Zone Forecast Product
Issued by NWS San Diego, CA
Issued by NWS San Diego, CA
106 FPUS56 KSGX 180914 ZFPSGX Zone Forecast Product for Extreme Southwest California National Weather Service San Diego CA 214 AM PDT Mon Aug 18 2025 CAZ552-182115- Orange County Coastal Areas- Including the cities of Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, and San Clemente 214 AM PDT Mon Aug 18 2025 .TODAY...Mostly cloudy this morning...becoming mostly sunny. Highs 72 to 75 at the beaches to 76 to 81 farther inland and near higher coastal terrain. Areas of winds south to 10 mph. .TONIGHT...Mostly clear in the evening...becoming mostly cloudy overnight with patchy fog. Lows 61 to 65. Areas of winds south 10 mph. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 73 to 76 at the beaches to 78 to 83 farther inland and near higher coastal terrain. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 62 to 65. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light. .WEDNESDAY...Patchy fog in the morning. Partly cloudy. Highs 74 to 77 at the beaches to 80 to 85 farther inland and near higher coastal terrain. Light winds becoming west 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 62 to 66. .THURSDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 74 to 77 at the beaches to 81 to 86 farther inland and near higher coastal terrain. .THURSDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 68. .FRIDAY...Patchy fog in the morning. Partly cloudy. Highs around 80 at the beaches to 82 to 87 farther inland and near higher coastal terrain. .FRIDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows around 70. .SATURDAY...Patchy fog in the morning. Partly cloudy. Highs around 80 at the beaches to 81 to 86 farther inland and near higher coastal terrain. .SATURDAY NIGHT...Mostly clear in the evening...becoming mostly cloudy overnight with patchy fog. Lows around 68. .SUNDAY...Mostly cloudy with patchy fog in the morning...becoming partly cloudy. Highs 75 to 79 at the beaches to 81 to 86 farther inland and near higher coastal terrain. $$ CAZ554-182115- Orange County Inland Areas- Including the cities of Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 214 AM PDT Mon Aug 18 2025 .TODAY...Partly cloudy this morning...becoming mostly sunny. Highs around 80 towards the coast to 83 to 86 farther inland. Light winds becoming southwest 10 mph this afternoon. .TONIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 59 to 65. Areas of winds south to 10 mph in the evening becoming light. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming sunny. Highs 80 to 83 towards the coast to 86 farther inland. Light winds becoming southwest 10 mph in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 60 to 66. Areas of winds west to 10 mph in the evening becoming light. .WEDNESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 81 to 84 towards the coast to 90 farther inland. Light winds becoming southwest 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 61 to 66. .THURSDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 81 to 85 towards the coast to 88 to 92 farther inland. .THURSDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 67 to 71. .FRIDAY...Patchy fog in the morning. Partly cloudy. Highs 83 to 88 towards the coast to 90 to 93 farther inland. .FRIDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 67 to 71. .SATURDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 83 to 86 towards the coast to 90 farther inland. .SATURDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 70. .SUNDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 82 to 86 towards the coast to 90 farther inland. $$ CAZ043-182115- San Diego County Coastal Areas- Including the cities of Oceanside, Vista, Carlsbad, Encinitas, Chula Vista, National City, and San Diego 214 AM PDT Mon Aug 18 2025 .TODAY...Mostly cloudy this morning...becoming partly cloudy. Highs 70 to 75 near the coast to 76 to 81 inland. Light winds becoming west 10 mph this afternoon. .TONIGHT...Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows 60 to 64. Light winds. