Lake San Marcos Weather Forecast 15 Days, Weather in Lake San Marcos Today
Current weather conditions and 15 day weather forecast for Lake San Marcos, California, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Lake San Marcos
| 05 December 2025 Friday 12.8 ° C / 55°F  Clear |
Feels Like : 13.1 ° C / 55.6°F Humidity : % 35 Pressure : 1021 mb Wind Speed : 4.3 kmph / 2.7 miles from NNE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Lake San Marcos, CA, USA
Weather Forecast for next 15 Days for Lake San Marcos including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Lake San Marcos, California state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 04 December 2025 Thursday | Sunny |
10.8 ° C (51.4°F) |
23.9 ° C (75°F) |
16 ° C (60.8°F) |
% 29 | 0% | 0.6 | Sunrise:06:37 AM Sunset: 04:41 PM |
Moonrise:04:21 PM Moonset: 06:28 AM Moon Phase ( Full Moon ) |
|
| 05 December 2025 Friday | Sunny |
7.1 ° C (44.8°F) |
19.4 ° C (66.9°F) |
13.4 ° C (56°F) |
% 41 | 0% | 0.6 | Sunrise:06:37 AM Sunset: 04:41 PM |
Moonrise:05:25 PM Moonset: 07:42 AM Moon Phase ( Full Moon ) |
|
| 06 December 2025 Saturday | Sunny |
11.5 ° C (52.7°F) |
17.7 ° C (63.9°F) |
13.9 ° C (57.1°F) |
% 52 | 0% | 0.7 | Sunrise:06:38 AM Sunset: 04:41 PM |
Moonrise:06:36 PM Moonset: 08:46 AM Moon Phase ( Waning Gibbous ) |
|
| 07 December 2025 Sunday | Sunny |
10.6 ° C (51.1°F) |
19.8 ° C (67.6°F) |
14.3 ° C (57.7°F) |
% 61 | 0% | 0.7 | Sunrise:06:39 AM Sunset: 04:41 PM |
Moonrise:07:50 PM Moonset: 09:40 AM Moon Phase ( Waning Gibbous ) |
|
| 08 December 2025 Monday | Sunny |
12.4 ° C (54.4°F) |
23.3 ° C (74°F) |
16.7 ° C (62.1°F) |
% 44 | 0% | 0.6 | Sunrise:06:40 AM Sunset: 04:41 PM |
Moonrise:09:00 PM Moonset: 10:23 AM Moon Phase ( Waning Gibbous ) |
|
| 09 December 2025 Tuesday | Sunny |
15.5 ° C (59.9°F) |
24.5 ° C (76°F) |
17.6 ° C (63.6°F) |
% 32 | 0% | 0 | Sunrise:06:40 AM Sunset: 04:42 PM |
Moonrise:10:06 PM Moonset: 10:59 AM Moon Phase ( Waning Gibbous ) |
|
| 10 December 2025 Wednesday | Sunny |
14.6 ° C (58.3°F) |
23.3 ° C (74°F) |
17.6 ° C (63.7°F) |
% 35 | 0% | 5 | Sunrise:06:41 AM Sunset: 04:42 PM |
Moonrise:11:07 PM Moonset: 11:29 AM Moon Phase ( Waning Gibbous ) |
|
| 11 December 2025 Thursday | Sunny |
13.8 ° C (56.8°F) |
23.1 ° C (73.6°F) |
17.1 ° C (62.7°F) |
% 39 | 0% | 5 | Sunrise:06:42 AM Sunset: 04:42 PM |
Moonrise:No moonrise Moonset: 11:55 AM Moon Phase ( Last Quarter ) |
|
| 12 December 2025 Friday | Sunny |
14 ° C (57.2°F) |
22.5 ° C (72.6°F) |
17.1 ° C (62.7°F) |
% 41 | 0% | 5 | Sunrise:06:43 AM Sunset: 04:42 PM |
Moonrise:12:06 AM Moonset: 12:20 PM Moon Phase ( Waning Crescent ) |
|
| 13 December 2025 Saturday |  Overcast |
13.2 ° C (55.8°F) |
20.4 ° C (68.7°F) |
15.7 ° C (60.3°F) |
% 50 | 0% | 4 | Sunrise:06:43 AM Sunset: 04:43 PM |
Moonrise:01:03 AM Moonset: 12:45 PM Moon Phase ( Waning Crescent ) |
|
| 14 December 2025 Sunday | Sunny |
11.8 ° C (53.3°F) |
20.1 ° C (68.1°F) |
15.1 ° C (59.2°F) |
% 55 | 0% | 5 | Sunrise:06:44 AM Sunset: 04:43 PM |
Moonrise:01:59 AM Moonset: 01:11 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday | Sunny |
12.7 ° C (54.9°F) |
20.4 ° C (68.8°F) |
15.5 ° C (59.9°F) |
% 52 | 0% | 5 | Sunrise:06:45 AM Sunset: 04:43 PM |
Moonrise:02:55 AM Moonset: 01:39 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Sunny |
11.3 ° C (52.4°F) |
18.5 ° C (65.2°F) |
14 ° C (57.2°F) |
% 63 | 0% | 4 | Sunrise:06:45 AM Sunset: 04:44 PM |
Moonrise:03:53 AM Moonset: 02:10 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Sunny |
10.6 ° C (51.2°F) |
17.7 ° C (63.9°F) |
13.6 ° C (56.5°F) |
% 78 | 0% | 4 | Sunrise:06:46 AM Sunset: 04:44 PM |
Moonrise:04:51 AM Moonset: 02:47 PM Moon Phase ( Waning Crescent ) |
|
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