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St. Croix River at Stillwater, Minnesota water temperature

St. Croix River at Stillwater, Minnesota · River

The current water temperature at St. Croix River at Stillwater is 24.8 °C (as of September 2, 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.

24.8 °C
Measured: September 2, 2026 · continuously updated
Temperature trend of recent weeks
St. Croix River at Stillwater, Minnesota
Photo: Michael Hicks from Saint Paul, MN, USA · CC BY 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 462 data points since July 8, 2026.

Lowest recorded value: 22.4 °C on August 28, 2026 · highest value: 30.9 °C on July 16, 2026.

In September, temperatures have ranged between 24.2 °C and 24.8 °C.

The current value is 0.3 °C above the September average of this series.

Nearby waters

Rice Creek below Old Hwy. 8 in Mounds View, Minnesota · 31.5 km away25.4 °CMinnehaha Creek at Hiawatha Ave. in Minneapolis, Minnesota · 35.9 km away25.1 °CShingle Creek at Queen Ave in Minneapolis, Minnesota · 39.9 km away22.3 °CSt. Croix River at St. Croix Falls, Wisconsin · 40.8 km away24.2 °CEau Galle River at Spring Valley, Wisconsin · 49.8 km away21.5 °C

Frequently asked questions

Can you swim at St. Croix River at Stillwater right now?
The current water temperature is 24.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at St. Croix River at Stillwater?
Currently 24.8 °C (updated continuously).

How warm is at St. Croix River at Stillwater in September?
In September, the water temperature recently averaged 24.5 °C.

When is the water warmest at St. Croix River at Stillwater?
Across the measurement record, July is on average the warmest month (28.0 °C).

Open in the BrrChecker app

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