Missouri River water temperature
Missouri River, Toston, Montana · River
The current water temperature at Missouri River is 15.6 °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 284 data points since July 23, 2026.
Lowest recorded value: 14.0 °C on September 15, 2026 · highest value: 26.3 °C on July 25, 2026.
In September, temperatures have ranged between 14.0 °C and 19.9 °C.
The current value is 2.0 °C below the September average of this series.
Nearby waters
More measuring points: Missouri River
Frequently asked questions
Can you swim at Missouri River right now?
The current water temperature is 15.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Missouri River?
Currently 15.6 °C (updated continuously).
How warm is at Missouri River in September?
In September, the water temperature recently averaged 17.6 °C.
When is the water warmest at Missouri River?
Across the measurement record, July is on average the warmest month (24.1 °C).
