Monthly outlook for San Marcos, CA: average high 76°, average low 60.1°. That is 3.9° above the climate normal for November. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 8 November (87.6°), the coolest 20 November (56.3°).
76°/60.1°
Average high / low
+3.9°
Above normal
3 / 2
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 November – 16 November
79.2°
69.7°
+5.3°
17 November – 26 November
70.7°
67.6°
+1.7°
27 November – 6 December
at normal
65.5°
—
November records over 66 years
90.9°1 November 1966All-time high
33.4°19 November 1994All-time low
Climate normals and records are computed from the nearest reference point — Vista (5 mi).
Sun, 0888° / 63°0
88 °
San Marcos, Sunday, 8 November
Clear. High 88°, low 63°.
Pressure30.00 inHg
Wind2.3 mph NW
Humidity18%
Visibility6.2 mi
Dew point39°
Mon, 0986° / 60°0
86 °
San Marcos, Monday, 9 November
Clear. High 86°, low 60°.
Pressure30.00 inHg
Wind7.8 mph W
Humidity30%
Visibility6.2 mi
Dew point49°
Tue, 1084° / 61°0
84 °
San Marcos, Tuesday, 10 November
Clear. High 84°, low 61°.
Pressure30.03 inHg
Wind6.5 mph W
Humidity26%
Visibility6.2 mi
Dew point46°
Wed, 1182° / 63°0
82 °
San Marcos, Wednesday, 11 November
Clear. High 82°, low 63°.
Pressure30.03 inHg
Wind5.5 mph W
Humidity30%
Visibility6.2 mi
Dew point47°
Thu, 1280° / 62°0
80 °
San Marcos, Thursday, 12 November
Clear. High 80°, low 62°.
Pressure29.94 inHg
Wind7.5 mph W
Humidity25%
Visibility—
Dew point37°
Fri, 1383° / 63°0
83 °
San Marcos, Friday, 13 November
Overcast. High 83°, low 63°.
Pressure29.83 inHg
Wind8.6 mph E
Humidity23%
Visibility—
Dew point37°
Sat, 1468° / 62°0.37
68 °
San Marcos, Saturday, 14 November
Rain. High 68°, low 62°.
Pressure29.85 inHg
Wind12.1 mph S
Humidity68%
Visibility—
Dew point56°
Sun, 1571° / 60°0.11
71 °
San Marcos, Sunday, 15 November
Light rain. High 71°, low 60°.
Pressure29.97 inHg
Wind9.6 mph SW
Humidity55%
Visibility—
Dew point50°
Mon, 1667° / 60°0.09
67 °
San Marcos, Monday, 16 November
Light rain. High 67°, low 60°.
Pressure30.12 inHg
Wind12.5 mph W
Humidity61%
Visibility—
Dew point52°
Tue, 1768° / 58°0
68 °
San Marcos, Tuesday, 17 November
Overcast. High 68°, low 58°.
Pressure30.12 inHg
Wind6.2 mph W
Humidity54%
Visibility—
Dew point47°
Wed, 1868° / 59°0.03
68 °
San Marcos, Wednesday, 18 November
Light rain. High 68°, low 59°.
Pressure30.06 inHg
Wind12.1 mph W
Humidity66%
Visibility—
Dew point53°
Thu, 1967° / 58°0.01
67 °
San Marcos, Thursday, 19 November
Light rain. High 67°, low 58°.
Pressure30.03 inHg
Wind8.7 mph W
Humidity55%
Visibility—
Dew point47°
Fri, 2072° / 56°0
72 °
San Marcos, Friday, 20 November
Clear. High 72°, low 56°.
Pressure30.06 inHg
Wind7.2 mph W
Humidity29%
Visibility—
Dew point33°
Sat, 2175° / 58°0
75 °
San Marcos, Saturday, 21 November
Clear. High 75°, low 58°.
Pressure30.09 inHg
Wind7.4 mph W
Humidity16%
Visibility—
Dew point21°
Sun, 2274° / 59°0
74 °
San Marcos, Sunday, 22 November
Clear. High 74°, low 59°.
Pressure30.06 inHg
Wind6 mph W
Humidity16%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2367° / 48°0.01
67 °
San Marcos, Monday, 23 November
Climate normal for this date — 60-year average.
Average high67°
Average low48°
Average precipitation0.01 in
Chance of precipitation5%
Record high88° (2017)
Record low39° (1999)
Tue, 2468° / 47°0.02
68 °
San Marcos, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high68°
Average low47°
Average precipitation0.02 in
Chance of precipitation13%
Record high83° (1975)
Record low40° (1999)
Wed, 2567° / 48°0.07
67 °
San Marcos, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high67°
Average low48°
Average precipitation0.07 in
Chance of precipitation12%
Record high85° (1977)
Record low36° (2010)
Thu, 2667° / 47°0.07
67 °
San Marcos, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high67°
Average low47°
Average precipitation0.07 in
Chance of precipitation20%
Record high84° (2014)
Record low35° (2010)
Fri, 2766° / 46°0.04
66 °
San Marcos, Friday, 27 November
Climate normal for this date — 60-year average.
Average high66°
Average low46°
Average precipitation0.04 in
Chance of precipitation17%
Record high85° (2014)
Record low37° (1994)
Sat, 2866° / 46°0.09
66 °
San Marcos, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high66°
Average low46°
Average precipitation0.09 in
Chance of precipitation20%
Record high82° (1977)
Record low37° (1976)
Sun, 2965° / 46°0.1
65 °
San Marcos, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high65°
Average low46°
Average precipitation0.1 in
Chance of precipitation25%
Record high80° (1977)
Record low35° (2010)
Mon, 3065° / 46°0.09
65 °
San Marcos, Monday, 30 November
Climate normal for this date — 60-year average.
Average high65°
Average low46°
Average precipitation0.09 in
Chance of precipitation18%
Record high78° (1977)
Record low34° (2004)
Tue, 0165° / 45°0.02
65 °
San Marcos, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high65°
Average low45°
Average precipitation0.02 in
Chance of precipitation12%
Record high76° (1976)
Record low34° (2004)
Wed, 0266° / 45°0.01
66 °
San Marcos, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high66°
Average low45°
Average precipitation0.01 in
Chance of precipitation7%
Record high77° (1969)
Record low35° (2004)
Thu, 0366° / 46°0.05
66 °
San Marcos, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high66°
Average low46°
Average precipitation0.05 in
Chance of precipitation15%
Record high75° (1979)
Record low36° (2004)
Fri, 0465° / 45°0.07
65 °
San Marcos, Friday, 4 December
Climate normal for this date — 60-year average.
Average high65°
Average low45°
Average precipitation0.07 in
Chance of precipitation20%
Record high80° (1979)
Record low35° (2011)
Sat, 0565° / 46°0.06
65 °
San Marcos, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high65°
Average low46°
Average precipitation0.06 in
Chance of precipitation18%
Record high78° (1979)
Record low35° (2011)
Sun, 0665° / 46°0.1
65 °
San Marcos, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high65°
Average low46°
Average precipitation0.1 in
Chance of precipitation15%
Record high79° (1979)
Record low35° (2011)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for San Marcos, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in San Marcos, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.