Temperature Monitoring

[nick@xxxxxxxxxxxxxxx]

Lots in the archive about this, but nothing that quite fits....

I have a Comfort which will accept a variable (0 to +5 volt) input
as an indication of (for example) temperature.

So, I need something that can sit outside and deliver to Comfort a
voltage somewhere between 0 and 5 depending on the temperature.
Ideally, I'm looking at something like 0v = -10 Centigrade and 5v =
30 Centigrade.  In other words, a sensible spread of voltage across
the likely spectrum of temperatures here in the UK.

I do software not hardware and I'm stuck!

Ideas welcome - I can buy or, within reason, build.  I can't design!

Thanks in advance,

Nick