Arnold, IA Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Arnold, IA in one place.
Mostly cloudy, with a high near 71. North northwest wind 5 to 10 mph.
Local Weather Overview
This forecast page for Arnold, 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: Sep 15, 2026 1:43 PM CDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Arnold, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 1:43 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Arnold
Friday looks like the warmest upcoming period in Arnold at 78 degrees F.
Monday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Friday at about 10 to 16 mph SE.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 1:43 PM CDT
- Coverage
- 7 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 cloudy. Low around 52, with temperatures rising to around 54 overnight. North northeast wind 2 to 6 mph.
Partly sunny. High near 69, with temperatures falling to around 67 in the afternoon. East wind 6 to 10 mph. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers after 1am. Mostly cloudy. Low around 58, with temperatures rising to around 61 overnight. South southeast wind 1 to 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers. Mostly cloudy, with a high near 76. North northeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 78. Chance of precipitation is 90%.
Showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 90%.
Showers and thunderstorms. Mostly cloudy, with a high near 76. Chance of precipitation is 90%.
A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly sunny, with a high near 69.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 50.
Mostly sunny, with a high near 69.
Partly cloudy, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Sep 15
|
Mostly Cloudy
|
71°F |
5 to 10 mph
NNW
|
|
Tonight
Sep 15
|
Mostly Cloudy
|
52°F |
2 to 6 mph
NNE
|
|
Wednesday
Sep 16
|
Partly Sunny
|
69°F |
6 to 10 mph
E
|
|
Wednesday Night
Sep 16
|
Mostly Cloudy then Chance Rain Showers
|
58°F |
1 to 7 mph
SSE
|
|
Thursday
Sep 17
|
Chance Rain Showers
|
76°F |
5 mph
NNE
|
|
Thursday Night
Sep 17
|
Chance Showers And Thunderstorms
|
60°F |
5 to 10 mph
E
|
|
Friday
Sep 18
|
Showers And Thunderstorms
|
78°F |
10 to 16 mph
SE
|
|
Friday Night
Sep 18
|
Showers And Thunderstorms
|
63°F |
12 to 16 mph
S
|
|
Saturday
Sep 19
|
Showers And Thunderstorms
|
76°F |
12 mph
WNW
|
|
Saturday Night
Sep 19
|
Chance Showers And Thunderstorms
|
55°F |
9 mph
N
|
|
Sunday
Sep 20
|
Slight Chance Showers And Thunderstorms
|
69°F |
9 mph
NNE
|
|
Sunday Night
Sep 20
|
Slight Chance Rain Showers then Partly Cloudy
|
50°F |
3 to 7 mph
NE
|
|
Monday
Sep 21
|
Mostly Sunny
|
69°F |
6 mph
NE
|
|
Monday Night
Sep 21
|
Partly Cloudy
|
49°F |
3 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Arnold.