diff --git a/Calendar/WeatherInterface.py b/Calendar/WeatherInterface.py
new file mode 100644
index 0000000..4ba606c
--- /dev/null
+++ b/Calendar/WeatherInterface.py
@@ -0,0 +1,12 @@
+from WeatherForecast import WeatherForecast
+
+class WeatherInterface (object):
+    """Interface for fetching and processing weather forecast information."""
+    def is_available (self):
+        raise NotImplementedError("Functions needs to be implemented")
+
+    def get_forecast_in_days (self, offset_by_days):
+        raise NotImplementedError("Functions needs to be implemented")
+
+    def get_today_forecast (self):
+        raise NotImplementedError("Functions needs to be implemented")
\ No newline at end of file