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About Mount Diablo State ParkMount Diablo State Park, CA 14 Day Weather
Summit Rd, Walnut Creek, CA 94598 (925) 837-2525Quick Weather Clicks
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Mount Diablo State Park, CA Weather Forecast
Mount Diablo State Park, CA Weather Forecast Dated: 932 PM Thu Aug 27 2026 (Mount Diablo State Park Time)
Thu, 27th Lo: 19°C66°F Hi: 37°C99°F |
Overcast Thursday, temperatures as high as 99°F37°C, low temperature around 66°F19°C, chance of rain 9%, wind out of the WSW 5 mph8 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 32%. |
| Fri, 28th Lo: 15°C60°F Hi: 29°C84°F |
Overcast Friday, temperatures as high as 84°F29°C, low temperature around 60°F15°C, chance of rain 10%, wind out of the WNW 2 mph3 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi10 km, humidity 44%. |
Sat, 29th Lo: 13°C55°F Hi: 23°C74°F |
Sunny Saturday, temperatures as high as 74°F23°C, low temperature around 55°F13°C, chance of rain 1%, wind out of the WSW 8 mph12 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 38%. |
| Sun, 30th Lo: 12°C54°F Hi: 27°C80°F |
Sunny Sunday, temperatures as high as 80°F27°C, low temperature around 54°F12°C, chance of rain 1%, wind out of the SW 5 mph8 km/h. Barometric pressure 29.91 in1013 mb, visibility 6 mi10 km, humidity 33%. |
| Mon, 31st Lo: 12°C53°F Hi: 22°C72°F |
Sunny Monday, temperatures as high as 72°F22°C, low temperature around 53°F12°C, chance of rain 2%, wind out of the WSW 8 mph12 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 48%. |
| Tue, 1st Lo: 14°C56°F Hi: 22°C72°F |
Sunny Tuesday, temperatures as high as 72°F22°C, low temperature around 56°F14°C, chance of rain 2%, wind out of the WSW 8 mph13 km/h. Barometric pressure 29.97 in1015 mb, visibility 6 mi10 km, humidity 52%. |
Wed, 2nd Lo: 13°C55°F Hi: 23°C74°F |
Cloudy Wednesday, temperatures as high as 74°F23°C, low temperature around 55°F13°C, chance of rain 3%, wind out of the WSW 7 mph12 km/h. Barometric pressure 30.03 in1017 mb, visibility 6 mi10 km, humidity 47%. |
| Thu, 3rd Lo: 12°C54°F Hi: 23°C74°F |
Sunny Thursday, temperatures as high as 74°F23°C, low temperature around 54°F12°C, chance of rain 2%, wind out of the W 8 mph13 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi10 km, humidity 48%. |
| Fri, 4th Lo: 11°C53°F Hi: 23°C73°F |
Overcast Friday, temperatures as high as 73°F23°C, low temperature around 53°F11°C, chance of rain 3%, wind out of the WSW 7 mph11 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 37%. |
| Sat, 5th Lo: 12°C54°F Hi: 24°C76°F |
Sunny Saturday, temperatures as high as 76°F24°C, low temperature around 54°F12°C, chance of rain 1%, wind out of the WSW 7 mph11 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 42%. |
| Sun, 6th Lo: 13°C55°F Hi: 21°C71°F |
Sunny Sunday, temperatures as high as 71°F21°C, low temperature around 55°F13°C, chance of rain 1%, wind out of the WSW 8 mph13 km/h. Barometric pressure 29.88 in1012 mb, visibility 6 mi10 km, humidity 46%. |
| Mon, 7th Lo: 12°C54°F Hi: 25°C76°F |
Sunny Monday, temperatures as high as 76°F25°C, low temperature around 54°F12°C, chance of rain 1%, wind out of the WSW 5 mph8 km/h. Barometric pressure 29.8 in1009 mb, visibility 6 mi10 km, humidity 38%. |
| Tue, 8th Lo: 12°C53°F Hi: 29°C85°F |
Sunny Tuesday, temperatures as high as 85°F29°C, low temperature around 53°F12°C, wind out of the NW 2 mph4 km/h. Barometric pressure 29.74 in1007 mb, visibility 6 mi10 km, humidity 27%. |
Wed, 9th Lo: 14°C57°F Hi: 17°C63°F |
Light rain shower Wednesday, temperatures as high as 63°F17°C, low temperature around 57°F14°C, chance of rain 37%, wind out of the WSW 3 mph5 km/h. Barometric pressure 29.91 in1013 mb, visibility 6 mi10 km, humidity 86%. |
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