  The Muon Telescope is a muography experiment for imaging volcanoes in
Colombia. It consists of a scintillator tracking system and a water Cherenkov
detector used for particle deposited energy measurement. The MuTe operates
autonomously in high altitude environments where the temperature gradient
reaches up to $10$$^{\circ}$C. In this work, we characterize the breakdown
voltage, gain, and noise of the telescope silicon photomultipliers for
temperature variations spanning $0$ to $40$$^{\circ}$C. We demonstrated that
the discrimination threshold for the MuTe hodoscope must be above 5 pe to avoid
contamination due to the SiPM dark count, crosstalk, and afterpulsing. We also
assess the MuTe counting rate depending on day-night temperature variations.
