Upper Lake Weather Forecast 15 Days, Weather in Upper Lake Today
Current weather conditions and 15 day weather forecast for Upper Lake, 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 Upper Lake
| 15 December 2025 Monday 12.8 ° C / 55°F  Sunny |
Feels Like : 13.4 ° C / 56°F Humidity : % 66 Pressure : 1020 mb Wind Speed : 3.6 kmph / 2.2 miles from SSW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Upper Lake, CA, USA
Weather Forecast for next 15 Days for Upper Lake 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 Upper Lake, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 December 2025 Sunday | Sunny |
9.8 ° C (49.6°F) |
16.2 ° C (61.2°F) |
12.5 ° C (54.5°F) |
% 68 | 0% | 0.4 | Sunrise:07:23 AM Sunset: 04:50 PM |
Moonrise:02:30 AM Moonset: 01:25 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Cloudy |
10.3 ° C (50.5°F) |
15 ° C (59°F) |
13 ° C (55.4°F) |
% 75 | 0% | 0.3 | Sunrise:07:24 AM Sunset: 04:50 PM |
Moonrise:03:31 AM Moonset: 01:49 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday |  Overcast |
12.3 ° C (54.2°F) |
15.9 ° C (60.6°F) |
14.2 ° C (57.6°F) |
% 96 | 0% | 0.3 | Sunrise:07:24 AM Sunset: 04:50 PM |
Moonrise:04:32 AM Moonset: 02:17 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Heavy rain |
4.7 ° C (40.4°F) |
13.2 ° C (55.8°F) |
11.4 ° C (52.5°F) |
% 97 | 85% | 0.3 | Sunrise:07:25 AM Sunset: 04:50 PM |
Moonrise:05:34 AM Moonset: 02:51 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Patchy rain nearby |
6.1 ° C (43°F) |
10 ° C (50°F) |
8.4 ° C (47.2°F) |
% 85 | 89% | 0.1 | Sunrise:07:26 AM Sunset: 04:51 PM |
Moonrise:06:34 AM Moonset: 03:33 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Patchy rain nearby |
6.8 ° C (44.3°F) |
8.1 ° C (46.6°F) |
8.3 ° C (47°F) |
% 96 | 75% | 0 | Sunrise:07:26 AM Sunset: 04:51 PM |
Moonrise:07:31 AM Moonset: 04:21 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Partly Cloudy |
4.7 ° C (40.4°F) |
11.7 ° C (53°F) |
8.3 ° C (47°F) |
% 85 | 0% | 3 | Sunrise:07:27 AM Sunset: 04:52 PM |
Moonrise:08:22 AM Moonset: 05:18 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Moderate rain |
5.1 ° C (41.2°F) |
6.8 ° C (44.3°F) |
7.4 ° C (45.4°F) |
% 91 | 79% | 2 | Sunrise:07:27 AM Sunset: 04:52 PM |
Moonrise:09:06 AM Moonset: 06:19 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Moderate rain |
4.8 ° C (40.7°F) |
10.6 ° C (51.1°F) |
9 ° C (48.2°F) |
% 96 | 88% | 2 | Sunrise:07:28 AM Sunset: 04:53 PM |
Moonrise:09:43 AM Moonset: 07:24 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Patchy rain nearby |
3.1 ° C (37.6°F) |
5.7 ° C (42.2°F) |
4.6 ° C (40.3°F) |
% 90 | 88% | 1 | Sunrise:07:28 AM Sunset: 04:53 PM |
Moonrise:10:14 AM Moonset: 08:30 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Patchy rain nearby |
6.5 ° C (43.6°F) |
9.7 ° C (49.4°F) |
8.1 ° C (46.6°F) |
% 94 | 84% | 2 | Sunrise:07:29 AM Sunset: 04:54 PM |
Moonrise:10:41 AM Moonset: 09:36 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Moderate rain |
8.2 ° C (46.8°F) |
9 ° C (48.2°F) |
9.7 ° C (49.5°F) |
% 96 | 84% | 2 | Sunrise:07:29 AM Sunset: 04:55 PM |
Moonrise:11:05 AM Moonset: 10:41 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Patchy rain nearby |
8.7 ° C (47.6°F) |
10 ° C (50.1°F) |
10.5 ° C (50.9°F) |
% 97 | 88% | 3 | Sunrise:07:29 AM Sunset: 04:55 PM |
Moonrise:11:29 AM Moonset: 11:48 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Moderate rain |
8.6 ° C (47.5°F) |
9.3 ° C (48.8°F) |
10.1 ° C (50.1°F) |
% 97 | 88% | 3 | Sunrise:07:30 AM Sunset: 04:56 PM |
Moonrise:11:52 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
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