Coeur d'Alene (ID) Temperature by Month

Coeur d'Alene in Idaho, United States of America sees significant seasonal temperature differences, with daytime highs between 2°C (36°F) in December and 29°C (84°F) in July, averaging 15°C (59°F) annually. Explore the full monthly breakdown below.

Depending on the time of the year, temperatures range from warm to very cold in Coeur d'Alene. Nighttime lows follow the same pattern, ranging from 13°C (55°F) to -4°C (25°F).

The chart below illustrates the average maximum day and minimum night temperatures in Coeur d'Alene by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 383 hours of sunshine.

The chart below shows the average temperature throughout the year:

Coeur d'Alene's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.

In Coeur d'Alene, December is the coolest month, with average highs of 2°C (36°F) and humidity around 86%, considered very high. In July, the warmest month, temperatures average 29°C (84°F) with 44% humidity, conditions that feel moderate. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Coeur d'Alene this rarely lasts long on the ground.

For more on Coeur d'Alene's weather, including monthly rainfall, sunshine hours, and humidity, visit our Coeur d'Alene climate page.