Johnson County, IA Weather Forecast
County weather hub
Chance Rain Showers
Compare major city weather across Johnson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers after 7am. Mostly cloudy. High near 60, with temperatures falling to around 56 in the afternoon. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
County Weather Overview
This county weather page brings together forecast coverage for Johnson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 6 of 6 mapped cities in Johnson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 11 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 1:57 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Johnson County
Tuesday looks like the warmest upcoming period in Johnson County at 82 degrees F.
Thursday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Sunday at about 15 to 20 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 1:57 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A 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 54. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Showers and thunderstorms. Mostly cloudy, with a high near 71. Chance of precipitation is 80%.
Showers and thunderstorms before 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 80%.
Partly sunny, with a high near 80.
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 65. Chance of precipitation is 40%.
A chance of rain showers before 7am, then showers and thunderstorms likely. Mostly sunny, with a high near 82. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 72. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
A chance of rain showers. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
A chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Chance Rain Showers
|
60°F |
5 to 15 mph
E
|
|
Saturday Night
Apr 11
|
Chance Showers And Thunderstorms
|
54°F |
15 mph
S
|
|
Sunday
Apr 12
|
Showers And Thunderstorms
|
71°F |
15 to 20 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms
|
61°F |
10 to 20 mph
SW
|
|
Monday
Apr 13
|
Partly Sunny
|
80°F |
10 to 15 mph
SW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms
|
65°F |
10 to 15 mph
SW
|
|
Tuesday
Apr 14
|
Showers And Thunderstorms Likely
|
82°F |
10 to 20 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms Likely
|
57°F |
15 mph
SW
|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms
|
72°F |
15 mph
W
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
52°F |
10 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
78°F |
5 to 15 mph
S
|
|
Thursday Night
Apr 16
|
Chance Showers And Thunderstorms
|
51°F |
10 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Johnson County.
Coverage
Forecast coverage currently spans 6 of 6 mapped cities in Johnson County.
Largest mapped city population in this region: 75,130.
