Stillwater (OK) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Stillwater.
Climate overview of Stillwater
Stillwater, Oklahoma, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 34°C (93°F) in July, while winters cool to 10°C (50°F) in January.
Stillwater sees a moderate amount of rain/snowfall, totalling around 901 mm (35 in) per year. It experiences a distinct dry season from December to January, with very warm summers and cold winters, creating some seasonal variation.
Stillwater Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Stillwater - and find the best time to visit.
Monthly Temperature in Stillwater
Depending on the time of the year, temperatures range from very warm to chilly in Stillwater. Average maximum daytime temperatures range from a very warm 34°C (93°F) in July, the warmest time of the year, to a chilly 10°C (50°F) during cooler months like January.
At night, you can expect temperatures ranging from 22°C (72°F) in July to around -4°C (25°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Stillwater
Generally, Stillwater has a moderate amount of precipitation, averaging 901 mm (35 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives high rainfall, averaging 129 mm (5.1 in) of precipitation, recorded across 12 rainy days. In contrast, the driest month January brings less rainfall, with 19 mm (0.7 in) over 3 rainy days. For more details, please visit our Stillwater Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Stillwater
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: October
- Warmest weather: July and August
- Fewest rainy days: January and November
- Seasonal pattern: A distinct dry season from December to January, with very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -4°C (25°F).
Frequently asked questions about the climate in Stillwater
What is the best time to visit Stillwater?
October typically offers the most optimal weather in Stillwater. In contrast, July, August and December tend to have less optimal conditions. Stillwater has a distinct dry season from December to January, with very warm summers and cold winters.
What temperatures can I expect in Stillwater?
Daytime highs range from 10°C (50°F) in January to 34°C (93°F) in July. Nighttime lows range from -4°C (25°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Stillwater get?
Annual rainfall is around 901 mm (35 in). May is the wettest month with 129 mm (5.1 in), while January is the driest with 19 mm (0.7 in).
Stillwater 3-Day Forecast
Stillwater on the map
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