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 72 to 77 near the coast to 78 to 83 inland. Light winds becoming west 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows 60 to 65. Areas of winds west to 10 mph in the evening becoming light. .WEDNESDAY...Mostly cloudy with patchy fog in the morning... becoming partly cloudy. Highs 72 to 77 near the coast to 79 to 84 inland. Light winds becoming west 10 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows 61 to 65. .THURSDAY...Patchy fog in the morning. Partly cloudy. Highs 73 to 78 near the coast to 81 to 85 inland. .THURSDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows 66 to 69. .FRIDAY...Patchy fog in the morning. Partly cloudy. Highs 76 to 81 near the coast to 83 to 86 inland. .FRIDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows 66 to 70. .SATURDAY...Patchy fog in the morning. Partly cloudy. Highs 75 to 80 near the coast to 81 to 86 inland. .SATURDAY NIGHT...Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows 65 to 69. .SUNDAY...Mostly cloudy with patchy fog in the morning...becoming partly cloudy. Highs 75 to 80 near the coast to 81 to 85 inland. $$ CAZ050-182115- San Diego County Valleys- Including the cities of Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway 214 AM PDT Mon Aug 18 2025 .TODAY...Partly cloudy with patchy fog this morning...becoming mostly sunny. Highs 79 to 84 in the western valleys to 86 to 91 near the foothills. Light winds becoming west 10 mph this afternoon. .TONIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 58 to 62. Areas of winds west to 10 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs 81 to 86 in the western valleys to 87 to 92 near the foothills. Areas of winds west to 10 mph. .TUESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 59 to 64. Areas of winds west to 10 mph in the evening becoming light. .WEDNESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 82 to 87 in the western valleys to 90 to 95 near the foothills. Areas of winds west to 10 mph. .WEDNESDAY NIGHT...Mostly clear. Lows 61 to 69. .THURSDAY...Mostly sunny. Highs 84 to 89 in the western valleys to 93 to 98 near the foothills. .THURSDAY NIGHT...Mostly clear. Lows 66 to 71. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 86 to 90 in the western valleys to 93 to 98 near the foothills. .FRIDAY NIGHT...Partly cloudy. Lows around 70. .SATURDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs 84 to 89 in the western valleys to 91 to 96 near the foothills. .SATURDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 66 to 70. .SUNDAY...Partly cloudy. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs 84 to 88 in the western valleys to 90 to 95 near the foothills. $$ CAZ048-182115- San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny. Highs 90 to 97. Light winds becoming west 10 to 15 mph with gusts to 25 mph this afternoon. .TONIGHT...Mostly clear. Lows 58 to 64. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs 91 to 97. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 60 to 66. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs 94 to 101. Light winds becoming west 10 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 62 to 69. .THURSDAY...Mostly sunny. Highs 96 to 103. .THURSDAY NIGHT...Mostly clear. Lows 68 to 74. .FRIDAY...Mostly sunny in the morning...becoming partly cloudy. Highs 97 to 104. .FRIDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 68 to 73. .SATURDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs 95 to 102. .SATURDAY NIGHT...Mostly clear. Lows 67 to 72. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 94 to 101. $$ CAZ057-182115- Santa Ana Mountains and Foothills- 214 AM PDT Mon Aug 18 2025 .TODAY...Sunny, warmer. Highs 81 to 91. Light winds becoming west 10 to 15 mph this afternoon. .TONIGHT...Mostly clear. Lows 57 to 65. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs 83 to 93. Light winds becoming west 10 to 15 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 59 to 68. Areas of winds west 10 to 15 mph in the evening becoming light. .WEDNESDAY...Mostly sunny. Highs 86 to 96. Light winds becoming west 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 62 to 72. .THURSDAY...Mostly sunny. Highs 89 to 99. .THURSDAY NIGHT...Mostly clear. Lows 66 to 74. .FRIDAY...Mostly sunny in the morning...becoming partly cloudy. Highs 90 to 100. .FRIDAY NIGHT...Mostly clear. Lows 65 to 73. .SATURDAY...Mostly sunny in the morning...becoming partly cloudy. Highs 88 to 98. .SATURDAY NIGHT...Mostly clear. Lows 66 to 73. .SUNDAY...Mostly sunny. Highs 87 to 97. $$ CAZ055-182115- San Bernardino County Mountains- Including the cities of Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, and Wrightwood 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny, warmer. Highs 73 to 83 above 6000 feet to 