| Mon May 20 | Tue May 21 | Wed May 22 | Thu May 23 | |
| Tmin 18-06 |
12°C | 12°C | 12°C | 8°C |
| Tmax 06-18 |
23°C | 24°C | 17°C | 17°C |
| morning 24-06 |
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| a.m. 06-12 |
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| p.m. 12-18 |
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| evening 18-24 |
| Nearby Forecast Locations - Walnut Creek | Distance |
| Alamo | 1.9 km |
| Lafayette | 7.6 km |
| Moraga | 9.5 km |
| Pleasant Hill | 10.3 km |
| Danville | 12.7 km |
| Orinda | 13.2 km |
| Concord | 13.3 km |
| Martinez | 17.5 km |
| Pittsburg | 18.0 km |
| Berkeley | 19.1 km |
| Castro Valley | 20.4 km |
| San Leandro | 22.2 km |
| Antioch | 23.0 km |
| Emeryville | 23.7 km |
| Hayward | 23.9 km |
| San Lorenzo | 23.9 km |
| Alameda | 24.2 km |
| Benicia | 25.2 km |
| Pleasanton | 25.2 km |
| Hercules | 25.3 km |
| El Cerrito | 25.5 km |
| Livermore | 25.6 km |
| Oakland | 25.6 km |
| El Sobrante | 25.9 km |
| Pinole | 26.8 km |
| Hayward | 27.9 km |
| San Pablo | 30.0 km |
| Forecast: Walnut Creek Region Only Tuesday blemishes the predominantly fine weather. Rain is not to be expected during the daytime. From 24 degrees on Monday the daily high will go down to 17 degrees on Wednesday. |