San Ysidro, California 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Mostly Clear 72°F 22°C Heat Index: 72°F	Observed at: San Ysidro, CA	Elevation: 800 ft | 244 m
	Last Updated: July 29, 5:30 PM Timezone: GMT -5/-4
	Sky Conditions: Mostly Clear	Temperature: 72°F | 22°C
	Pressure: 29.44 in | 997 mb	Dewpoint: 66°F | 19°C
	Humidity: 80%	Wind: W 7 mph | W 11 kph
	Feels Like: 75°F | 24°C	Visibility: 35.5 mi | 57.1 km
	Lat/Long: 32.5555 | -117.0303	Sunrise: 6:00 AM   Sunset: 7:48 PM

7 Day Graphical Forecast

Valid: 5:33 PM 7/29/2026

Today Foggy 77 |65 °F 25 |18 °C 0% Chance Precipitation Thursday Foggy 77 |63 °F 25 |17 °C 1% Chance Precipitation Friday Foggy 85 |63 °F 29 |17 °C 0% Chance Precipitation Saturday Clear 86 |73 °F 30 |23 °C 0% Chance Precipitation Sunday Overcast 81 |72 °F 27 |22 °C 0% Chance Precipitation Monday Clear 80 |70 °F 27 |21 °C 0% Chance Precipitation Tuesday Mostly Clear 80 |71 °F 27 |21 °C 1% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:33 PM 7/29/2026

5 PM Mostly Clear 73 °F 0% Chance Precipitation

6 PM Mostly Clear 71 °F 0% Chance Precipitation

7 PM Partly Cloudy 69 °F 0% Chance Precipitation

8 PM Overcast 67 °F 0% Chance Precipitation

9 PM Overcast 66 °F 0% Chance Precipitation

10 PM Overcast 65 °F 0% Chance Precipitation

11 PM Overcast 65 °F 0% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for San Ysidro, CA - (Fahrenheit & Celsius) Valid: 5:33 PM 7/29/2026 Today Foggy with a high near 77°F [25°C]. WNW wind to around 11 mph [17 kph], with gusts to near 12 mph [19 kph]. Dewpoint near 66°F [19°C] with humidity of 96%. Pressure around 29.44 in [997 mb]. UV Index: 8.5. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Tonight Foggy with a low around 65°F [18°C]. WNW wind to around 11 mph [17 kph], with gusts to near 12 mph [19 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Foggy with a high near 77°F [25°C]. WNW wind to around 11 mph [17 kph], with gusts to near 12 mph [19 kph]. Dewpoint near 66°F [19°C] with humidity of 100%. Pressure around 29.44 in [997 mb]. UV Index: 8.5. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Night Foggy with a low around 63°F [17°C]. WNW wind to around 11 mph [17 kph], with gusts to near 12 mph [19 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Friday Foggy with a high near 85°F [29°C]. WNW wind to around 8 mph [14 kph], with gusts to near 7 mph [12 kph]. Dewpoint near 66°F [19°C] with humidity of 100%. Pressure around 29.44 in [997 mb]. UV Index: 8.45. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Night Foggy with a low around 63°F [17°C]. WNW wind to around 8 mph [14 kph], with gusts to near 7 mph [12 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Saturday Clear with a high near 86°F [30°C]. W wind to around 8 mph [13 kph], with gusts to near 7 mph [11 kph]. Dewpoint near 66°F [19°C] with humidity of 71%. Pressure around 29.44 in [997 mb]. UV Index: 8.5. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Saturday Night Clear with a low around 73°F [23°C]. W wind to around 8 mph [13 kph], with gusts to near 7 mph [11 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Sunday Overcast with a high near 81°F [27°C]. WSW wind to around 8 mph [13 kph], with gusts to near 5 mph [8 kph]. Dewpoint near 66°F [19°C] with humidity of 75%. Pressure around 29.44 in [997 mb]. UV Index: 8.5. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 72°F [22°C]. WSW wind to around 8 mph [13 kph], with gusts to near 5 mph [8 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 80°F [27°C]. WSW wind to around 8 mph [14 kph], with gusts to near 6 mph [9 kph]. Dewpoint near 66°F [19°C] with humidity of 79%. Pressure around 29.44 in [997 mb]. UV Index: 8.4. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 70°F [21°C]. WSW wind to around 8 mph [14 kph], with gusts to near 6 mph [9 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Tuesday Mostly Clear with a high near 80°F [27°C]. WSW wind to around 8 mph [13 kph], with gusts to near 8 mph [12 kph]. Dewpoint near 66°F [19°C] with humidity of 78%. Pressure around 29.44 in [997 mb]. UV Index: 8.35. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Tuesday Night Mostly Clear with a low around 71°F [21°C]. WSW wind to around 8 mph [13 kph], with gusts to near 8 mph [12 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for San Ysidro, CA

Today: 0.0 mm | 0.00 in

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.0 mm | 0.00 in

Saturday Night: 0.0 mm | 0.00 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for San Ysidro, CA

Today: WNW @ 17 kph | 11 mph

Tonight: WNW @ 17 kph | 11 mph

Thursday: WNW @ 17 kph | 11 mph

Thursday Night: WNW @ 17 kph | 11 mph

Friday: WNW @ 14 kph | 8 mph

Friday Night: WNW @ 14 kph | 8 mph

Saturday: W @ 13 kph | 8 mph

Saturday Night: W @ 13 kph | 8 mph

Sunday: WSW @ 13 kph | 8 mph

Sunday Night: WSW @ 13 kph | 8 mph

Monday: WSW @ 14 kph | 8 mph

Monday Night: WSW @ 14 kph | 8 mph

Tuesday: WSW @ 13 kph | 8 mph

Tuesday Night: WSW @ 13 kph | 8 mph

7 Day and Night - Maximum Humidity Forecast for San Ysidro, CA

Today: 96 %

Tonight: 96 %

Thursday: 100 %

Thursday Night: 100 %

Friday: 100 %

Friday Night: 100 %

Saturday: 71 %

Saturday Night: 71 %

Sunday: 75 %

Sunday Night: 75 %

Monday: 79 %

Monday Night: 79 %

Tuesday: 78 %

Tuesday Night: 78 %

7 Day and Night - Snowfall Totals Forecast for San Ysidro, CA

Today: 0.0 cm | 0.00 in

Tonight: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

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