A temperature sensor for accurately measuring a temperature, such as that of a fluid where the temperature is changing, can include a housing with an exterior surface extending between a first end and a second end. The temperature sensor housing can include a set of exterior grooves, which provides for coupling a set of temperature sensor probes along the exterior of the housing with a probe extending at the first end. Additionally, a set of recesses can be formed in the first end for positioning the probes within the recesses. Furthermore, the interior of the housing can be hollow, with a second type of probe extending through the interior between the first end and the second end.