San Ysidro, CA Weather Forecast and Current Conditions

WEATHER ALERTS - Dense Fog Advisory

Current Conditions From Nearby Local Station

Clear with Mist and Fog 53°F
Feels Like 53°F  
Humidity 96% Dew Point 52°F Wind E 3 MPH Barometer 30.02 in.
Visibility 2.5 mi.
Report from a NOAA weather station 1.9 mi. NW of central San Ysidro
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Point Forecast at a Glance

FriDec 12
Fri Dec 12: Partly Cloudy, Low 53F
 
53
SatDec 13
Sat Dec 13: Mostly Sunny, High 73F, Low 54F
73
54
SunDec 14
Sun Dec 14: Mostly Cloudy, High 72F, Low 53F
72
53
MonDec 15
Mon Dec 15: Mostly Cloudy, High 76F, Low 54F
76
54
TueDec 16
Tue Dec 16: Sunny, High 77F, Low 54F
77
54
WedDec 17
Wed Dec 17: Mostly Sunny, High 73F, Low 54F
73
54
ThuDec 18
Thu Dec 18: Mostly Sunny, High 74F, Low 54F
74
54

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7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 72°F to 77°F. Dry weather expected throughout the week.

Climate Context

This week's forecast shows temperatures running 9°F above the historical average for December. Normal highs for this period are around 65°F with lows around 43°F.

This Date in Weather History

1915 - A heavy snowstorm kicked off the snowiest winter in modern records for western New England.

More on this and other weather history

San Ysidro, CA 7 Day Weather Forecast Details

Friday Dec 12

Partly Cloudy

Night: Partly cloudy, with a low around 53. Calm wind.

Saturday Dec 13

Mostly Sunny

Day: Mostly sunny, with a high near 73. Light northwest wind becoming west 5 to 10 mph in the afternoon.

Partly Cloudy

Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 54. Calm wind.

Sunday Dec 14

Mostly Cloudy

Day: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 72. Northeast wind 5 to 10 mph becoming northwest in the afternoon.

Partly Cloudy

Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 53. Northeast wind around 5 mph.

Monday Dec 15

Mostly Cloudy

Day: Patchy fog before 10am. Otherwise, sunny, with a high near 76.

Mostly Clear

Night: Mostly clear, with a low around 54.

Tuesday Dec 16

Sunny

Day: Sunny, with a high near 77.

Partly Cloudy

Night: Partly cloudy, with a low around 54.

Wednesday Dec 17

Mostly Sunny

Day: Mostly sunny, with a high near 73.

Partly Cloudy

Night: Partly cloudy, with a low around 54.

Thursday Dec 18

Mostly Sunny

Day: Mostly sunny, with a high near 74.

Partly Cloudy

Night: Partly cloudy, with a low around 54.

Friday Dec 19

Mostly Sunny

Day: Mostly sunny, with a high near 73.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.