Current weather conditions and 15 day weather forecast for John Muir Mt. Diablo Medical Center Heliport, 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.
| 19 December 2025 Friday 10.6 ° C / 51.1°F ![]() Mist |
Feels Like : 10.9 ° C / 51.6°F Humidity : % 96 Pressure : 1019 mb Wind Speed : 3.6 kmph / 2.2 miles from S ![]() Visibility : 4.8 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 19 December 2025 Friday | Patchy rain nearby |
8.6 ° C (47.5°F) |
16.6 ° C (61.9°F) |
12.9 ° C (55.2°F) |
% 87 | 86% | 0.4 | Sunrise:07:18 AM Sunset: 04:50 PM |
Moonrise:07:21 AM Moonset: 04:21 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Patchy rain nearby |
12.2 ° C (54°F) |
13.3 ° C (55.9°F) |
12.6 ° C (54.7°F) |
% 94 | 77% | 0.1 | Sunrise:07:18 AM Sunset: 04:50 PM |
Moonrise:08:12 AM Moonset: 05:17 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
12.2 ° C (54°F) |
17.4 ° C (63.3°F) |
14.2 ° C (57.5°F) |
% 89 | 80% | 0.1 | Sunrise:07:19 AM Sunset: 04:51 PM |
Moonrise:08:57 AM Moonset: 06:18 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Moderate rain |
12.1 ° C (53.7°F) |
14 ° C (57.3°F) |
12.9 ° C (55.2°F) |
% 92 | 87% | 0.1 | Sunrise:07:19 AM Sunset: 04:51 PM |
Moonrise:09:35 AM Moonset: 07:23 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Moderate rain |
12 ° C (53.6°F) |
16.6 ° C (61.9°F) |
13.8 ° C (56.9°F) |
% 85 | 89% | 0 | Sunrise:07:20 AM Sunset: 04:52 PM |
Moonrise:10:06 AM Moonset: 08:27 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Patchy rain nearby |
10.8 ° C (51.4°F) |
15.2 ° C (59.4°F) |
13.2 ° C (55.8°F) |
% 73 | 79% | 3 | Sunrise:07:20 AM Sunset: 04:52 PM |
Moonrise:10:34 AM Moonset: 09:32 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Moderate rain |
9.3 ° C (48.7°F) |
13.6 ° C (56.4°F) |
11.6 ° C (52.8°F) |
% 81 | 85% | 3 | Sunrise:07:21 AM Sunset: 04:53 PM |
Moonrise:10:59 AM Moonset: 10:37 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Patchy rain nearby |
7.8 ° C (46°F) |
13.3 ° C (55.9°F) |
10.7 ° C (51.3°F) |
% 80 | 80% | 3 | Sunrise:07:21 AM Sunset: 04:54 PM |
Moonrise:11:23 AM Moonset: 11:43 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Sunny |
5.5 ° C (41.8°F) |
11.9 ° C (53.3°F) |
8.2 ° C (46.8°F) |
% 84 | 0% | 3 | Sunrise:07:21 AM Sunset: 04:54 PM |
Moonrise:11:48 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Sunny |
4.7 ° C (40.4°F) |
11.2 ° C (52.2°F) |
7.5 ° C (45.4°F) |
% 83 | 0% | 3 | Sunrise:07:22 AM Sunset: 04:55 PM |
Moonrise:12:13 PM Moonset: 12:50 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Sunny |
4 ° C (39.2°F) |
12 ° C (53.5°F) |
8.1 ° C (46.6°F) |
% 79 | 0% | 3 | Sunrise:07:22 AM Sunset: 04:56 PM |
Moonrise:12:43 PM Moonset: 02:02 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Patchy rain nearby |
9.3 ° C (48.8°F) |
10.5 ° C (50.9°F) |
10.1 ° C (50.2°F) |
% 81 | 84% | 3 | Sunrise:07:22 AM Sunset: 04:57 PM |
Moonrise:01:20 PM Moonset: 03:17 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Patchy rain nearby |
7.5 ° C (45.5°F) |
13.1 ° C (55.6°F) |
10.4 ° C (50.7°F) |
% 78 | 81% | 3 | Sunrise:07:22 AM Sunset: 04:57 PM |
Moonrise:02:05 PM Moonset: 04:34 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Moderate rain |
7 ° C (44.6°F) |
12.8 ° C (55.1°F) |
9.4 ° C (48.9°F) |
% 80 | 88% | 2 | Sunrise:07:23 AM Sunset: 04:58 PM |
Moonrise:03:03 PM Moonset: 05:51 AM Moon Phase ( Waxing Gibbous ) |
|