Portola Valley Weather Forecast 15 Days, Weather in Portola Valley Today
Current weather conditions and 15 day weather forecast for Portola Valley, 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 Portola Valley
| 31 July 2025 Thursday 19.1 ° C / 66.4°F  Overcast |
Feels Like : 19.1 ° C / 66.4°F Humidity : % 68 Pressure : 1016 mb Wind Speed : 11.5 kmph / 7.2 miles from WNW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Portola Valley, CA, USA
Weather Forecast for next 15 Days for Portola Valley 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 Portola Valley, California state, US. To see the daily forecast, scroll to the table below.
| Date | |
|---|---|
| 30 July 2025 Wednesday | |
| Weather forecast | Overcast |
| Low temperature | 13.7 ° C (56.7°F) |
| High temperature | 22 ° C (71.6°F) |
| Avg. temperature | 16.6 ° C (61.9°F) |
| Humidity | % 81 |
| Chance of rain | 0% |
| UV Index | 2.5 |
| Sun Position | Sunrise:06:11 AM Sunset: 08:18 PM |
| Moon Position | Moonrise:12:10 PM Moonset: 11:19 PM Moon Phase ( Waxing Crescent ) |
| 31 July 2025 Thursday | |
| Weather forecast | Overcast |
| Low temperature | 14.3 ° C (57.7°F) |
| High temperature | 25.7 ° C (78.3°F) |
| Avg. temperature | 18.1 ° C (64.6°F) |
| Humidity | % 76 |
| Chance of rain | 0% |
| UV Index | 2.6 |
| Sun Position | Sunrise:06:12 AM Sunset: 08:17 PM |
| Moon Position | Moonrise:01:10 PM Moonset: 11:44 PM Moon Phase ( Waxing Crescent ) |
| 01 August 2025 Friday | |
| Weather forecast |  Mist |
| Low temperature | 13.8 ° C (56.8°F) |
| High temperature | 21.1 ° C (70°F) |
| Avg. temperature | 16.5 ° C (61.7°F) |
| Humidity | % 82 |
| Chance of rain | 0% |
| UV Index | 2.6 |
| Sun Position | Sunrise:06:13 AM Sunset: 08:16 PM |
| Moon Position | Moonrise:02:10 PM Moonset: No moonset Moon Phase ( First Quarter ) |
| 02 August 2025 Saturday | |
| Weather forecast |  Cloudy |
| Low temperature | 13.1 ° C (55.6°F) |
| High temperature | 27 ° C (80.6°F) |
| Avg. temperature | 18.1 ° C (64.5°F) |
| Humidity | % 74 |
| Chance of rain | 0% |
| UV Index | 2.7 |
| Sun Position | Sunrise:06:14 AM Sunset: 08:15 PM |
| Moon Position | Moonrise:03:12 PM Moonset: 12:12 AM Moon Phase ( Waxing Gibbous ) |
| 03 August 2025 Sunday | |
| Weather forecast |  Sunny |
| Low temperature | 14.5 ° C (58.1°F) |
| High temperature | 25.7 ° C (78.2°F) |
| Avg. temperature | 19.4 ° C (66.9°F) |
| Humidity | % 62 |
| Chance of rain | 0% |
| UV Index | 0 |
| Sun Position | Sunrise:06:15 AM Sunset: 08:14 PM |
| Moon Position | Moonrise:04:13 PM Moonset: 12:45 AM Moon Phase ( Waxing Gibbous ) |
| 04 August 2025 Monday | |
| Weather forecast | Sunny |
| Low temperature | 15 ° C (59°F) |
| High temperature | 25.5 ° C (78°F) |
| Avg. temperature | 19.2 ° C (66.6°F) |
| Humidity | % 65 |
| Chance of rain | 0% |
| UV Index | 5 |
| Sun Position | Sunrise:06:15 AM Sunset: 08:13 PM |
| Moon Position | Moonrise:05:12 PM Moonset: 01:26 AM Moon Phase ( Waxing Gibbous ) |
| 05 August 2025 Tuesday | |
