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Cardiff Weather Forecast
| REST OF THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | | |  |  |  | |  |  |
| Chance of T-Storm | Chance of T-Storm | Isolated Showers | Showers | Showers | Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Partly Cloudy |
| Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C |
| POP: 40% | POP: 70% | POP: 20% | POP: 90% | POP: 90% | POP: 60% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 455 PM EDT Sun Sep 20 2026 
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Issued: 314 PM EDT Sun Sep 20 2026
Key Messages
- 1) Numerous showers expected through this evening. Turning much cooler Monday and through the rest of the week.
- 2) Cool & wet conditions persist through the end of the week, with drier conditions heading into the weekend.
Discussion
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KEY MESSAGE 1...Numerous showers expected through this evening. Turning much cooler Monday and through the rest of the week.
Extensive cloudiness has limited instability all day with VIS imagery and NUCAPS data showing only southern MD having received eno...