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Iowa City

Water Temperature in Iowa City in Iowa River: Current and Forecast

On this page, you will find comprehensive information about the water temperature in Iowa City in Iowa River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Iowa City

21.1°C

TODAY

21.2°C

YESTERDAY

20.3°C

A WEEK AGO

As of today, the minimum water temperature in Iowa City ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Iowa River in Iowa City Over the Last 30 Days

Today the water temperature in Iowa City is higher than the same day in previous years. The water temperature range here in May is from 8°C to 21°C. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Iowa City are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Table of Daily Water Temperature Data

DateCurrentAverageForecast
May 2120.3°C13.4°C
May 2220.3°C13.4°C
May 2320.3°C13.4°C
May 2420.2°C13.4°C
May 2520.4°C13.4°C
May 2620.5°C13.4°C
May 2721.2°C13.4°C
May 2821.1°C13.4°C
May 2913.4°C20.6°C
May 3013.4°C20.2°C
May 3113.4°C19.8°C
Jun 118.5°C19.7°C
Jun 218.5°C19.6°C
Jun 318.5°C19.5°C
Jun 418.5°C19.4°C
Jun 518.5°C19.3°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Iowa City by Month

January

MinimumAverageMaximum
1°C5°C9°C

February

MinimumAverageMaximum
1°C5°C9°C

March

MinimumAverageMaximum
2°C6.5°C11°C

April

MinimumAverageMaximum
5°C9.9°C16°C

May

MinimumAverageMaximum
8°C13.4°C21°C

June

MinimumAverageMaximum
14°C18.5°C22°C

July

MinimumAverageMaximum
17°C20°C24°C

August

MinimumAverageMaximum
17°C21.4°C23°C

September

MinimumAverageMaximum
11°C17.6°C19°C

October

MinimumAverageMaximum
8°C13.3°C16°C

November

MinimumAverageMaximum
3°C8.1°C16°C

December

MinimumAverageMaximum
3°C4.7°C8°C

Monthly Water Temperature Histogram for Iowa River in Iowa City

Iowa City Weather

MAY 29

11°C / 20°C
moderate drizzle

rain: 19% | wind: 15 km/h

MAY 30

10°C / 23°C
moderate drizzle

rain: 19% | wind: 19 km/h

MAY 31

12°C / 26°C
overcast

rain: 19% | wind: 15 km/h

JUNE 1

15°C / 27°C
light drizzle

rain: 19% | wind: 12 km/h

JUNE 2

17°C / 28°C
overcast

rain: 3% | wind: 18 km/h

Water Temperature in Iowa City: General Trends and Swimming Opportunities

In Iowa City, Iowa, the Iowa River runs through the heart of the city, offering some opportunities for water-based activities. However, similar to other rivers in the area, swimming in the Iowa River is generally not recommended due to strong currents and water quality concerns. During the summer months, the river's water temperature can rise to around 70°F to 80°F (21°C to 27°C), which might seem inviting, but the water quality often fluctuates with rainfall and runoff from surrounding areas, affecting its safety for recreational swimming.

The Iowa River's flow can be swift, especially after storms or during spring runoff, making swimming dangerous in many areas. While there may be some calm spots where people might wade or cool off, the current risks and water quality are significant concerns. Additionally, pollution, including bacteria from agricultural runoff, can compromise the water's cleanliness and make it unsafe for contact recreation.

Though the Iowa River might not be ideal for swimming, Iowa City offers alternative ways to enjoy water activities. Local parks, lakes, and swimming pools provide safer options for swimming, including the popular Coralville Lake located just outside of Iowa City, which is known for its designated swimming areas. For those looking for a river experience, kayaking, canoeing, and fishing on the Iowa River are popular activities and can be enjoyed with proper safety precautions.

Geographical Location of Iowa City

Frequently Asked Questions About Iowa City and its Water Temperatures

What is the current water temperature in Iowa City?

The water temperature today in Iowa City is 70°F (21.1°C).

What is the water temperature in Iowa City during the summer months?

The average water temperature in Iowa City during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Iowa City in May?

The average water temperature in Iowa City in May ranges from 46°F to 70°F (8°C to 21°C).

What is the water temperature in Iowa City in September?

The average water temperature in Iowa City in September is typically between 52°F to 66°F (11°C to 19°C).

Is it possible to swim in the Iowa River in Iowa City, and what are the available options for doing so?

Yes, it is technically possible to swim in the Iowa River in Iowa City, although it's not commonly done due to safety and cleanliness concerns. There are no officially designated swimming areas, but some people choose to swim at their own risk.