Grass Valley Weather Forecast 15 Days, Weather in Grass Valley Today
Current weather conditions and 15 day weather forecast for Grass Valley, Oregon, 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 Grass Valley
| 09 August 2026 Sunday 15.1 ° C / 59.2°F  Smoky haze |
Feels Like : 11 ° C / 51.8°F Humidity : % 36 Pressure : 1015 mb Wind Speed : 10.8 kmph / 6.7 miles from SW  Visibility : 5 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Grass Valley, OR, USA
Weather Forecast for next 15 Days for Grass 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 Grass Valley, Oregon 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 09 August 2026 Sunday | Smoky haze |
14.3 ° C (57.7°F) |
30.6 ° C (87.1°F) |
22.4 ° C (72.3°F) |
% 27 | 1% | 3.9 | Sunrise:05:57 AM Sunset: 08:20 PM |
Moonrise:01:23 AM Moonset: 06:24 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Smoky haze |
14.6 ° C (58.3°F) |
29.5 ° C (85.1°F) |
21.8 ° C (71.2°F) |
% 35 | 1% | 4.4 | Sunrise:05:58 AM Sunset: 08:18 PM |
Moonrise:02:36 AM Moonset: 07:12 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Smoky haze |
14.5 ° C (58°F) |
30.1 ° C (86.2°F) |
22 ° C (71.6°F) |
% 40 | 1% | 3.5 | Sunrise:05:59 AM Sunset: 08:17 PM |
Moonrise:03:59 AM Moonset: 07:49 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Smoky haze |
15.2 ° C (59.3°F) |
29.5 ° C (85.2°F) |
21.6 ° C (70.8°F) |
% 48 | 1% | 3.9 | Sunrise:06:00 AM Sunset: 08:15 PM |
Moonrise:05:27 AM Moonset: 08:18 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Smoky haze |
13.1 ° C (55.5°F) |
31.7 ° C (89°F) |
22.8 ° C (73°F) |
% 42 | 1% | 8 | Sunrise:06:01 AM Sunset: 08:14 PM |
Moonrise:06:53 AM Moonset: 08:41 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday |  Sunny |
19.8 ° C (67.7°F) |
30 ° C (86.1°F) |
24.5 ° C (76°F) |
% 31 | 2% | 8 | Sunrise:06:03 AM Sunset: 08:12 PM |
Moonrise:08:16 AM Moonset: 09:02 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Sunny |
22.2 ° C (71.9°F) |
30.5 ° C (86.9°F) |
25.4 ° C (77.7°F) |
% 28 | 1% | 8 | Sunrise:06:04 AM Sunset: 08:10 PM |
Moonrise:09:37 AM Moonset: 09:22 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday | Sunny |
18.4 ° C (65.2°F) |
30.8 ° C (87.4°F) |
23.5 ° C (74.3°F) |
% 49 | 17% | 8 | Sunrise:06:05 AM Sunset: 08:09 PM |
Moonrise:10:55 AM Moonset: 09:43 PM Moon Phase ( Waxing Crescent ) |
|
| 17 August 2026 Monday | Sunny |
18.2 ° C (64.7°F) |
28.2 ° C (82.7°F) |
22.4 ° C (72.3°F) |
% 49 | 36% | 7 | Sunrise:06:06 AM Sunset: 08:07 PM |
Moonrise:12:11 PM Moonset: 10:06 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday | Sunny |
15.7 ° C (60.2°F) |
28.3 ° C (82.9°F) |
21.3 ° C (70.4°F) |
% 44 | 4% | 7 | Sunrise:06:07 AM Sunset: 08:06 PM |
Moonrise:01:26 PM Moonset: 10:33 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday | Sunny |
18.3 ° C (65°F) |
30.5 ° C (86.8°F) |
23.7 ° C (74.6°F) |
% 31 | 2% | 8 | Sunrise:06:09 AM Sunset: 08:04 PM |
Moonrise:02:39 PM Moonset: 11:06 PM Moon Phase ( First Quarter ) |
|
| 20 August 2026 Thursday | Sunny |
17.2 ° C (63°F) |
28.3 ° C (83°F) |
22.5 ° C (72.5°F) |
% 45 | 2% | 7 | Sunrise:06:10 AM Sunset: 08:02 PM |
Moonrise:03:45 PM Moonset: 11:47 PM Moon Phase ( First Quarter ) |
|
| 21 August 2026 Friday | Sunny |
14 ° C (57.3°F) |
26.4 ° C (79.5°F) |
19.5 ° C (67.1°F) |
% 53 | 2% | 7 | Sunrise:06:11 AM Sunset: 08:01 PM |
Moonrise:04:44 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 22 August 2026 Saturday | Sunny |
14.3 ° C (57.7°F) |
29.1 ° C (84.3°F) |
20.9 ° C (69.6°F) |
% 43 | 1% | 7 | Sunrise:06:12 AM Sunset: 07:59 PM |
Moonrise:05:33 PM Moonset: 12:37 AM Moon Phase ( Waxing Gibbous ) |
|
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