Sunnyvale Weather Forecast 15 Days, Weather in Sunnyvale Today
Current weather conditions and 15 day weather forecast for Sunnyvale, 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 Sunnyvale
| 20 December 2025 Saturday 16.3 ° C / 61.3°F  Overcast |
Feels Like : 16.3 ° C / 61.3°F Humidity : % 82 Pressure : 1018 mb Wind Speed : 3.6 kmph / 2.2 miles from SSE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Sunnyvale, CA, USA
Weather Forecast for next 15 Days for Sunnyvale 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 Sunnyvale, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 20 December 2025 Saturday |  Moderate rain |
13.9 ° C (57°F) |
17 ° C (62.6°F) |
14.9 ° C (58.8°F) |
% 91 | 90% | 0.4 | Sunrise:07:19 AM Sunset: 04:54 PM |
Moonrise:08:12 AM Moonset: 05:21 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Overcast |
13 ° C (55.4°F) |
15.9 ° C (60.6°F) |
13.9 ° C (57°F) |
% 90 | 0% | 0 | Sunrise:07:19 AM Sunset: 04:54 PM |
Moonrise:08:57 AM Moonset: 06:22 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Heavy rain |
13.1 ° C (55.6°F) |
14.3 ° C (57.7°F) |
13.6 ° C (56.5°F) |
% 93 | 88% | 0.1 | Sunrise:07:20 AM Sunset: 04:55 PM |
Moonrise:09:35 AM Moonset: 07:26 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Patchy rain nearby |
12.4 ° C (54.3°F) |
15.9 ° C (60.6°F) |
13.8 ° C (56.8°F) |
% 85 | 82% | 0.3 | Sunrise:07:20 AM Sunset: 04:55 PM |
Moonrise:10:07 AM Moonset: 08:30 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Heavy rain |
11.6 ° C (52.9°F) |
14.2 ° C (57.6°F) |
13.6 ° C (56.4°F) |
% 80 | 89% | 0 | Sunrise:07:21 AM Sunset: 04:56 PM |
Moonrise:10:35 AM Moonset: 09:35 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Patchy rain nearby |
8.5 ° C (47.4°F) |
12.2 ° C (53.9°F) |
11.3 ° C (52.3°F) |
% 86 | 85% | 3 | Sunrise:07:21 AM Sunset: 04:56 PM |
Moonrise:11:00 AM Moonset: 10:39 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Patchy rain nearby |
7.9 ° C (46.2°F) |
13.1 ° C (55.6°F) |
10.7 ° C (51.2°F) |
% 85 | 88% | 3 | Sunrise:07:21 AM Sunset: 04:57 PM |
Moonrise:11:25 AM Moonset: 11:44 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Sunny |
6.6 ° C (43.9°F) |
13.6 ° C (56.5°F) |
9.4 ° C (48.8°F) |
% 83 | 0% | 3 | Sunrise:07:22 AM Sunset: 04:58 PM |
Moonrise:11:50 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Partly Cloudy |
7.4 ° C (45.3°F) |
12.9 ° C (55.3°F) |
9.9 ° C (49.8°F) |
% 72 | 0% | 3 | Sunrise:07:22 AM Sunset: 04:58 PM |
Moonrise:12:16 PM Moonset: 12:52 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
10 ° C (50°F) |
11.7 ° C (53.1°F) |
10.7 ° C (51.3°F) |
% 73 | 81% | 3 | Sunrise:07:22 AM Sunset: 04:59 PM |
Moonrise:12:46 PM Moonset: 02:03 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Patchy rain nearby |
8.6 ° C (47.6°F) |
11 ° C (51.8°F) |
9.8 ° C (49.7°F) |
% 87 | 89% | 2 | Sunrise:07:22 AM Sunset: 05:00 PM |
Moonrise:01:23 PM Moonset: 03:17 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Patchy rain nearby |
8.9 ° C (48°F) |
12.8 ° C (55.1°F) |
10.3 ° C (50.5°F) |
% 89 | 0% | 3 | Sunrise:07:23 AM Sunset: 05:01 PM |
Moonrise:02:09 PM Moonset: 04:34 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Patchy rain nearby |
8.3 ° C (47°F) |
13.7 ° C (56.7°F) |
10.6 ° C (51.2°F) |
% 85 | 85% | 3 | Sunrise:07:23 AM Sunset: 05:01 PM |
Moonrise:03:06 PM Moonset: 05:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Patchy rain nearby |
5.2 ° C (41.4°F) |
11.6 ° C (52.8°F) |
7.7 ° C (45.9°F) |
% 84 | 86% | 2 | Sunrise:07:23 AM Sunset: 05:02 PM |
Moonrise:04:14 PM Moonset: 07:00 AM Moon Phase ( Waxing Gibbous ) |
|
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