Eli5: Why do weather forecasts differ so much from one site to another?

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Its 11:30am and I wanted to check the forecast for this afternoon. One site says it’ll be a 45% chance of rain starting at 5pm, and another site says it’ll be clear until 8pm. How can it be so different when it’s only a few hours away?

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Anonymous 0 Comments

I have seen torrential downpour across the road from my place and not a drop at my place.

Tornados can also destroy one house and 2 houses away could have no damage at all.

Not all weather sites have monitoring stations everywhere and pick close ones.

Also with some apps I can pick a city name and it will show the center of the city or I can use the precise location and it picks the closest one to me.

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