Des Plaines River water temperature
Des Plaines River, Route 53 at Joliet, Illinois · River
The current water temperature at Des Plaines River is 21.1 °C (as of September 21, 2026, source: USGS).
A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.
Measurement series & statistics
This measurement series includes 161 data points since July 23, 2026.
Lowest recorded value: 21.1 °C on September 21, 2026 · highest value: 27.5 °C on September 6, 2026.
In September, temperatures have ranged between 21.1 °C and 27.5 °C.
The current value is 4.8 °C below the September average of this series.
Nearby waters
More measuring points: Des Plaines River
Frequently asked questions
Can you swim at Des Plaines River right now?
The current water temperature is 21.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Des Plaines River?
Currently 21.1 °C (updated continuously).
How warm is at Des Plaines River in September?
In September, the water temperature recently averaged 25.9 °C.
When is the water warmest at Des Plaines River?
Across the measurement record, September is on average the warmest month (25.9 °C).
