Security, CO Weather Forecast
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Security Weather Forecast
| REST OF TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Chance of T-Storm | Chance of T-Storm | Partly Sunny | Partly Cloudy | Chance of T-Storm | Mostly Cloudy | Mostly Cloudy | Chance of T-Storm | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Partly Cloudy |
| Hi: 90°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 91°FHi: 33°C | Lo: 61°FLo: 16°C | Hi: 92°FHi: 33°C | Hi: 88°FHi: 31°C Lo: 60°FLo: 16°C | Hi: 88°FHi: 31°C Lo: 60°FLo: 16°C | Lo: 60°FLo: 16°C | Hi: 86°FHi: 30°C | Lo: 60°FLo: 16°C | Hi: 88°FHi: 31°C | Lo: 60°FLo: 16°C |
| POP: 10% | POP: 10% | POP: 10% | POP: 50% | POP: 30% | POP: 10% |
POP = Probability of Precipitation.
Weather Outlook Updated: 917 AM MDT Sat Sep 05 2026 

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Issued: 444 PM MDT Sat Sep 5 2026
Key Messages
- Isolated to scattered shower and thunderstorm activity this afternoon and again on Sunday, mainly over the mountains and our eastern plains south of Highway 50.
- Better moisture moves in starting on Monday, with temperatures slowly dropping a few degrees into next week.
Aviation
/00Z TAFS THROUGH 00Z MONDAY/... Issued at 444 PM MDT Sat Sep 5 2026
VFR conditions are expected at KALS, KCOS, and KPUB through 24 hours.
KALS: Winds will lighten overnight, remaining diurnal into Sunday morning ...
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