Sierra Vista (AZ) Temperature by Month
The average annual maximum temperature in Sierra Vista, Arizona, United States of America is 25°C (77°F), with daytime highs ranging from 16°C (61°F) in December to 35°C (95°F) in June. This page covers monthly averages, day-night differences, and how Sierra Vista compares to cities worldwide.
Sierra Vista Monthly Temperatures
The climate in Sierra Vista is dynamic, ranging widely from moderate in winter to very warm in summer. Nights are significantly colder, with lows dropping from 18°C (64°F) in June to 1°C (34°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Sierra Vista by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: Sierra Vista 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.
very warm
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moderate
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Sierra Vista vs World: Temperature Compared
Sierra Vista's average annual maximum temperature is 25°C (77°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.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Sierra Vista's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sierra Vista climate page.
