The effect of temperature on the MC of wood as measured by nuclear magnetic resonance (NMR) was investigated. The MC of yellow birch and Douglas-fir specimens was changed between zero and 40 percent, stepwise, the temperature, also stepwise, between -60° and 100°C. Each specimen, at a known MC, was sealed in a sample holder and placed in an NMR probe in which the temperature was set by a temperature controller. The results show that the integrated absorption intensity of the NMR narrow line is independent of the temperature between -30° and 100°C. Below about -30°C the integrated absorption intensity decreases with the temperature. The line shape is not standard. For every MC, both the derivative and root-mean-square line widths are large at temperatures below -30°C; they decrease to a minimum, and then increase slightly with an increase in temperature. The NMR spectral parameters are discussed in terms of dipole-dipole interaction between protons of the sorbed water. -- AATA