Arkansas River water temperature
Arkansas River, Catlin Dam, near Fowler, Colorado · River
The current water temperature at Arkansas River is 18.7 °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 261 data points since July 23, 2026.
Lowest recorded value: 17.6 °C on July 25, 2026 · highest value: 32.4 °C on July 27, 2026.
In September, temperatures have ranged between 18.1 °C and 31.1 °C.
The current value is 5.1 °C below the September average of this series.
Nearby waters
More measuring points: Arkansas River
Frequently asked questions
Can you swim at Arkansas River right now?
The current water temperature is 18.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Arkansas River?
Currently 18.7 °C (updated continuously).
How warm is at Arkansas River in September?
In September, the water temperature recently averaged 23.8 °C.
When is the water warmest at Arkansas River?
Across the measurement record, August is on average the warmest month (24.5 °C).
