Measuring super cold temperatures and super low pressures

Any barometer I've seen only works up to 9km, and every digital temperature sensor I've seen only works down to -40c. Are there ways to measure air pressure bellow 300Pa, and temperatures below -40c digitally that is arduino compatible?

More detail:
I just found a DS18S20 which goes down to -55c, but i would prefer if it could go to -60c, since im expecting temperatures around -56c or less

With the right chip & right probe, you can get lower temps:
Same with pressure sensors:
May need some intermediate electronics to be Arduino compatible if you don't pick a part that with a digital output (I2C, SPI, serial, etc). and need to convert to a 0-5V analog signal that the Arduino can read.

I'm hoping to be able to get it to work with a library of some kind, but ill try my best to get them to work together on my own

You really need to google

K type shield arduino



pressure vacuum shield arduino

What is your electronics, programming, arduino, hardware experience?
Tom.... :slight_smile: