Temperature readings are way off. - Raspberry Pi Forums

hello everyone,

glad able install our school weather station when did, week ago, because since snow has fallen on calgary, canada , weather office reports current temperature of -20c. feels -20c outside.

however, raspberry pi weather station multiple temperature sensors disagree official weather report:

• ambient temp reports -2.68c,
  bmp temp reports -1.20c
  ground temp (probe within conduit 20cm underground , touches soil) reports 4.31c.

tricks or suggestions calibrate these readings?

i have same problem. ambient temperature high 5 degrees , humidity low! suggestion appreciated.

raspberrypi