80 to 90 below 6000 feet. Areas of winds south to 10 mph...becoming 10 to 15 mph with gusts to 25 mph this afternoon. Near ridge tops and along desert slopes, areas of winds south 10 to 15 mph with gusts to 25 mph. .TONIGHT...Clear. Lows 47 to 57 above 6000 feet to 56 to 66 below 6000 feet. Areas of winds south 10 to 15 mph. Gusts to 25 mph in the evening. .TUESDAY...Mostly sunny. Highs 74 to 84 above 6000 feet to 81 to 91 below 6000 feet. Areas of winds south to 10 mph...becoming 10 to 15 mph with gusts to 30 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 51 to 61 above 6000 feet to 59 to 69 below 6000 feet. Areas of winds south 10 to 15 mph. Gusts to 25 mph in the evening. .WEDNESDAY...Mostly sunny. Highs 77 to 87 above 6000 feet to 85 to 95 below 6000 feet. Areas of winds south 10 to 15 mph. Gusts to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 56 to 66. .THURSDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 79 to 89 above 6000 feet to 88 to 98 below 6000 feet. .THURSDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 60 to 70. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 79 to 89 above 6000 feet to 87 to 97 below 6000 feet. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows 59 to 69. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 76 to 86 above 6000 feet to 84 to 94 below 6000 feet. .SATURDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows 58 to 68. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs 75 to 85 above 6000 feet to 83 to 93 below 6000 feet. $$ CAZ056-182115- Riverside County Mountains- Including the city of Idyllwild-Pine Cove 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny. Highs 83 to 93. Areas of winds south to 10 mph becoming west 10 mph this afternoon. .TONIGHT...Clear. Lows 53 to 63. Areas of winds northwest to 10 mph. .TUESDAY...Sunny. Highs 84 to 94. Areas of winds south to 10 mph becoming west in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 55 to 65. Areas of winds west 10 to 15 mph. Gusts to 25 mph in the evening. .WEDNESDAY...Mostly sunny. Highs 87 to 97. Areas of winds south to 10 mph becoming west 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 58 to 68. .THURSDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 88 to 98. .THURSDAY NIGHT...Mostly clear. Lows 61 to 71. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 89 to 99. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 59 to 69. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 85 to 95. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 59 to 69. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 85 to 95. $$ CAZ058-182115- San Diego County Mountains- Including the cities of Julian and Pine Valley 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny. Highs 84 to 93. Areas of winds east to 10 mph becoming west with gusts to 25 mph this afternoon. .TONIGHT...Clear. Lows 56 to 66. Areas of winds west 10 to 15 mph with gusts to 25 mph. .TUESDAY...Mostly sunny. Highs 85 to 95. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 60 to 70. Areas of winds west 10 to 15 mph with gusts to 25 mph. .WEDNESDAY...Mostly sunny. Highs 88 to 98. Areas of winds west to 10 mph. .WEDNESDAY NIGHT...Mostly clear. Lows 63 to 73. .THURSDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 91 to 99. .THURSDAY NIGHT...Mostly clear. Lows 65 to 75. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 91 to 100. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 64 to 74. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 87 to 96. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 64 to 74. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 87 to 96. $$ CAZ060-182115- Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, Apple Valley, and Lucerne Valley 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny. Highs 95 to 101. Areas of winds west to 10 mph becoming south with gusts to 30 mph this afternoon. .TONIGHT...Clear. Lows 60 to 70. Areas of winds west 10 to 15 mph. Gusts to 30 mph...becoming 25 mph overnight. .TUESDAY...Mostly sunny. Highs 96 to 103. Areas of winds west to 10 mph...becoming south 10 to 20 mph with gusts to 30 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 62 to 72. Areas of winds west 10 to 20 mph. Gusts to 30 mph...becoming 25 mph overnight. .WEDNESDAY...Mostly sunny. Highs 99 to 105. Areas of winds west to 10 mph becoming south with gusts to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 67 to 76. .THURSDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 102 to 108. .THURSDAY NIGHT...Mostly clear. Lows 71 to 79. