Security, CO Weather Forecast
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| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
| Mostly Cloudy | Partly Sunny | Mostly Cloudy | Mostly Sunny | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy |
| Lo: 50°FLo: 10°C | Hi: 75°FHi: 24°C | Lo: 53°FLo: 12°C | Hi: 77°FHi: 25°C | Lo: 50°FLo: 10°C | Hi: 62°FHi: 17°C | Lo: 41°FLo: 5°C | Hi: 57°FHi: 14°C Lo: 37°FLo: 3°C | Hi: 57°FHi: 14°C Lo: 37°FLo: 3°C | Hi: 57°FHi: 14°C | Lo: 37°FLo: 3°C | Hi: 64°FHi: 18°C Lo: 37°FLo: 3°C |
| POP: 10% | POP: 60% | POP: 90% | POP: 50% | POP: 50% | POP: 10% | POP: 10% |
POP = Probability of Precipitation.
Weather Outlook Updated: 927 PM MDT Wed Oct 21 2026 

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Issued: 527 PM MDT Wed Oct 21 2026
Key Messages
- Periods of moderate to heavy rain expected over the southwest mountains through Friday, with the heaviest rainfall occurring Thursday night.
- A Flood Watch is in effect until Friday afternoon for the eastern San Juan mountains and the Upper Rio Grande Valley, with stream/river flooding and rock/mud slides possible.
- Over the remainder of the Continental Divide rainfall be lighter, with amounts around 1 inch possible. Scattered showers and much lighter rainfall forecast for the eastern ...
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