Mountain House, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

485
FXUS66 KSTO 041936
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1236 PM PDT Sat Apr 4 2026

.KEY MESSAGES...

 - Dry and warm weather expected into early next week with Minor
   HeatRisk.

 - Cooler temperatures and unsettled weather mid to late next week
   with rain, thunderstorms, and high-elevation snow.

&&

.DISCUSSION...

...Today through Early Next Week...
Winds have generally decreased returning to lighter, variable
winds this weekend. Above normal temperatures and dry conditions
are anticipated across the region into early next week as ridging
remains in place. Daytime highs will be 10-20 degrees above normal
through early next week. High temperatures will be into low to
mid 80s in the Valley today through Monday, with Widespread Minor
HeatRisk in the Valley, Delta and foothills. Sunday will the
warmest day over the next several afternoons before trending
cooler next week. Individuals should practice heat safety and use
caution and life jackets near cold area waterways.

...Mid to Late Week...
Ensembles depict a troughing pattern developing across the area
by mid to late week, bringing cooler temperatures and unsettled
weather conditions. Confidence is still low with this system.
Highest chances for light precipitation appears to be over the
northern Sacramento Valley, foothills, and mountains, with the
latest NBM highlighting a 50-80% chance of precipitation greater
than 0.25 inches for those areas Wednesday into Saturday AM,
highest over the Sierra. Wednesday - Thursday are depicted as the
wettest days so far with lingering mountain showers on Friday. NBM
probabilities indicate the potential for thunderstorms each day
from Wednesday to Friday around 10-25%, highest on Wednesday.
Stay tuned for updates as the forecast continues to evolve.

&&

.AVIATION...

Widespread VFR conditions expected over the next 24 hours. Winds
less than 12 kts through 18Z Sunday. Over the mountains, gusts 15
to 20 kts at times after 06Z Sunday.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$