| Weather forecast | Sunny |
| Low temperature | 14.7 ° C (58.5°F) |
| High temperature | 31.4 ° C (88.4°F) |
| Avg. temperature | 22.5 ° C (72.5°F) |
| Humidity | % 50 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:16 AM Sunset: 08:12 PM |
| Moon Position | Moonrise:06:07 PM Moonset: 02:14 AM Moon Phase ( Waxing Gibbous ) |
| 06 August 2025 Wednesday | |
| Weather forecast | Sunny |
| Low temperature | 18.7 ° C (65.6°F) |
| High temperature | 32.6 ° C (90.7°F) |
| Avg. temperature | 24.7 ° C (76.4°F) |
| Humidity | % 41 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:17 AM Sunset: 08:11 PM |
| Moon Position | Moonrise:06:55 PM Moonset: 03:11 AM Moon Phase ( Waxing Gibbous ) |
| 07 August 2025 Thursday | |
| Weather forecast | Sunny |
| Low temperature | 19.7 ° C (67.5°F) |
| High temperature | 31.4 ° C (88.5°F) |
| Avg. temperature | 24.4 ° C (75.9°F) |
| Humidity | % 40 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:18 AM Sunset: 08:10 PM |
| Moon Position | Moonrise:07:36 PM Moonset: 04:15 AM Moon Phase ( Waxing Gibbous ) |
| 08 August 2025 Friday | |
| Weather forecast | Sunny |
| Low temperature | 17.9 ° C (64.3°F) |
| High temperature | 31.2 ° C (88.2°F) |
| Avg. temperature | 23 ° C (73.4°F) |
| Humidity | % 46 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:19 AM Sunset: 08:08 PM |
| Moon Position | Moonrise:08:11 PM Moonset: 05:24 AM Moon Phase ( Waxing Gibbous ) |
| 09 August 2025 Saturday | |
| Weather forecast | Sunny |
| Low temperature | 16.3 ° C (61.4°F) |
| High temperature | 28.7 ° C (83.7°F) |
| Avg. temperature | 21.2 ° C (70.1°F) |
| Humidity | % 58 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:20 AM Sunset: 08:07 PM |
| Moon Position | Moonrise:08:41 PM Moonset: 06:33 AM Moon Phase ( Full Moon ) |
| 10 August 2025 Sunday | |
| Weather forecast | Sunny |
| Low temperature | 16.1 ° C (60.9°F) |
| High temperature | 30 ° C (86°F) |
| Avg. temperature | 21.9 ° C (71.4°F) |
| Humidity | % 62 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:20 AM Sunset: 08:06 PM |
| Moon Position | Moonrise:09:08 PM Moonset: 07:44 AM Moon Phase ( Waning Gibbous ) |
| 11 August 2025 Monday | |
| Weather forecast | Sunny |
| Low temperature | 16.8 ° C (62.2°F) |
| High temperature | 30.4 ° C (86.7°F) |
| Avg. temperature | 22.3 ° C (72.1°F) |
| Humidity | % 59 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:21 AM Sunset: 08:05 PM |
| Moon Position | Moonrise:09:34 PM Moonset: 08:53 AM Moon Phase ( Waning Gibbous ) |
| 12 August 2025 Tuesday | |
| Weather forecast | Sunny |
| Low temperature | 17 ° C (62.5°F) |
| High temperature | 29.4 ° C (84.9°F) |
| Avg. temperature | 22 ° C (71.6°F) |
| Humidity | % 61 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:22 AM Sunset: 08:04 PM |
| Moon Position | Moonrise:09:59 PM Moonset: 10:03 AM Moon Phase ( Waning Gibbous ) |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 30 July 2025 Wednesday | Overcast |
13.7 ° C (56.7°F) |
22 ° C (71.6°F) |
16.6 ° C (61.9°F) |
