Every morning when the sun rises, send a chat announcement with the forcecast for the day.  I would guess the current weather + next cycle would be announced.  So if it is currently raining when the sun rises but the next queued weather is clear, then the chat messag would be something like "Heavy rains this morning with a chance of Clear skies this afternoon or evening.  Maybe an optional command to query the weather report at any time so players can see what the near future weather will look like.