Hailey (ID) Temperature by Month
Hailey in Idaho, United States of America sees significant seasonal temperature differences, with daytime highs between 0°C (32°F) in January and 29°C (84°F) in July, averaging 13°C (55°F) annually. Explore the full monthly breakdown below.
Hailey Monthly Temperatures
The weather in Hailey experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 11°C (52°F) in July to -11°C (12°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Hailey 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.
The chart below shows the average temperature throughout the year:
Temperature: Hailey vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Hailey vs World: Temperature Compared
Hailey's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Hailey's weather — including monthly rainfall, sunshine hours, and humidity — visit our Hailey climate page.
