Alta Sierra Weather Forecast 15 Days, Weather in Alta Sierra Today
Current weather conditions and 15 day weather forecast for Alta Sierra, 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 Alta Sierra
| 23 December 2025 Tuesday 12.2 ° C / 54°F  Overcast |
Feels Like : 12.7 ° C / 54.8°F Humidity : % 94 Pressure : 1013 mb Wind Speed : 3.6 kmph / 2.2 miles from E  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Alta Sierra, CA, USA
Weather Forecast for next 15 Days for Alta Sierra 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 Alta Sierra, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 22 December 2025 Monday |  Heavy rain |
10.6 ° C (51.1°F) |
12.2 ° C (54°F) |
11.3 ° C (52.3°F) |
% 99 | 89% | 0 | Sunrise:07:21 AM Sunset: 04:45 PM |
Moonrise:09:36 AM Moonset: 07:17 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Overcast |
9.9 ° C (49.8°F) |
13.7 ° C (56.7°F) |
11.9 ° C (53.4°F) |
% 74 | 0% | 0.3 | Sunrise:07:21 AM Sunset: 04:46 PM |
Moonrise:10:07 AM Moonset: 08:22 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Heavy rain |
8.8 ° C (47.8°F) |
10.7 ° C (51.2°F) |
10.4 ° C (50.7°F) |
% 85 | 87% | 0.1 | Sunrise:07:22 AM Sunset: 04:47 PM |
Moonrise:10:34 AM Moonset: 09:28 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Heavy rain |
6.2 ° C (43.1°F) |
9.1 ° C (48.4°F) |
8.1 ° C (46.5°F) |
% 87 | 88% | 0.1 | Sunrise:07:22 AM Sunset: 04:47 PM |
Moonrise:10:58 AM Moonset: 10:34 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Heavy rain |
4.7 ° C (40.5°F) |
7.3 ° C (45.1°F) |
6.2 ° C (43.2°F) |
% 93 | 80% | 0.1 | Sunrise:07:23 AM Sunset: 04:48 PM |
Moonrise:11:21 AM Moonset: 11:41 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Patchy rain nearby |
3 ° C (37.4°F) |
10.8 ° C (51.4°F) |
6.2 ° C (43.2°F) |
% 89 | 85% | 0 | Sunrise:07:23 AM Sunset: 04:49 PM |
Moonrise:11:45 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Sunny |
2.2 ° C (36°F) |
12 ° C (53.7°F) |
5.6 ° C (42.1°F) |
% 74 | 0% | 3 | Sunrise:07:23 AM Sunset: 04:49 PM |
Moonrise:12:09 PM Moonset: 12:49 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Sunny |
2.4 ° C (36.3°F) |
11.5 ° C (52.6°F) |
5.8 ° C (42.5°F) |
% 75 | 0% | 3 | Sunrise:07:23 AM Sunset: 04:50 PM |
Moonrise:12:38 PM Moonset: 02:02 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Sunny |
3.7 ° C (38.7°F) |
13.4 ° C (56°F) |
7.1 ° C (44.8°F) |
% 75 | 0% | 3 | Sunrise:07:24 AM Sunset: 04:51 PM |
Moonrise:01:14 PM Moonset: 03:18 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Sunny |
6 ° C (42.8°F) |
15.2 ° C (59.3°F) |
9 ° C (48.1°F) |
% 78 | 0% | 3 | Sunrise:07:24 AM Sunset: 04:52 PM |
Moonrise:01:59 PM Moonset: 04:36 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Sunny |
7.1 ° C (44.7°F) |
15.3 ° C (59.6°F) |
9.5 ° C (49.2°F) |
% 77 | 0% | 3 | Sunrise:07:24 AM Sunset: 04:52 PM |
Moonrise:02:55 PM Moonset: 05:54 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Sunny |
6.4 ° C (43.5°F) |
13.7 ° C (56.7°F) |
8.9 ° C (48°F) |
% 83 | 0% | 3 | Sunrise:07:24 AM Sunset: 04:53 PM |
Moonrise:04:03 PM Moonset: 07:03 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 January 2026 Saturday | Sunny |
6 ° C (42.7°F) |
14.4 ° C (58°F) |
9 ° C (48.2°F) |
% 78 | 0% | 3 | Sunrise:07:24 AM Sunset: 04:54 PM |
Moonrise:05:20 PM Moonset: 08:01 AM Moon Phase ( Full Moon ) |
|
| 04 January 2026 Sunday | Sunny |
6.3 ° C (43.3°F) |
14 ° C (57.1°F) |
9.4 ° C (48.8°F) |
% 78 | 0% | 3 | Sunrise:07:24 AM Sunset: 04:55 PM |
Moonrise:06:37 PM Moonset: 08:46 AM Moon Phase ( Waning Gibbous ) |
|
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