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Solana Beach, California 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Donner Summit CA
National Weather Service Forecast for: Donner Summit CA
Issued by: National Weather Service Sacramento, CA
Updated: 12:21 am PDT Jul 28, 2025
 
Overnight

Overnight: Mostly clear, with a low around 45. Calm wind.
Mostly Clear

Monday

Monday: Sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.
Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 47. Light and variable wind.
Mostly Clear

Tuesday

Tuesday: A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm.  Sunny, with a high near 74. Calm wind becoming west southwest around 6 mph in the afternoon.  Chance of precipitation is 20%.
Slight Chance
Showers then
Slight Chance
T-storms
Tuesday
Night
Tuesday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 47. West southwest wind around 6 mph becoming calm  in the evening.
Slight Chance
Showers

Wednesday

Wednesday: A chance of showers, with thunderstorms also possible after 11am.  Partly sunny, with a high near 69. Chance of precipitation is 40%.
Chance
Showers then
Chance
T-storms
Wednesday
Night
Wednesday Night: A 20 percent chance of showers before 11pm.  Mostly clear, with a low around 46.
Slight Chance
Showers then
Mostly Clear
Thursday

Thursday: Sunny, with a high near 71.
Sunny

Thursday
Night
Thursday Night: Mostly clear, with a low around 46.
Mostly Clear

Lo 45 °F Hi 71 °F Lo 47 °F Hi 74 °F Lo 47 °F Hi 69 °F Lo 46 °F Hi 71 °F Lo 46 °F

 

Overnight
 
Mostly clear, with a low around 45. Calm wind.
Monday
 
Sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
 
Mostly clear, with a low around 47. Light and variable wind.
Tuesday
 
A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 74. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
 
A 20 percent chance of showers. Mostly cloudy, with a low around 47. West southwest wind around 6 mph becoming calm in the evening.
Wednesday
 
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 69. Chance of precipitation is 40%.
Wednesday Night
 
A 20 percent chance of showers before 11pm. Mostly clear, with a low around 46.
Thursday
 
Sunny, with a high near 71.
Thursday Night
 
Mostly clear, with a low around 46.
Friday
 
Sunny, with a high near 71.
Friday Night
 
Mostly clear, with a low around 46.
Saturday
 
Sunny, with a high near 72.
Saturday Night
 
Mostly clear, with a low around 47.
Sunday
 
Sunny, with a high near 72.

 

Forecast from NOAA-NWS for Donner Summit CA.

Weather Forecast Discussion
310
FXUS66 KSTO 272026
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
126 PM PDT Sun Jul 27 2025

For additional details on weather and expected impacts over the
next 7 days, please visit weather.gov/sto/briefing.

.DISCUSSION...

.SYNOPSIS...
Chances for afternoon and evening mountain thunderstorms this
week, with the highest chances today and around mid-week.
Otherwise, near to below- normal temperatures expected into next
week breezy onshore winds at times.

&&

.KEY MESSAGES...

* Today:
 - Chances (15-30%) for isolated to scattered mountain showers and
   thunderstorms this afternoon and evening. Highest potential
   over the Southern Cascades / Sierra crest and Coastal Range,
   mainly from Plumas County northward.
 - Main storm hazards include lightning, brief heavy rain, gusty
   winds, small hail, and possible fire starts.
 - Elevated fire weather conditions are expected in the mountains
   into the due to the lightning threat and any strikes outside
   the main precipitation core will pose the threat for fire
   starts.
 - Afternoon highs in the 80s and low 90s throughout the Valley as
   below normal highs continue.

* Monday-Thursday:
 - Mountain thunderstorm potential will generally remain outside
   of the area early this week, but isolated thunderstorms could
   develop over the Coast Range Monday afternoon and evening.
 - Mountain thunderstorm chances (10-25%) expected during the
   afternoon and evening hours this week, with storm coverage
   increasing by mid-week as a trough moves through the region.
 - Slight warming trend through early this week, but highs will
   remain below normal. Expect Valley highs in the 90s Monday and
   Tuesday.
 - Periodically breezy onshore flow expected during the afternoons
   and evenings.

.Changes from previous forecast...
 - Minimal changes from the previous forecast.

&&

.AVIATION...

Mostly VFR conditions expected over the next 24 hours across
Interior NorCal. Isolated to scattered mountain thunderstorms may
cause MVFR/IFR conditions through 03z Monday. Isolated
showers/thunderstorms possible in the northern Sacramento Valley
from 21Z Sunday to 01Z Monday. For the Valley, winds generally
less than 12 kts with gusts up to 15 kts between 22Z Sunday and
03Z Monday. For the Delta vicinity, sustained winds 10 to 20 kts
with gusts 20 to 25 kts at times through 12Z Monday. Potential for
MVFR ceilings from 12Z to 16Z Monday in the Delta.

&&

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

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








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