The question is not that simple, and you may not like the answer.
Temperature changes do two things. The first has to do with pH meters that respond differently at different temperatures. What changes here is the slope of the relationship between the mv that the eelctrode reports, and the true pH.
When you set the first calibration point at pH 7, that point is fixed. Then when you set the second calibration point (say, 4 or 10), that determines the relationship for your meter between pH and the mv change reported by the electrode. That slope is about 54 mv/pH unit at 0 deg C, and 64 mv/pH unit at 50 deg C.
pH meters often allow that effect to be corrected for by adjusting a knob or setting the temperature. It is not, however, a simple change in pH units. If the pH is close to 7, the actuall correction is very small. If the pH is far from that, say 2 or 13, then the correction with temperature changes is large.
The other effect has to do with the buffers in the water itself, which can change their acidity with temperature changes. Some may effectively shift the water to lower pH as temperature rises, and some may shift it to highe rpH as temperature rises. Even more complicated, the ionization of water itself changes as temperature changes, and that really confounds pH changes with temperature.
This article has more:
Measuring pH with a Meter
http://www.advancedaquarist.com/issues/feb2004/chem.htm
and this one talks about buffers
A Comparison of pH Calibration Buffers
http://reefkeeping.com/issues/2005-02/rhf/index.htm
