Grand Calumet River water temperature
Grand Calumet River, Columbia Av at Hammond, Indiana · River
The current water temperature at Grand Calumet River is 21.0 °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 154 data points since July 23, 2026.
Lowest recorded value: 21.0 °C on September 21, 2026 · highest value: 27.3 °C on September 2, 2026.
In September, temperatures have ranged between 21.0 °C and 27.3 °C.
The current value is 3.6 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Grand Calumet River right now?
The current water temperature is 21.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Grand Calumet River?
Currently 21.0 °C (updated continuously).
How warm is at Grand Calumet River in September?
In September, the water temperature recently averaged 24.6 °C.
When is the water warmest at Grand Calumet River?
Across the measurement record, September is on average the warmest month (24.6 °C).