% 81 | 0% | 2.5 | Sunrise:06:11 AM Sunset: 08:18 PM |
Moonrise:12:10 PM Moonset: 11:19 PM Moon Phase ( Waxing Crescent ) |
|
| 31 July 2025 Thursday | Overcast |
14.3 ° C (57.7°F) |
25.7 ° C (78.3°F) |
18.1 ° C (64.6°F) |
% 76 | 0% | 2.6 | Sunrise:06:12 AM Sunset: 08:17 PM |
Moonrise:01:10 PM Moonset: 11:44 PM Moon Phase ( Waxing Crescent ) |
|
| 01 August 2025 Friday | Mist |
13.8 ° C (56.8°F) |
21.1 ° C (70°F) |
16.5 ° C (61.7°F) |
% 82 | 0% | 2.6 | Sunrise:06:13 AM Sunset: 08:16 PM |
Moonrise:02:10 PM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 02 August 2025 Saturday | Cloudy |
13.1 ° C (55.6°F) |
27 ° C (80.6°F) |
18.1 ° C (64.5°F) |
% 74 | 0% | 2.7 | Sunrise:06:14 AM Sunset: 08:15 PM |
Moonrise:03:12 PM Moonset: 12:12 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 August 2025 Sunday | Sunny |
14.5 ° C (58.1°F) |
25.7 ° C (78.2°F) |
19.4 ° C (66.9°F) |
% 62 | 0% | 0 | Sunrise:06:15 AM Sunset: 08:14 PM |
Moonrise:04:13 PM Moonset: 12:45 AM Moon Phase ( Waxing Gibbous ) |
|
| 04 August 2025 Monday | Sunny |
15 ° C (59°F) |
25.5 ° C (78°F) |
19.2 ° C (66.6°F) |
% 65 | 0% | 5 | Sunrise:06:15 AM Sunset: 08:13 PM |
Moonrise:05:12 PM Moonset: 01:26 AM Moon Phase ( Waxing Gibbous ) |
|
| 05 August 2025 Tuesday | Sunny |
14.7 ° C (58.5°F) |
31.4 ° C (88.4°F) |
22.5 ° C (72.5°F) |
% 50 | 0% | 6 | Sunrise:06:16 AM Sunset: 08:12 PM |
Moonrise:06:07 PM Moonset: 02:14 AM Moon Phase ( Waxing Gibbous ) |
|
| 06 August 2025 Wednesday | Sunny |
18.7 ° C (65.6°F) |
32.6 ° C (90.7°F) |
24.7 ° C (76.4°F) |
% 41 | 0% | 6 | Sunrise:06:17 AM Sunset: 08:11 PM |
Moonrise:06:55 PM Moonset: 03:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 07 August 2025 Thursday | Sunny |
19.7 ° C (67.5°F) |
31.4 ° C (88.5°F) |
24.4 ° C (75.9°F) |
% 40 | 0% | 6 | Sunrise:06:18 AM Sunset: 08:10 PM |
Moonrise:07:36 PM Moonset: 04:15 AM Moon Phase ( Waxing Gibbous ) |
|
| 08 August 2025 Friday | Sunny |
17.9 ° C (64.3°F) |
31.2 ° C (88.2°F) |
23 ° C (73.4°F) |
% 46 | 0% | 6 | Sunrise:06:19 AM Sunset: 08:08 PM |
Moonrise:08:11 PM Moonset: 05:24 AM Moon Phase ( Waxing Gibbous ) |
|
| 09 August 2025 Saturday | Sunny |
16.3 ° C (61.4°F) |
28.7 ° C (83.7°F) |
21.2 ° C (70.1°F) |
% 58 | 0% | 6 | Sunrise:06:20 AM Sunset: 08:07 PM |
Moonrise:08:41 PM Moonset: 06:33 AM Moon Phase ( Full Moon ) |
|
| 10 August 2025 Sunday | Sunny |
16.1 ° C (60.9°F) |
30 ° C (86°F) |
21.9 ° C (71.4°F) |
% 62 | 0% | 6 | Sunrise:06:20 AM Sunset: 08:06 PM |
Moonrise:09:08 PM Moonset: 07:44 AM Moon Phase ( Waning Gibbous ) |
|
| 11 August 2025 Monday | Sunny |
16.8 ° C (62.2°F) |
30.4 ° C (86.7°F) |
22.3 ° C (72.1°F) |
% 59 | 0% | 6 | Sunrise:06:21 AM Sunset: 08:05 PM |
Moonrise:09:34 PM Moonset: 08:53 AM Moon Phase ( Waning Gibbous ) |
|
| 12 August 2025 Tuesday | Sunny |
17 ° C (62.5°F) |
29.4 ° C (84.9°F) |
22 ° C (71.6°F) |
% 61 | 0% | 6 | Sunrise:06:22 AM Sunset: 08:04 PM |
Moonrise:09:59 PM Moonset: 10:03 AM Moon Phase ( Waning Gibbous ) |
|
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