National Weather Service Forecast for: 15 Miles ENE Jacumba CA
Issued by: National Weather Service Phoenix, AZ
Updated: 12:23 am PDT Aug 20, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 89. South wind around 5 mph becoming calm.
Partly Cloudy

 Thursday

Thursday: Sunny and hot, with a high near 110. Heat index values as high as 117. Light and variable wind becoming northeast 5 to 10 mph in the morning.
Hot

 Thursday
Night
Thursday Night: Mostly clear, with a low around 89. Breezy, with a west southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Mostly Clear
and Breezy
then Mostly
Clear
 Friday

Friday: Mostly sunny and hot, with a high near 110. Heat index values as high as 113. West southwest wind 5 to 10 mph becoming east northeast in the morning.
Hot

 Friday
Night
Friday Night: Mostly clear, with a low around 88. Breezy, with a west southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Clear
and Breezy
then Mostly
Clear
 Saturday

Saturday: Sunny and hot, with a high near 111. West southwest wind 5 to 10 mph becoming east northeast in the morning.
Hot

 Saturday
Night
Saturday Night: Mostly clear, with a low around 88. Breezy, with a west southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Clear
and Breezy
then Mostly
Clear
 Sunday

Sunday: A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny and hot, with a high near 110. West southwest wind around 10 mph becoming east southeast in the morning. Winds could gust as high as 20 mph.
Slight Chance
T-storms

 Sunday
Night
Sunday Night: A 10 percent chance of showers and thunderstorms before 11pm. Mostly clear, with a low around 88. Breezy, with a southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Slight Chance
T-storms and
Breezy then
Mostly Clear
Lo 89 °F Hi 110 °F Lo 89 °F Hi 110 °F Lo 88 °F Hi 111 °F Lo 88 °F Hi 110 °F Lo 88 °F

Extreme Heat Warning
 

Overnight
 
 Partly cloudy, with a low around 89. South wind around 5 mph becoming calm.
Thursday
 
 Sunny and hot, with a high near 110. Heat index values as high as 117. Light and variable wind becoming northeast 5 to 10 mph in the morning.
Thursday Night
 
 Mostly clear, with a low around 89. Breezy, with a west southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
 
 Mostly sunny and hot, with a high near 110. Heat index values as high as 113. West southwest wind 5 to 10 mph becoming east northeast in the morning.
Friday Night
 
 Mostly clear, with a low around 88. Breezy, with a west southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
 
 Sunny and hot, with a high near 111. West southwest wind 5 to 10 mph becoming east northeast in the morning.
Saturday Night
 
 Mostly clear, with a low around 88. Breezy, with a west southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
 
 A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny and hot, with a high near 110. West southwest wind around 10 mph becoming east southeast in the morning. Winds could gust as high as 20 mph.
Sunday Night
 
 A 10 percent chance of showers and thunderstorms before 11pm. Mostly clear, with a low around 88. Breezy, with a southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Monday
 
 A slight chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 109. West southwest wind 5 to 10 mph becoming east in the morning. Chance of precipitation is 20%.
Monday Night
 
 Mostly clear, with a low around 88. West southwest wind 5 to 10 mph.
Tuesday
 
 A 10 percent chance of showers and thunderstorms. Sunny and hot, with a high near 110. West wind 5 to 10 mph becoming east in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 89. West southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
 
 A 10 percent chance of showers and thunderstorms. Sunny and hot, with a high near 110. West southwest wind 5 to 10 mph becoming east in the morning.

 

Forecast from NOAA-NWS for 15 Miles ENE Jacumba CA.