Johnson County, IA Weather Forecast

County weather hub

69°
F

Sunny

Compare major city weather across Johnson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.

Monday, May 11, 2026
Wind: 0 to 5 mph NE
Monday

Sunny, with a high near 69.

County weather hub

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
May 11 to May 13, 2026
Latest sync
May 7, 2026 6:43 PM CDT
Forecast office
DVN
Source
NOAA / NWS
Next High
69°F
Monday
Next Low
48°F
Monday Night
Rain Outlook
3
Periods mentioning precipitation
Windiest
5 to 15 mph
Monday Night

Daily Outlook

Today
May 11
Sunny
69 °F
/ 48°F
Wind 0 to 5 mph
Tue
May 12
Showers And Thunderstorms Likely
72 °F
/ 46°F
Wind 15 mph
Wed
May 13
Sunny
73 °F
/ 49°F
Wind 5 to 10 mph

This Week in Johnson County

Wednesday looks like the warmest upcoming period in Johnson County at 73 degrees F.

Tuesday Night is the coolest period ahead with temperatures near 46 degrees F.

The strongest winds are forecast for Monday Night at about 5 to 15 mph E.

Precipitation is mentioned in 3 upcoming forecast periods.

Forecast Details

Last updated
May 7, 2026 6:43 PM CDT
Coverage
3 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 source

Extended Forecast

Monday Night
May 11
48°F
Showers And Thunderstorms Likely
5 to 15 mph E

Showers and thunderstorms likely after 7pm. Partly cloudy, with a low around 48. Chance of precipitation is 60%.

Tuesday
May 12
72°F
Showers And Thunderstorms Likely
15 mph SW

Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 72. Chance of precipitation is 60%.

Tuesday Night
May 12
46°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
5 to 15 mph NW

A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 46.

Wednesday
May 13
73°F
Sunny
5 to 10 mph N

Sunny, with a high near 73.

Wednesday Night
May 13
49°F
Mostly Clear
5 to 10 mph E

Mostly clear, with a low around 49.

Detailed Forecast

Period Conditions Temp Wind
Monday
May 11
Sunny
69°F
0 to 5 mph
NE
Monday Night
May 11
Showers And Thunderstorms Likely
48°F
5 to 15 mph
E
Tuesday
May 12
Showers And Thunderstorms Likely
72°F
15 mph
SW
Tuesday Night
May 12
Slight Chance Showers And Thunderstorms then Partly Cloudy
46°F
5 to 15 mph
NW
Wednesday
May 13
Sunny
73°F
5 to 10 mph
N
Wednesday Night
May 13
Mostly Clear
49°F
5 to 10 mph
E
Johnson county courhouse iowa
Johnson county courhouse iowa image
Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.