.previous_weather != msg:
+                self.db.previous_weather = msg
+                self.msg_contents(f"|w{msg}|n\n")