Dennis Mattinson / Sierra Atmospheric Forecaster September 30
Area Forecast Discussion


Owens Valley / Mammoth Lakes / Mono County / Death Valley


Dennis Mattinson / Sierra Atmospheric Forecaster

Synopsis - TUE SEP 30 2025

A few showers yesterday, leading to mostly sunny skies today, as our elongated trough from the PACNW sets up to our East over the Great Basin. After that (Wednesday / Thursday) a secondary cold front reaches the CA coast, bringing a slight chance of a shower or two over higher terrain, particularly to our North.

-DMATT

Area Wide Temperatures Today:

Bishop: 81 / 44


Big Pine: 80 / 50


Independence: 80 / 53


Lone Pine: 79 / 54


Olancha: 82 / 57


Mammoth Lakes: 55 / 38


Death Valley: 101 / 75 https://sierrawave.net/dennis-mattinson-sierra-atmospheric-forecaster-september-30/

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