Harrison County, IA Weather Forecast
County weather hub
Slight Chance Showers And Thunderstorms then Sunny
Compare major city weather across Harrison County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 89. North wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
County Weather Overview
This county weather page brings together forecast coverage for Harrison County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Harrison County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 21 to Jul 25, 2026
- Latest sync
- Jul 19, 2026 12:45 PM CDT
- Forecast office
- OAX
- Source
- NOAA / NWS
Daily Outlook
This Week in Harrison County
Saturday looks like the warmest upcoming period in Harrison County at 90 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 14 mph N.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 19, 2026 12:45 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- OAX
- Radar station
- KOAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 63. North northeast wind 2 to 9 mph, with gusts as high as 16 mph.
Partly sunny, with a high near 83. North northeast wind around 3 mph.
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. East southeast wind around 5 mph.
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South southeast wind 3 to 9 mph, with gusts as high as 16 mph.
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Southeast wind around 8 mph.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. Southeast wind around 8 mph.
Partly cloudy, with a low around 65. East southeast wind 3 to 8 mph.
Mostly sunny, with a high near 90. Southeast wind 3 to 7 mph.
Mostly clear, with a low around 69. South southeast wind 3 to 7 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 21
|
Slight Chance Showers And Thunderstorms then Sunny
|
89°F |
6 to 14 mph
N
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
63°F |
2 to 9 mph
NNE
|
|
Wednesday
Jul 22
|
Partly Sunny
|
83°F |
3 mph
NNE
|
|
Wednesday Night
Jul 22
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
63°F |
5 mph
ESE
|
|
Thursday
Jul 23
|
Chance Showers And Thunderstorms
|
81°F |
3 to 9 mph
SSE
|
|
Thursday Night
Jul 23
|
Chance Showers And Thunderstorms
|
65°F |
8 mph
SE
|
|
Friday
Jul 24
|
Chance Showers And Thunderstorms
|
84°F |
8 mph
SE
|
|
Friday Night
Jul 24
|
Partly Cloudy
|
65°F |
3 to 8 mph
ESE
|
|
Saturday
Jul 25
|
Mostly Sunny
|
90°F |
3 to 7 mph
SE
|
|
Saturday Night
Jul 25
|
Mostly Clear
|
69°F |
3 to 7 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Harrison County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Harrison County.
Largest mapped city population in this region: 2,576.
