diff --git a/game/scripts/interface/calendar.rpy b/game/scripts/interface/calendar.rpy
index 6a1e3f08..bd5a436a 100644
--- a/game/scripts/interface/calendar.rpy
+++ b/game/scripts/interface/calendar.rpy
@@ -1,9 +1,11 @@
 init python:
-    class Calendar(object):
-        def __init__(self):
-            pass
+    class Calendar():
+        periods = ("Janemar", "Aprimju", "Juliasep", "Octobrinde")
+        weekdays = ("Monday", "Tuesday", "Wednsday", "Thursday", "Friday", "Saturday", "Sunday")
+        _day = 0
 
-        def get_schedule(self, span=35):
+        @staticmethod
+        def get_schedule(span=35):
             contents = {i: "" for i in range(span)}
 
             # Add moon cycles
@@ -14,31 +16,60 @@ init python:
                     contents[i] += "🌓"
                 # elif (game.day % 60 == 30) # Blood moon
 
+            forecast = Weather.forecast(span)
+            for i, v in forecast.items():
+                if v == "clear":
+                    contents[i] += "☀️"
+                elif v == "cloudy":
+                    contents[i] += "⛅"
+                elif v == "overcast":
+                    contents[i] += "☁️"
+                elif v in ("blizzard", "snow"):
+                    contents[i] += "🌨️"
+                elif v == "rain":
+                    contents[i] += "🌧️"
+                elif v == "storm":
+                    contents[i] += "🌩️"
+
             # Add letters
             letters = mailbox.get_letters(True)
             for i in letters:
-                contents[game.day+i.wait] += "✉️"
+                if (day := game.day+i.wait) < span+1:
+                    contents[day] += "✉️"
 
             # Add parcels
             parcels = mailbox.get_parcels(True)
             for i in parcels:
-                contents[game.day+i.wait] += "📦"
+                if (day := game.day+i.wait) < span+1:
+                    contents[day] += "📦"
+
 
             return contents
 
-        def get_weekday(self, n):
-            weekdays = ("Monday", "Tuesday", "Wednsday", "Thursday", "Friday", "Saturday", "Sunday")
+        @staticmethod
+        def get_weekday(n=None):
+            if n is None:
+                n = game.day
 
-            return weekdays[n % 7]
+            return Calendar.weekdays[n % 7]
 
-default calendar = Calendar()
+        @staticmethod
+        def get_period(n=None):
+
+            if n is None:
+                n = game.day
+
+            return Calendar.periods[(n // 30) % 4]
 
 label calendar:
     call screen calendar
     jump main_room_menu
 
 screen calendar:
-    default contents = calendar.get_schedule().items()
+    default contents = Calendar.get_schedule().items()
+    default period = Calendar.get_period()
+
+    text "[period]" align (0.5, 0.1) color "#fff" size 24
     grid 7 6:
         style "empty"
         align (0.5, 0.5)
diff --git a/game/scripts/interface/weather.rpy b/game/scripts/interface/weather.rpy
new file mode 100644
index 00000000..dec95ca2
--- /dev/null
+++ b/game/scripts/interface/weather.rpy
@@ -0,0 +1,65 @@
+init python:
+    class Weather():
+        weather_types = ("clear", "cloudy", "overcast", "blizzard", "snow", "storm", "rain")
+        weather_weights = {
+            "Janemar": (8, 9, 10, 3, 4, 7, 7),
+            "Aprimju": (9, 10, 9, 2, 3, 8, 8),
+            "Juliasep": (10, 10, 8, 1, 2, 6, 9),
+            "Octobrinde": (6, 7, 9, 9, 10, 6, 6),
+        }
+        _weather = None
+
+        @staticmethod
+        def _interpolate_weights(day, period):
+            current_weights = Weather.weather_weights[period]
+            current_index = Calendar.periods.index(period)
+
+            next_index = (current_index + 1) % len(Calendar.periods)
+            next_weights = Weather.weather_weights[Calendar.periods[next_index]]
+
+            interpolation_factor = (day / 30) * 0.25
+
+            # Interpolate between current season and next season
+            adjusted_weights = tuple(
+                max(0.01, (1 - interpolation_factor) * current_weight + interpolation_factor * next_weights[i])
+                for i, current_weight in enumerate(current_weights)
+            )
+
+            return adjusted_weights
+
+        @staticmethod
+        def get_weather():
+            return Weather._weather
+
+        @staticmethod
+        def set_weather(value=None):
+            if value is None or value == "random":
+                period = Calendar.get_period()
+                weights = Weather._interpolate_weights(game.day, period)
+                rand = renpy.random.Random(seed=game.day)
+                value = rand.choices(Weather.weather_types, weights=weights)[0]
+
+            elif value not in Weather.weather_types:
+                raise ValueError(f"Unsupported weather type: {value!r}")
+
+            Weather._weather = value
+            return value
+
+        weather = property(get_weather, set_weather)
+
+        @staticmethod
+        def forecast(span=35):
+            forecast = {}
+            start_day = game.day - (game.day % 30)
+            period = Calendar.get_period()
+
+            for i in range(span):
+                day = start_day + i
+                weights = Weather._interpolate_weights(day, period)
+                rand = renpy.random.Random(seed=day)
+                value = rand.choices(Weather.weather_types, weights=weights)[0]
+
+                forecast[i] = value
+
+            return forecast
+
diff --git a/game/scripts/inventory/game.rpy b/game/scripts/inventory/game.rpy
index d7a512b8..906a9301 100644
--- a/game/scripts/inventory/game.rpy
+++ b/game/scripts/inventory/game.rpy
@@ -54,17 +54,11 @@ init -100 python:
 
         @property
         def weather(self):
-            return self._weather
+            return Weather.get_weather()
 
         @weather.setter
         def weather(self, value):
-            if value == "random":
-                value = renpy.random.choices(self.weather_types, weights=self.weather_weights)[0]
-
-            if not value in self.weather_types:
-                raise ValueError(f"Unsupported weather type: {value!r}")
-
-            self._weather = value
+            Weather.set_weather(value)
             self.moon = (self.day % 7 == 0)
 
 screen gold(old, new):