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Janesville
Water Temperature in Janesville in Rock River: Current and Forecast
On this page, you will find comprehensive information about the water temperature in Janesville in Rock 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 Janesville
39°F
TODAY
39°F
YESTERDAY
39°F
A WEEK AGO
As of today, the minimum water temperature in Janesville ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.
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 Rock River in Janesville Over the Last 30 Days
Today the water temperature in Janesville is lower than the same day in previous years. The water temperature range here in February is from 36°F to 48°F. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for Janesville 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
| Date | Current | Average | Forecast |
|---|---|---|---|
| Feb 16 | 39°F | 42°F | |
| Feb 17 | 38°F | 42°F | |
| Feb 18 | 39°F | 42°F | |
| Feb 19 | 39°F | 42°F | |
| Feb 20 | 39°F | 42°F | |
| Feb 21 | 38°F | 42°F | |
| Feb 22 | 39°F | 42°F | |
| Feb 23 | 39°F | 42°F | |
| Feb 24 | 42°F | 39°F | |
| Feb 25 | 42°F | 39°F | |
| Feb 26 | 42°F | 39°F | |
| Feb 27 | 42°F | 39°F | |
| Feb 28 | 42°F | 40°F | |
| Mar 1 | 44°F | 40°F | |
| Mar 2 | 44°F | 40°F | |
| Mar 3 | 44°F | 40°F |
Water Temperature Ranges in Janesville by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 36°F | 42°F | 48°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 36°F | 42°F | 48°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 44°F | 52°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 65°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 64°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 61°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram for Rock River in Janesville
Known Beaches in the Area of Janesville?
Lions Beach
Lions Beach is a 1-stars sandy beach, located in a 2 km (1 miles) radius of Janesville.
Janesville Weather
FEBRUARY 23
14°F / 36°F
overcastrain: 3% | wind: 12 mph
FEBRUARY 24
28°F / 46°F
overcastrain: 7% | wind: 12 mph
FEBRUARY 25
36°F / 41°F
light drizzlerain: 27% | wind: 15 mph
FEBRUARY 26
32°F / 43°F
slight rainrain: 42% | wind: 18 mph
FEBRUARY 27
32°F / 41°F
overcastrain: 38% | wind: 10 mph
FEBRUARY 28
32°F / 46°F
fograin: 11% | wind: 14 mph
Water Temperature in Janesville: General Trends and Swimming Opportunities
Janesville, Wisconsin, is located along the Rock River, which flows through the city and offers a variety of recreational opportunities. The water temperature in the Rock River can vary throughout the year, with summer temperatures generally ranging from 60°F to 70°F (16°C to 21°C). Early in the summer, the river tends to be a bit cooler due to spring runoff, but as the season progresses, the water warms up, making it more comfortable for activities like canoeing, kayaking, and fishing.
Swimming in the Rock River in Janesville isn't as common due to the relatively cool temperatures and the river's currents. While some sections of the river have slower-moving water and are suitable for wading or brief dips, the overall water temperature is often too cold for extended swimming. The river's flow can also present challenges, particularly in areas with stronger currents, making it less ideal for casual swimming.
For those seeking a more traditional swimming experience, Janesville offers access to local public pools where the water temperature is kept between 78°F and 82°F (25°C to 28°C). Additionally, nearby lakes, such as the Lake Koshkonong to the north, provide warmer water conditions for swimming, particularly later in the summer when the water in these larger bodies tends to warm up more quickly. While the Rock River is better suited for boating and fishing, it remains a scenic and peaceful spot for outdoor recreation.
Geographical Location of Janesville
Nearby Cities
Frequently Asked Questions About Janesville and its Water Temperatures
What is the current water temperature in Janesville?
The water temperature today in Janesville is 39°F (3.7°C).
What is the water temperature in Janesville during the summer months?
The average water temperature in Janesville 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 Janesville in May?
The average water temperature in Janesville in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in Janesville in September?
The average water temperature in Janesville in September is typically between 52°F to 66°F (11°C to 19°C).
Is it possible to swim in the Rock River in Janesville, and what are the available options for doing so?
Yes, it's possible to swim in the Rock River in Janesville, with options including public access points like Traxler Park and private properties by the river. However, remember to always respect private properties and safety guidelines.