San Marcos, CA Weather Forecast | 10 Days
Updated: Mon Nov 2nd 2026 4:15 AM PST
Mon, 11-2
72°F
54°F
54°F
Tue, 11-3
72°F
55°F
55°F
Wed, 11-4
74°F
57°F
57°F
Thu, 11-5
75°F
57°F
57°F
Fri, 11-6
80°F
58°F
58°F
Sat, 11-7
80°F
60°F
60°F
Sun, 11-8
81°F
61°F
61°F
Mon, 11-9
78°F
63°F
63°F
Tue, 11-10
76°F
63°F
63°F
Wed, 11-11
70°F
59°F
59°F
Sunny
San Marcos CA Weather Forecast for Mon 11-2
Sunny with a high of 72°F and a low of 54°F. There's a very small chance of rainfall, only about 5%. Winds will be light at 9mph and gusts of 15.4mph at 3 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 77% at 10 PM and 37% being its lowest at 12 PM. Barometric pressure is its highest of 30.12 at 8 AM, a lowest point of 30.06 at 2 PM with an avg 30.09.
- HI: 72°F
- LO: 54°F
- Rain: 5%
- Snow: 0%
- Wind
8.7 mph - Humidity
61% avg. - UV Index
5 - Air QualityGood
- Sunrise
06:07 AM - Sunset
04:56 PM - Moonrise
Does not rise today - Moonset
01:06 PM - Moon Phase
Last Quarter - Hourly
Sunny
San Marcos CA Weather Forecast for Tue 11-3
Sunny with a high of 72°F and a low of 55°F. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 13mph on average and gusts of 23.3mph at 3 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 84% at 10 PM and 47% being its lowest at 11 AM. Barometric pressure is its highest of 30.08 at 7 AM, a lowest point of 29.96 at 11 PM with an avg 30.03.
- HI: 72°F
- LO: 55°F
- Rain: 6%
- Snow: 0%
- Wind
12.1 mph - Humidity
65% avg. - UV Index
4.9 - Air QualityGood
- Sunrise
06:08 AM - Sunset
04:55 PM - Moonrise
12:11 AM - Moonset
01:39 PM - Moon Phase
Waning Crescent - Hourly
Sunny
San Marcos CA Weather Forecast for Wed 11-4
Sunny with a high of 74°F and a low of 57°F. There might be light rainfall having a 17% chance. Winds will be light at 9mph and gusts of 17.9mph at 3 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 88% at 1 AM and 38% being its lowest at 2 PM. Barometric pressure is its highest of 29.96 at 1 AM, a lowest point of 29.84 at 2 PM with an avg 29.9.
- HI: 74°F
- LO: 57°F
- Rain: 17%
- Snow: 0%
- Wind
8.9 mph - Humidity
67% avg. - UV Index
4.5 - Air QualityModerate
- Sunrise
06:09 AM - Sunset
04:54 PM - Moonrise
01:19 AM - Moonset
02:10 PM - Moon Phase
Waning Crescent - Hourly
Sunny
San Marcos CA Weather Forecast for Thu 11-5
Sunny with a high of 75°F and a low of 57°F. There's a very small chance of rainfall, only about 6%. Winds will be light at 8mph and gusts of 18.1mph at 2 PM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 81% at 1 AM and 30% being its lowest at 12 PM. Barometric pressure is its highest of 30.01 at 10 PM, a lowest point of 29.87 at 3 AM with an avg 29.93.
- HI: 75°F
- LO: 57°F
- Rain: 6%
- Snow: 0%
- Wind
7.6 mph - Humidity
58% avg. - UV Index
4.5 - Air QualityModerate
- Sunrise
06:10 AM - Sunset
04:53 PM - Moonrise
02:25 AM - Moonset
02:39 PM - Moon Phase
Waning Crescent - Hourly
Smoky Haze
San Marcos CA Weather Forecast for Fri 11-6
Smoky Haze with a high of 80°F and a low of 58°F. There's a very small chance of rainfall, only about 1%. Winds will be light at 9mph and gusts of 17.7mph at 2 PM. Humidity levels should be comfortable, sitting around 48% on average, the maximum being 75% at 1 AM and 21% being its lowest at 11 AM. Barometric pressure is its highest of 30.02 at 7 AM, a lowest point of 29.93 at 2 PM with an avg 29.98.
- HI: 80°F
- LO: 58°F
- Rain: 1%
- Snow: 0%
- Wind
8.7 mph - Humidity
48% avg. - UV Index
7 - Air QualityUnhealthy for Sensitive Groups
- Sunrise
06:11 AM - Sunset
04:53 PM - Moonrise
03:32 AM - Moonset
03:10 PM - Moon Phase
Waning Crescent - Hourly
Sunny
San Marcos CA Weather Forecast for Sat 11-7
Sunny with a high of 80°F and a low of 60°F. There's a very small chance of rainfall, only about 1%. Winds will be light at 5mph and gusts of 11.5mph at 4 PM. Humidity levels should be comfortable, sitting around 41% on average, the maximum being 55% at 12 AM and 23% being its lowest at 10 AM. Barometric pressure is its highest of 29.99 at 10 AM, a lowest point of 29.92 at 4 PM with an avg 29.96.
