If you have 4 thermistors arranged in series/parallel and you place the pairs of series connected thermistors together, the overall resistance will follow a pattern similar to that of a single thermistor placed in an environment with the average temperature (where average has an undefined meaning but both arms have equal impact).
Tho simplify this, instead of four 10k thermistors, you could use two 20k thermistors in parallel.
To extend this further, you could use 3 30k thermistors or 4 40k thermistors. (neither 30k or 40k are values you're likely to find)
A single 40k thermistor in parallel with a 13.33k thermistor would also acct in some respects like a single 10k thermistor, except that the lower value thermistor would have about three times the effect on the overall as the 40k thermistor.
While that works in theory, getting thermistors of those values would require(probably) connecting several in series/parallel.
There is also a question as to whether the averaging would do what you expect.
Assuming the averaging does what I expect, then with the thermostat set for 24C, the two locations could be 24 and 24, or 23 and 25, or 26 and 22