Dry and mild conditions continue for the week. Nights will be cold in low lying areas. Low temperatures in higher elevation locations such as Mammoth Pass are relatively warm, dropping only to the upper 20’s compared to the low 20’s at mid slope locations such as Mammoth Lakes.
Weatherwest.com has a thorough discussion on "the Ridiculously Resilient Ridge remains resolutely recalcitrant." The same ridge was present last year (2012-2013) and is still entrenched over the western U.S.
With a huge ridge over the western U.S. the dry spell is expected to continue for at least the next week. Seasonal predictions are more uncertain than weather prediction, and the pattern can shift quickly and bring a lot of snow in a short period of time, but there is such a large snowpack deficit, it would take many, many multi day storms to bring the snowpack back to near average.
An interesting aspect of jet stream behavior is that when the western U.S. is under a ridge, the eastern U.S. is usually under a trough (and vice versa). This is because the typical distance between long-wave ridges and troughs at jet stream level is about the distance across the contiguous U.S.