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 101 to 107. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 72 to 79. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 97 to 104. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 72 to 78. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs 97 to 104. $$ CAZ065-182115- San Gorgonio Pass near Banning- 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny. Highs around 99 through the pass to 103 to 106 in the northern Coachella Valley. Areas of winds west 10 to 15 mph with gusts to 25 mph becoming southeast with gusts to 30 mph this afternoon. .TONIGHT...Clear. Lows around 71 through the pass to 80 to 83 in the northern Coachella Valley. Areas of winds west 15 to 25 mph with gusts to 40 mph. .TUESDAY...Mostly sunny. Highs around 100 through the pass to 104 to 108 in the northern Coachella Valley. Areas of winds west 10 to 15 mph with gusts to 30 mph...becoming 15 to 25 mph with gusts to 35 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows around 74 through the pass to 84 in the northern Coachella Valley. Areas of winds west 20 to 30 mph. Gusts to 45 mph...becoming 40 mph overnight. .WEDNESDAY...Mostly sunny. Hot. Highs around 103 through the pass to 107 to 111 in the northern Coachella Valley. Areas of winds west 10 to 20 mph with gusts to 30 mph. .WEDNESDAY NIGHT...Mostly clear. Breezy. Lows 78 to 88. .THURSDAY...Mostly sunny. Hot. Highs around 105 through the pass to 109 to 112 in the northern Coachella Valley. .THURSDAY NIGHT...Mostly clear. Lows 80 to 90. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Hot. Highs around 105 through the pass to 109 to 112 in the northern Coachella Valley. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 78 to 88. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs around 102 through the pass to 104 to 107 in the northern Coachella Valley. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 78 to 87. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs around 102 through the pass to 105 to 109 in the northern Coachella Valley. $$ CAZ061-182115- Coachella Valley- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, and Coachella 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny. Highs 104 to 107. Areas of winds southeast to 10 mph. .TONIGHT...Mostly clear. Lows 76 to 81. Areas of winds northwest 10 to 15 mph with gusts to 30 mph. .TUESDAY...Mostly sunny. Highs 106 to 109. Light winds becoming southeast 10 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 78 to 84. Areas of winds northwest 10 to 20 mph. Gusts to 30 mph...becoming 25 mph overnight. .WEDNESDAY...Mostly sunny. Hot. Highs around 110. Areas of winds northwest to 10 mph becoming southeast 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 80 to 86. .THURSDAY...Mostly sunny. Hot. Highs 109 to 113. .THURSDAY NIGHT...Mostly clear. Lows 84 to 89. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Hot. Highs around 112. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 82 to 88. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 106 to 109. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 81 to 87. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 106 to 109. $$ CAZ062-182115- San Diego County Deserts- Including the city of Borrego Springs 214 AM PDT Mon Aug 18 2025 ...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... .TODAY...Sunny. Highs 104 to 108. Areas of winds east to 10 mph. .TONIGHT...Mostly clear. Lows 75 to 84. Areas of winds west 10 to 20 mph with gusts to 30 mph. .TUESDAY...Sunny, hot. Highs 106 to 110. Areas of winds east to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 79 to 87. Areas of winds west 10 to 20 mph. Gusts to 35 mph...becoming 25 mph overnight. .WEDNESDAY...Mostly sunny. Hot. Highs 108 to 112. Areas of winds southeast to 10 mph. .WEDNESDAY NIGHT...Mostly clear. Lows 81 to 89. .THURSDAY...Mostly sunny. Hot. Highs 110 to 113. .THURSDAY NIGHT...Mostly clear. Lows 84 to 92. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Hot. Highs 111 to 114. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 81 to 91. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs around 108. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear overnight. Lows 81 to 90. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Hot. Highs 106 to 110. $$