San Geronimo Weather Forecast 15 Days, Weather in San Geronimo Today
Current weather conditions and 15 day weather forecast for San Geronimo, 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 San Geronimo
| 15 December 2025 Monday 5.3 ° C / 41.5°F  Mist |
Feels Like : 3.5 ° C / 38.3°F Humidity : % 100 Pressure : 1025 mb Wind Speed : 7.9 kmph / 4.9 miles from NNE  Visibility : 6.4 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for San Geronimo, CA, USA
Weather Forecast for next 15 Days for San Geronimo 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 San Geronimo, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 December 2025 Monday |  Fog |
5.2 ° C (41.4°F) |
14.9 ° C (58.8°F) |
9.1 ° C (48.3°F) |
% 92 | 0% | 0.4 | Sunrise:07:19 AM Sunset: 04:52 PM |
Moonrise:03:27 AM Moonset: 01:50 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Fog |
12.1 ° C (53.8°F) |
15.2 ° C (59.4°F) |
13.7 ° C (56.7°F) |
% 98 | 0% | 0.2 | Sunrise:07:20 AM Sunset: 04:52 PM |
Moonrise:04:27 AM Moonset: 02:19 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Fog |
9.8 ° C (49.7°F) |
15 ° C (59°F) |
13.2 ° C (55.7°F) |
% 92 | 0% | 0.4 | Sunrise:07:21 AM Sunset: 04:53 PM |
Moonrise:05:29 AM Moonset: 02:54 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Sunny |
8.9 ° C (48°F) |
14.5 ° C (58.1°F) |
11.6 ° C (52.8°F) |
% 68 | 0% | 0.4 | Sunrise:07:21 AM Sunset: 04:53 PM |
Moonrise:06:28 AM Moonset: 03:36 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Patchy rain nearby |
11.4 ° C (52.5°F) |
14.5 ° C (58.2°F) |
12.8 ° C (55°F) |
% 90 | 88% | 0 | Sunrise:07:22 AM Sunset: 04:53 PM |
Moonrise:07:26 AM Moonset: 04:24 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Patchy rain nearby |
12.8 ° C (55°F) |
15 ° C (58.9°F) |
13.8 ° C (56.8°F) |
% 90 | 78% | 3 | Sunrise:07:22 AM Sunset: 04:54 PM |
Moonrise:08:16 AM Moonset: 05:21 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Heavy rain |
13.2 ° C (55.7°F) |
14.3 ° C (57.8°F) |
13.8 ° C (56.9°F) |
% 97 | 85% | 3 | Sunrise:07:23 AM Sunset: 04:54 PM |
Moonrise:09:01 AM Moonset: 06:22 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Moderate rain |
13.8 ° C (56.9°F) |
14.1 ° C (57.4°F) |
14.1 ° C (57.4°F) |
% 96 | 88% | 3 | Sunrise:07:23 AM Sunset: 04:55 PM |
Moonrise:09:39 AM Moonset: 07:26 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Patchy rain nearby |
13.8 ° C (56.9°F) |
14.8 ° C (58.7°F) |
14.2 ° C (57.6°F) |
% 85 | 85% | 3 | Sunrise:07:24 AM Sunset: 04:55 PM |
Moonrise:10:10 AM Moonset: 08:31 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Moderate rain |
11.7 ° C (53.1°F) |
14.9 ° C (58.9°F) |
13.6 ° C (56.4°F) |
% 88 | 85% | 3 | Sunrise:07:24 AM Sunset: 04:56 PM |
Moonrise:10:38 AM Moonset: 09:36 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Patchy rain nearby |
12.5 ° C (54.5°F) |
15 ° C (59.1°F) |
13.7 ° C (56.6°F) |
% 91 | 84% | 3 | Sunrise:07:25 AM Sunset: 04:57 PM |
Moonrise:11:03 AM Moonset: 10:40 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Patchy rain nearby |
10.9 ° C (51.7°F) |
14.6 ° C (58.3°F) |
12.8 ° C (55°F) |
% 89 | 76% | 3 | Sunrise:07:25 AM Sunset: 04:57 PM |
Moonrise:11:27 AM Moonset: 11:47 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Patchy rain nearby |
12 ° C (53.7°F) |
14.6 ° C (58.3°F) |
13.6 ° C (56.4°F) |
% 91 | 89% | 3 | Sunrise:07:25 AM Sunset: 04:58 PM |
Moonrise:11:51 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Patchy rain nearby |
11.2 ° C (52.1°F) |
14.2 ° C (57.6°F) |
12.7 ° C (54.8°F) |
% 87 | 65% | 3 | Sunrise:07:26 AM Sunset: 04:59 PM |
Moonrise:12:17 PM Moonset: 12:54 AM Moon Phase ( Waxing Gibbous ) |
|
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