Weather World
Riordan, MO Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Riordan Weather Forecast
| THIS AFTERNOON | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY |
 |  | |  |  | | |  |  | |  | |
| Sunny | Partly Cloudy | Sunny | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Sunny |
| Hi: 95°FHi: 35°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Hi: 71°FHi: 22°C Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C |
| POP: 50% | POP: 50% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Fri Sep 18 2026 
Riordan Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Riordan Weather Map
Riordan Quick Facts
Riordan Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1230 PM CDT Fri Sep 18 2026
Key Messages
- Quiet, Hot Weather Conditions Today
- Showers/Storms on Saturday
- Cold Front Sunday Leads to Cooler Temperatures Through Next Week
Discussion
... Issued at 237 AM CDT Fri Sep 18 2026
594dam H5 heights spread across much of the central CONUS and Gulf Region this morning with a developing trough over the western CONUS. At the surface, high pressure currently sits over the Upper Midwest while a surface cyclone is developing across the Front Range. The dCVA with this western CONUS trough will ...