Weather World
Barnum, IA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Barnum Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 | |  |  | |  |  | | | |  |  |
| Showers | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers |
| Lo: 59°FLo: 15°C | Hi: 61°FHi: 16°C | Lo: 60°FLo: 16°C | Hi: 60°FHi: 16°C | Lo: 60°FLo: 16°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C |
| POP: 70% | POP: 50% | POP: 100% | POP: 100% | POP: 70% | POP: 40% | POP: 80% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Fri Sep 25 2026 
Barnum Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Barnum Weather Map
Barnum Quick Facts
Barnum Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1055 PM CDT Thu Sep 24 2026
Key Messages
- Periods or rain with a few embedded thunderstorms through early Sunday. Total rainfall amounts of 1 to 2 inches are possible over parts of central and southwest Iowa.
- Another strong storm system expected Tuesday and Tuesday night. Thunderstorms with heavy rainfall are possible.
- Highs generally in the 60s and low 70s.
Aviation
/06Z TAFS THROUGH 06Z SATURDAY/... Issued at 1054 PM CDT Thu Sep 24 2026
While rain is tapering off in most areas, another wave will be entering southwest Iowa at ...