Stillwater, OK weather and climate in 2025
Day
10 °C
Night
-2 °C
Sea
0 °C
Precipitation
42 mm
in month
Rainy days
5 days
in month
Daylight
10 hours
average
Sunshine
5 hours
average
Humidity
69 %
Day
10 °C
Night
-2 °C
Sea
0 °C
Precipitation
42 mm
in month
Rainy days
5 days
in month
Daylight
10 hours
average
Sunshine
5 hours
average
Humidity
69 %
Overview: Stillwater, OK
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Weather overview for Stillwater, OK
Weather overview
Stillwater, Oklahoma boasts a temperate climate with distinct seasons, providing a variety of weather year-round. Winters are cool with occasional cold snaps, while summers can be intensely hot and humid. Peak temperatures in July can soar up to 34 °C (94 °F). Though precipitation is fairly evenly distributed, majority falls during the spring and summer months, reaching up to 130 mm (5.12 in) in May. The fewest wet days are in January, averaging 4 days. Spring and autumn offer milder temperatures and are generally pleasant.
January weather
January in Stillwater starts the year with chillier temperatures, and days are still short with an average of 6 hours of sun. The daytime highs reach around 9 °C (49 °F), while nights can be brisk with an average temperature of -4 °C (25 °F). With 4 days of rain, January is one of the drier months, so precipitation isn't a big concern.
February weather
February brings a slight increase in temperatures with average highs reaching 12 °C (54 °F) and nights slightly less cold at around -1 °C (29 °F). The number of wet days inches up to 5 days, and occasional rains bring a total of 44 mm (1.72 in). The sun starts to appear more frequently, offering about 6 hours per day.
March weather
March in Stillwater sees a considerable shift towards spring as day temperatures reach an average high of 17 °C (63 °F). Night temperatures also become milder averaging 4 °C (39 °F). The likelihood of rain grows, with 7 days expected to be wet and a rainfall total around 82 mm (3.21 in). Sunlight duration extends to about 7 hours a day, signaling the start of a sunnier season.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.April weather
April ushers in the true essence of spring in Stillwater. Daytime temperatures are enjoyable at an average high of 22 °C (72 °F), with nights at a comfortable 9 °C (48 °F). With 8 days averaging as wet, rainfall amounts to approximately 88 mm (3.48 in), making it one of the wetter months, while sunshine averages at 9 hours per day.
May weather
May in Stillwater brings warmth as temperatures rise up to an average high of 27 °C (80 °F) during the day and remain mild at night with 14 °C (58 °F). The trend of rainfall continues with around 11 days recorded as wet days, and the highest monthly precipitation at 130 mm (5.12 in). Sunshine is plentiful with an average of 9 hours per day, yet humidity starts to increase, making it feel warmer.
June weather
June in Stillwater marks the beginning of summer, with the temperature reaching an average high of 31 °C (88 °F). Nights are warmer with an average low of 19 °C (66 °F). Humidity can be palpable, given the relative humidity averages 67 %. The number of wet days is nominally fewer, about 10 days, but rainfall totals 121 mm (4.78 in). Sun hours are at their peak, averaging 10 hours per day.
July weather
July is the hottest month in Stillwater, OK with daytime highs soaring to 34 °C (94 °F). It's almost as dry as June, with rainfall averaging around 79 mm (3.11 in) across 7 days. Humidity levels are also high, creating a very warm atmosphere. One can expect around 11 hours of sunshine a day, making it a prime time for outdoor summer activities.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.August weather
August is very similar to July in terms of temperature, with an average high of 34 °C (94 °F), keeping the heat strong in Stillwater. However, nights begin to get a tad cooler, averaging 21 °C (69 °F). The number of wet days is slightly increased compared to July, at 8 days. Humidity and rainfall, averaging at 85 mm (3.34 in), can make the weather feel steamy. Sunshine hours slightly decrease to around 10 hours per day.
