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Johnson County (Iowa City)
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United States weather

10 day weather forecast for Johnson County

Saturday, October 31st, 2026, at 11:47 PM
Today
Patchy rain possible
17° 11°
Tomorrow
Overcast
18° 13°
Monday
Light rain
20° 13°
Tuesday
Light rain
20° 9°
Wednesday
Light rain
16° 7°
Thursday
Moderate rain
13° 9°
Friday
Moderate rain
11° 8°
 More Details See
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Johnson County Weather Pages

Johnson County weather forecast

The weather forecast for Johnson County over the next 5 days indicates chilly conditions with temperatures ranging from 16 °C to 20 °C.

Rain is expected today and will continue at least through Wednesday.

Wind speeds are expected to be strong, averaging around 25.2 km/h.

Weather today

Johnson County 14 days weather forecast

This weeks weather in Johnson County. Click on a date for detailed forecasts
Sat. 31
17°
11°
Patchy rain possible
2.1 mm
Sun. 1
18°
13°
Overcast
0.3 mm
Mon. 2
20°
13°
Light rain
3.8 mm
Tue. 3
20°
9°
Light rain
9.7 mm
Wed. 4
16°
7°
Light rain
3.8 mm
Thu. 5
13°
9°
Moderate rain
11.8 mm
Fri. 6
11°
8°
Moderate rain
19.6 mm
Sat. 7
10°
6°
Overcast
0 mm
Sun. 8
11°
4°
Overcast
0 mm
Mon. 9
11°
4°
Partly cloudy
0 mm
Tue. 10
12°
2°
Sunny
0 mm
Wed. 11
11°
2°
Partly cloudy
0 mm
Thu. 12
11°
3°
Partly cloudy
0 mm
Fri. 13
9°
6°
Light rain
6.3 mm
Further Ahead
Select a date

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Access Johnson County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
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Johnson County long range weather forecast

30 day weather forecast for Johnson County
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate rain
22°
2
Sunny
24°
3
Overcast
25°
4
Sunny
25°
5
Sunny
26°
6
Sunny
21°
7
Sunny
22°
8
Sunny
22°
9
Patchy rain possible
24°
10
Sunny
23°
11
Overcast
25°
12
Patchy rain possible
25°
13
Light rain
20°
14
Light rain
16°
15
Light rain
15°
16
Sunny
17°
17
Sunny
19°
18
Light rain
21°
19
Light rain
19°
20
Sunny
23°
21
Sunny
20°
22
Patchy rain possible
21°
23
Partly cloudy
18°
24
Moderate or heavy rain shower
17°
25
Patchy rain possible
17°
26
Overcast
17°
27
Partly cloudy
17°
28
Light rain
18°
29
Moderate rain
18°
30
Thundery outbreaks possible
15°
31
Patchy rain possible
17°
Important Notice
Our Johnson County long range weather forecast is based on historical data analysis rather than real-time forecasting models. While this provides a general outlook, weather conditions can change. We recommend checking the forecast closer to your planned date for the most current information.

Rain Forecast for the Next 14 Days in Johnson County

A total of 57.5 mm is expected over 7 rainy days. The wettest day is Friday 6, with 19.6 mm. Click a day for details.
Sat. 31
2.1
2.1 mm
74%
Sun. 1
0.3
0.3 mm
43%
Mon. 2
3.8
3.8 mm
83%
Tue. 3
9.7
9.7 mm
84%
Wed. 4
3.8
3.8 mm
69%
Thu. 5
11.8
11.8 mm
91%
Fri. 6
19.6
19.6 mm
91%
Sat. 7
0 mm
17%
Sun. 8
0 mm
21%
Mon. 9
0 mm
11%
Tue. 10
0 mm
6%
Wed. 11
0 mm
7%
Thu. 12
0 mm
13%
Fri. 13
6.3
6.3 mm
85%

Frequently asked questions about the weather in Johnson County

How warm is it in Johnson County over the next 14 days?
Over the next two weeks, temperatures in Johnson County are expected to range from around 2 °C on the coldest nights up to about 20 °C on the warmest days. Use this range to plan what to pack and wear.

Will it rain in Johnson County in the next two weeks?
Yes - rain is expected on about 7 of the next 14 days in Johnson County, with roughly 57.5 mm of rainfall in total. It is worth keeping an umbrella or raincoat handy.

How windy is it in Johnson County?
Maximum wind speeds in Johnson County are forecast to reach about 42.1 km/h at their peak over the next 14 days.

When is the best time to visit Johnson County?
For a month-by-month look at temperatures and rainfall, see our best time to visit Johnson County guide.

How accurate is the 14-day forecast for Johnson County?
Our Johnson County forecast uses leading meteorological models and is most reliable over the next few days. Long-range days beyond a week show general trends and can change, so check back closer to the date for updates.
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Iowa CityOlatheOverland Park
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