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Alta Sierra, California 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Alta Sierra CA
National Weather Service Forecast for: Alta Sierra CA
Issued by: National Weather Service Sacramento, CA
Updated: 12:21 am PDT Jun 6, 2025
 
Overnight

Overnight: Clear, with a steady temperature around 61. Calm wind.
Clear
Friday

Friday: Sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.
Sunny
Friday
Night
Friday Night: Clear, with a low around 61. Calm wind.
Clear
Saturday

Saturday: Sunny, with a high near 89. Calm wind becoming west southwest around 6 mph in the afternoon.
Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 62. West southwest wind around 5 mph becoming calm  in the evening.
Mostly Clear
Sunday

Sunday: Sunny, with a high near 89.
Sunny
Sunday
Night
Sunday Night: Mostly clear, with a low around 62.
Mostly Clear
Monday

Monday: Sunny, with a high near 89.
Sunny
Monday
Night
Monday Night: Clear, with a low around 60.
Clear
Lo 61 °F Hi 86 °F Lo 61 °F Hi 89 °F Lo 62 °F Hi 89 °F Lo 62 °F Hi 89 °F Lo 60 °F

 

Overnight
 
Clear, with a steady temperature around 61. Calm wind.
Friday
 
Sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
 
Clear, with a low around 61. Calm wind.
Saturday
 
Sunny, with a high near 89. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
 
Mostly clear, with a low around 62. West southwest wind around 5 mph becoming calm in the evening.
Sunday
 
Sunny, with a high near 89.
Sunday Night
 
Mostly clear, with a low around 62.
Monday
 
Sunny, with a high near 89.
Monday Night
 
Clear, with a low around 60.
Tuesday
 
Sunny, with a high near 89.
Tuesday Night
 
Clear, with a low around 60.
Wednesday
 
Sunny, with a high near 89.
Wednesday Night
 
Clear, with a low around 59.
Thursday
 
Sunny, with a high near 85.

 

Forecast from NOAA-NWS for Alta Sierra CA.

Weather Forecast Discussion
089
FXUS66 KSTO 052033
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
133 PM PDT Thu Jun 5 2025

.DISCUSSION...

.SYNOPSIS...
Warm and dry weather continues today, with a warm-up expected over
the weekend, with likely triple digit temperatures and Major
HeatRisk in parts of the northern Sacramento Valley. Periodically
breezy winds continuing into next week. Daily afternoon/evening
mountain thunderstorm chances (10-15%) will continue today and
through the weekend over the High Sierra.

&&

.KEY MESSAGES...

* Today-Tuesday:

 -Slightly cooler temperatures today, before high temperatures
  follow a warming trend Friday and into early next week with
  Moderate HeatRisk and some areas of Major HeatRisk

 --Probability of Valley High Temperatures > 95F:
  ---Northern/Central Sacramento Valley: 75-100%
  ---Delta, S. Sacramento Valley, N. San Joaquin Valley: 40-80%

 --Probability of Valley High Temperatures > 100F:
  ---Northern/Central Sacramento Valley: 40-70%, Saturday-Monday

 -Chances for isolated afternoon/early evening mountain showers
  and thunderstorms:
--Today-Saturday: 15-25%, South of US 50 along the Sierra Crest.
--Sunday-Monday: 10-20%, Along the Sierra Crest

.CHANGES FROM PREVIOUS FORECAST...

 -Probability for temperatures over 100F have increased slightly
  in the northern Sacramento Valley

&&

.AVIATION...
VFR conditions prevail over interior NorCal next 24 hours.
Surface winds generally below 12 kts, except in the vicinity of
the Delta where surface winds could get up to 25 kts between 22Z
Thursday and 06Z Friday. Additionally, there is a 15-25% chance of
isolated showers or thunderstorms over the Sierra south of US 50
until and 03Z Friday.

&&

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

&&

$$
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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