September weather
September in Stillwater begins the transition to fall, with daytime temperatures dropping to an average high of 30 °C (85 °F) and nights cooling down to 16 °C (61 °F). A slight decrease in wet days to 7 days contrasts with the warmth of the summer, and rainfall also decreases to about 99 mm (3.89 in). The sunshine hours start to fall, now averaging around 8 hours per day.
October weather
October in Stillwater features cooler autumnal weather as the high average temperature dips to 23 °C (74 °F), and nights become brisk, averaging 9 °C (49 °F). The wet days are on a decline to about 7 days, and rainfall reduces correspondingly to 83 mm (3.28 in). Sunlight starts to shorten to an average of 7 hours per day, creating splendid conditions for enjoying fall colors.
November weather
November brings a notable chill to Stillwater with average daytime highs at 16 °C (61 °F) and nights cooling down to an average of 3 °C (38 °F). The number of wet days remains relatively low at 5 days, but there is still a small risk of showers with total rainfall approximating 56 mm (2.22 in). Daylight decreases to around 6 hours as winter approaches.
December weather
December sees the onset of colder weather as Stillwater prepares for winter. Day temperatures hover around an average high of 10 °C (50 °F), while nights can dip to an average of -2 °C (28 °F). The sun retreats earlier with about 5 hours of daylight. The chance of precipitation is akin to November, with the city experiencing around 5 days of wet days and a modest 42 mm (1.67 in) of rainfall.
FAQs
How should I dress for a January day in Stillwater?
Dressing in layers is key for January in Stillwater. A warm coat, hats, gloves, and a scarf are advisable to combat the cold, especially during nights with temperatures averaging -4 °C (25 °F).
Can we expect much warmth in Stillwater during February?
February in Stillwater offers a bit more warmth compared to January, with daytime temperatures edging up to 12 °C (54 °F). However, nights remain cool, so keep warm clothes handy.
How warm does it get during the day in Stillwater in March?
Daytime in Stillwater becomes notably warmer with average highs rounding up to 17 °C (63 °F). It's a pleasant shift towards spring, perfect for light jackets or sweater weather.
What kind of temperatures can I expect in Stillwater in April?
April in Stillwater is characterized by pleasant temperatures, averaging highs of 22 °C (72 °F) during the day, which is perfect for outdoor activities and shedding those heavy winter layers.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.Is May considered warm in Stillwater?
Yes, May is considered quite warm in Stillwater with an average high of 27 °C (80 °F), making it a great time to enjoy the transition to summer conditions.
How hot does it get in Stillwater during June?
June sees temperatures climbing up to a toasty 31 °C (88 °F), so staying hydrated and using sun protection is a must in the summer heat of Stillwater.
Will I need lightweight clothing in Stillwater, OK for July?
Lightweight, breathable clothing is definitely recommended for July in Stillwater, as the temperatures can get exceedingly hot, averaging 34 °C (94 °F) during the day.
How would you describe the weather in Stillwater during August?
Weather in Stillwater during August remains scorching with an average high of 34 °C (94 °F), so continuing to dress coolly and wear sun protection is essential.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.Is September still warm enough for outdoor activities in Stillwater?
Absolutely, September retains enough warmth with daytime highs of 30 °C (85 °F), making it ideal for outdoor events and festivals as the summer heat eases.
How cool does it get during the day in Stillwater in October?
October days in Stillwater become noticeably cooler with average daytime temperatures reaching 23 °C (74 °F), a gentle reminder that fall is in full swing.
What should I wear in Stillwater during the month of November?
In November, you should prepare for chilly conditions in Stillwater. Warm layers and a medium-weight coat will suffice for the average daytime highs of 16 °C (61 °F).
Does it get very cold in Stillwater in December?
December in Stillwater does start to feel cold, especially at night with average lows dipping to -2 °C (28 °F); appropriate winter attire is advisable.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.