Stillwater (OK) Temperature by Month

Stillwater, Oklahoma, United States of America has an average annual maximum temperature of 22°C (72°F), ranging from 10°C (50°F) in January to 34°C (93°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The climate in Stillwater is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 22°C (72°F) in July to -4°C (25°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Stillwater by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.

The chart below shows the average temperature throughout the year:

Stillwater's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

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

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 Stillwater's weather, including monthly rainfall, sunshine hours, and humidity, visit our Stillwater climate page.