Why has the weather permanently stopped on mincraft?

In my Minecraft world (single player), it used to rain all the time. Then, all of a sudden, nothing! No rain, thunder, snow… Anything! I do have cheats enabled, if that makes any difference. I never messed with weather commands.

I have my home and farm currently set up in a grassy biome. Day and night still occur, but it's ALWAYS clear weather.

Some people are telling me just to wait and it will rain, but believe me, it's been many, many, MANY days. I've had this game going for more than a year (real days), and I can't remember the last time it's rained.

I'm about 500-1000 chunks from my hard spawn point (very first spawn point), but that wouldn't make any difference, would it?

Thanks!

Added (1). I know that I can put in a code to make it rain, but that's only a one time deal, and it doesn't fix the actual issue. I want to know why the program all of a sudden decided to stop sending rain automatically.

I think that I read somewhere that it should rain on average about once every 7 game days. Well, it's been about 1000-2000 game days since it rained last in my world. What's up with that?

It's a random script that determines when and where it will rain, if you really want it to rain that bad just type /toggledownfall or /toggle downfall I can't remember the command exactly. It will start raining after a few seconds.

I've never encountered that problem. Most of the time, when I'm in grassy biomes it rains every 3 or 4 days. You may need to relocate… Try going to other biomes, as well, see if it's a persistent issue.