- HI: 80°F
- LO: 60°F
- Rain: 1%
- Snow: 0%
- Wind
4.7 mph - Humidity
41% avg. - UV Index
7 - Air QualityTBA
- Sunrise
06:12 AM - Sunset
04:52 PM - Moonrise
04:38 AM - Moonset
03:42 PM - Moon Phase
New Moon - Hourly
Overcast
San Marcos CA Weather Forecast for Sun 11-8
Overcast with a high of 81°F and a low of 61°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 4mph and gusts of 10mph at 4 PM. Humidity levels should be comfortable, sitting around 38% on average, the maximum being 61% at 10 PM and 21% being its lowest at 10 AM. Barometric pressure is its highest of 29.99 at 11 PM, a lowest point of 29.92 at 4 PM with an avg 29.95.
- HI: 81°F
- LO: 61°F
- Rain: 4%
- Snow: 0%
- Wind
3.8 mph - Humidity
38% avg. - UV Index
7 - Air QualityTBA
- Sunrise
06:13 AM - Sunset
04:51 PM - Moonrise
05:46 AM - Moonset
04:18 PM - Moon Phase
New Moon - Hourly
Partly Cloudy
San Marcos CA Weather Forecast for Mon 11-9
Partly Cloudy with a high of 78°F and a low of 63°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 5mph and gusts of 12.3mph at 4 PM. Humidity levels should be comfortable, sitting around 45% on average, the maximum being 62% at 11 PM and 28% being its lowest at 10 AM. Barometric pressure is its highest of 30.03 at 9 PM, a lowest point of 29.97 at 4 PM with an avg 30.
- HI: 78°F
- LO: 63°F
- Rain: 4%
- Snow: 0%
- Wind
4.5 mph - Humidity
45% avg. - UV Index
7 - Air QualityTBA
- Sunrise
06:14 AM - Sunset
04:50 PM - Moonrise
06:53 AM - Moonset
04:59 PM - Moon Phase
New Moon - Hourly
Partly Cloudy
San Marcos CA Weather Forecast for Tue 11-10
Partly Cloudy with a high of 76°F and a low of 63°F. There's a moderate 36% chance of rainfall with an estimated 0.02in. Winds will be light at 7mph and gusts of 13.6mph at 4 PM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 85% at 11 PM and 41% being its lowest at 10 AM. Barometric pressure is its highest of 30.06 at 10 AM, a lowest point of 30.01 at 4 PM with an avg 30.03.
- HI: 76°F
- LO: 63°F
- Rain: 36% | est. 0.02in
- Snow: 0%
- Wind
6.3 mph - Humidity
60% avg. - UV Index
6 - Air QualityTBA
- Sunrise
06:14 AM - Sunset
04:50 PM - Moonrise
07:58 AM - Moonset
05:46 PM - Moon Phase
New Moon - Hourly
Isolated Showers
San Marcos CA Weather Forecast for Wed 11-11
Isolated Showers with a high of 70°F and a low of 59°F. Rainfall expected to have a 57% chance with an estimated 0.04in. Wind will be moderate, blowing around 12mph on average and gusts of 27.5mph at 4 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 85% at 1 AM and 49% being its lowest at 1 PM. Barometric pressure is its highest of 30.05 at 11 PM, a lowest point of 30 at 4 PM with an avg 30.03.
- HI: 70°F
- LO: 59°F
- Rain: 57% | est. 0.04in
- Snow: 0%
- Wind
11.6 mph - Humidity
67% avg. - UV Index
6 - Air QualityTBA
- Sunrise
06:15 AM - Sunset
04:49 PM - Moonrise
08:59 AM - Moonset
06:39 PM - Moon Phase
Waxing Crescent - Hourly
This 10-Day weather forecast is relevant for ZIP codes 92069, 92078, 92079, and 92096, accurately covering areas of San Marcos, CA.
Currently
 |
54°F |
30.07 inHg.
Barometer 81%
Humidity ENE 7.9 mph Wind |
| Clear | ||
National Outlook
Flash Floods in Great Basin and Four Corners; Heavy Rain in Florida - 11-01 to 11-03
Sun Nov 1st 2026, 8:41am PST
Read
Storm Brings Heavy Rain to Eastern U.S. 11-04 to 11-08
Extended Forecast
Sun Nov 1st 2026, 8:41am PST
Read
Sun Nov 1st 2026, 8:41am PST
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