Climate Insights for Iron River

The climate in Iron River is cool. The average annual temperature is 5°C and approximately 1003mm of precipitation falls per year. Iron River receives a notable amount of rainfall throughout the year, including during its driest month. Iron River is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to -12°C. Iron River experiences heavy snowfall, typically from January through December.

Iron River has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 20°C. The coldest month is January, when overnight lows fall to -12°C and the daily average is -9°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 9°C shift in average temperatures.

Iron River is a moderately rainy area, receiving approximately 1003mm of precipitation annually, which averages out to around 84mm per month. The wettest month is October, averaging 122mm of rainfall. September and August also tend to see above-average precipitation. The driest month is January, with just 51mm. That's 71mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Iron River receives heavy snowfall, accumulating around 262cm annually from January through December. The snowiest month is February, with approximately 50cm. Winter travel should account for significant snow cover.

Iron River is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently spring in Iron River, which began on March 20, 2026. Iron River is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 27°C, while the coldest stretch bottoms out in January near -12°C. Summer is next, beginning on June 21, 2026 — 1 days from now.

The best time to visit Iron River is during June, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 99mm per month. By contrast, July can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to -12°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Iron River based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.