Barnum, IA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Barnum, IA in one place.
Sunny, with a high near 89. North northwest wind 3 to 7 mph.
Local Weather Overview
This forecast page for Barnum, IA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 17, 2026 4:16 PM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Barnum, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 4:16 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Barnum
Monday looks like the warmest upcoming period in Barnum at 99 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 16 mph NNW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 4:16 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 64. East northeast wind 2 to 6 mph.
Sunny, with a high near 90. Southeast wind 2 to 6 mph.
Partly cloudy, with a low around 73.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 99. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Sunny, with a high near 85.
Mostly clear, with a low around 60.
Mostly sunny, with a high near 82.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60.
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Sunny
|
89°F |
3 to 7 mph
NNW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
64°F |
2 to 6 mph
ENE
|
|
Sunday
Jul 19
|
Sunny
|
90°F |
2 to 6 mph
SE
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
73°F |
8 mph
S
|
|
Monday
Jul 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
99°F |
9 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
70°F |
6 to 9 mph
NW
|
|
Tuesday
Jul 21
|
Sunny
|
85°F |
10 to 16 mph
NNW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
60°F |
3 to 14 mph
N
|
|
Wednesday
Jul 22
|
Mostly Sunny
|
82°F |
3 mph
N
|
|
Wednesday Night
Jul 22
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
60°F |
3 mph
SE
|
|
Thursday
Jul 23
|
Slight Chance Showers And Thunderstorms
|
84°F |
5 mph
SSW
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
63°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Barnum.