how much rain fell last night

It is not possible to know exactly how much rain fell at your specific location last night from this chat alone, because access to live, location‑based weather data is required and that is not available here.
Quick answer
To find out how much rain fell last night where you are, you will need to check a recent‑conditions or rainfall‑totals source that uses your city or ZIP/postcode. These services read data from radar and official gauges to estimate the last 24‑hour precipitation for your exact area.
Where you can check
Use one or more of these options (they work in most regions):
- A “24‑hour rainfall totals by ZIP code” style site or app that lets you type in your postal code and see the last‑day total at or near your location.
- Your national or regional meteorological service page that lists “rainfall since midnight” or “precipitation last 24 hours” for nearby weather stations.
- Popular weather apps (many have a “past 24 hours” or “yesterday’s weather” panel with measured precipitation).
If you tell your nearest town/city or ZIP/postcode and country, a more tailored way to look this up can be suggested (for example, which national weather site section to open).