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Great Falls

Great Falls

© Gordon Grainger

Water Temperature in Great Falls in Missouri River: Current and Forecast

On this page, you will find comprehensive information about the water temperature in Great Falls in Missouri River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Great Falls

52°F

TODAY

52°F

YESTERDAY

54°F

A WEEK AGO

As of today, the minimum water temperature in Great Falls ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Missouri River in Great Falls Over the Last 30 Days

Today the water temperature in Great Falls is lower than the same day in previous years. The water temperature range here in October is from 46°F to 63°F. The water temperature has decreased over the past 7 days but has increased over the past month.

The forecasted water temperature values for Great Falls are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Table of Daily Water Temperature Data

DateCurrentAverageForecast
Oct 1554°F55°F
Oct 1653°F55°F
Oct 1753°F55°F
Oct 1853°F55°F
Oct 1953°F55°F
Oct 2053°F55°F
Oct 2152°F55°F
Oct 2252°F55°F
Oct 2355°F53°F
Oct 2455°F53°F
Oct 2555°F53°F
Oct 2655°F53°F
Oct 2655°F53°F
Oct 2755°F53°F
Oct 2855°F53°F
Oct 2955°F53°F
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Great Falls by Month

January

MinimumAverageMaximum
34°F41°F48°F

February

MinimumAverageMaximum
34°F41°F48°F

March

MinimumAverageMaximum
34°F43°F52°F

April

MinimumAverageMaximum
37°F49°F61°F

May

MinimumAverageMaximum
43°F56°F70°F

June

MinimumAverageMaximum
55°F64°F72°F

July

MinimumAverageMaximum
63°F68°F75°F

August

MinimumAverageMaximum
63°F71°F73°F

September

MinimumAverageMaximum
52°F60°F68°F

October

MinimumAverageMaximum
46°F55°F63°F

November

MinimumAverageMaximum
37°F47°F61°F

December

MinimumAverageMaximum
37°F40°F46°F

Monthly Water Temperature Histogram for Missouri River in Great Falls

Great Falls Weather

OCTOBER 23

43°F / 61°F
overcast

rain: 2% | wind: 17 mph

OCTOBER 24

45°F / 64°F
overcast

rain: 1% | wind: 22 mph

Water Temperature in Great Falls: General Trends and Swimming Opportunities

In Great Falls, Montana, the Missouri River runs through the city, providing stunning landscapes and recreational opportunities. However, the water temperature of the river can be quite cold, particularly in the spring and early summer months. During this time, the water temperature typically ranges from 40°F to 55°F (4°C to 13°C), making swimming in the river uncomfortable and potentially dangerous due to the cold, fast-moving currents. The presence of rocks, debris, and strong undertows also makes the Missouri River less ideal for casual swimming.

In the summer, the water temperature in the Missouri River can rise slightly, reaching more tolerable levels of around 60°F to 70°F (15°C to 21°C), especially in the calmer sections. While these temperatures might be acceptable for brief wading or cooling off, the river's strong current still presents challenges for swimming. Many locals and visitors prefer other water-based activities such as fishing, kayaking, and boating, which allow for more control and enjoyment in the river's waters.

For those looking for a safer, more comfortable swimming experience, Great Falls offers several public swimming pools and nearby lakes. These areas provide warm, controlled environments ideal for swimming, with temperatures typically around 78°F to 82°F (26°C to 28°C). Additionally, nearby recreational areas like Giant Springs State Park offer peaceful locations for picnicking and enjoying nature, along with areas for safer water-based activities during the warmer months.

Geographical Location of Great Falls

Frequently Asked Questions About Great Falls and its Water Temperatures

What is the current water temperature in Great Falls?

The water temperature today in Great Falls is 52°F (11.3°C).

What is the water temperature in Great Falls during the summer months?

The average water temperature in Great Falls during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Great Falls in May?

The average water temperature in Great Falls in May ranges from 46°F to 70°F (8°C to 21°C).

What is the water temperature in Great Falls in September?

The average water temperature in Great Falls in September is typically between 52°F to 66°F (11°C to 19°C).

Is it possible to swim in the Missouri River in Great Falls, and what are the available options for doing so?

Yes, it is possible to swim in the Missouri River at Great Falls. However, options are limited and typically revolve around designated swimming areas or river-access parks, given the river's potentially dangerous current and temperature.