Fort Sill

Planning your day in Fort Sill? Check the latest weather updates and forecasts right here to stay prepared for whatever nature has in store.

The climate in Fort Sill is continental, with four distinct seasons. Travelers should expect significant temperature variations throughout the year. Summers here are hot, with average maximum temperatures often exceeding 30°C, especially in July and August. Winters, by contrast, are cool, with average temperatures hovering around 6-8°C and lows sometimes dropping to freezing or slightly below.

Spring and autumn are transitional seasons with more moderate temperatures. Spring, especially May, sees the highest amount of precipitation and rainy days, though overall rainfall levels remain relatively low throughout the year. Summer and winter tend to be drier. The number of rainy days in most months is low, indicating a predominance of sunny weather, particularly during the summer period.

Overall, the weather in Fort Sill offers a wide variety: from hot summer days, perfect for outdoor activities (provided you have sun protection), to cool winter months that require warm clothing. The most comfortable temperatures for a visit are likely during the spring and autumn months, though you should be prepared for changeable weather, especially in May when the chance of rain is higher.

Fort Sill experiences a pronounced annual temperature cycle with hot summers and cool winters. The hottest months are typically July and August, when average daytime temperatures stay steadily around 30°C, and maximums can reach 35.7°C (in July) and 35.3°C (in August). Nights during these months also remain warm, with minimum temperatures around 24.3°C. The coldest months are January and February. The average temperature in January is about 6.1°C, with nightly lows potentially dropping to 0.3°C and daytime highs rarely exceeding 11.8°C. February is slightly warmer, with an average temperature of 7.1°C.

The summer period in Fort Sill is characterized by high temperatures. From June, when the average temperature reaches 27.6°C, through the end of August, the thermometer often rises above 30°C. Maximum daytime temperatures in June can reach 33.1°C, and in July and August, they exceed 35°C. Even nights remain quite warm, with minimum temperatures rarely falling below 22°C in June and 24°C in July-August. This indicates hot weather that can feel like a dry heat, given the relatively low precipitation during the summer months.

Winter in Fort Sill brings a significant cooldown compared to the summer. From December to February, average temperatures range from 6.1°C to 8.5°C. Daytime highs during this period are usually between 11-14°C, creating a cool atmosphere. However, nights can be quite cold, especially in January and February when minimum temperatures approach the freezing point (0.3°C - 0.9°C). Throughout the year, there are noticeable daily temperature fluctuations: the difference between daytime highs and nightly lows is often 10-13°C, which is especially palpable during the transitional seasons and winter.

The city of Fort Sill experiences relatively low precipitation throughout the year, with a noticeable peak in late spring. The highest amount of rainfall occurs in May, which is the wettest month both in terms of total volume (5 mm) and the number of rainy days (averaging 12 days). Generally, the spring months, including March and April, bring more precipitation compared to other seasons.

The spring period, particularly May, is characterized by the highest probability of rain. However, even in this wettest month, total precipitation remains moderate, suggesting mostly light or brief showers. March and April also contribute to spring moisture: March averages 8 rainy days with 2 mm of precipitation, and April has 7 rainy days with 3 mm.

The driest periods in Fort Sill are summer and winter. Summer months, such as July and August, receive minimal precipitation (just 1 mm each) and have about 6 rainy days each. In winter, during January and December, there is also only 1 mm of precipitation, and the number of rainy days decreases to 4. Given that minimum temperatures in winter can drop to freezing or slightly below, the small amount of precipitation during this time may fall as light snow or freezing rain, though total volumes remain insignificant.

When planning a trip to Fort Sill, it is important to consider the weather variability throughout the year to ensure your stay is as comfortable as possible. The key is layering your clothing, as temperatures can change noticeably even within a single day. Regardless of the season, comfortable walking shoes are a must, as you will likely want to explore the surroundings.

Summer months (June-August) in Fort Sill are characterized by hot weather, with average temperatures around 27-30°C and highs reaching 35°C. We recommend bringing light, breathable clothing made of natural fabrics, shorts, and t-shirts, and don't forget sunscreen, a hat, and sunglasses. Winter (December-February), on the other hand, is quite cool, with average temperatures of 6-8°C and nightly lows dropping close to zero. You will need warm items: sweaters, a jacket (possibly insulated), a hat, gloves, and a scarf.

Spring (March-May) and autumn (September-November) are transitional seasons with a wide range of temperatures. It remains cool in March and November, while May and September offer pleasant warmth. An ideal solution is to bring both light items and jumpers or a fleece, as well as a windbreaker or light jacket. Although total precipitation in Fort Sill is low, May sees the highest number of rainy days (about 12). Therefore, a compact umbrella or a light raincoat may come in handy, especially during this period, though they are useful in other months as well in case of sudden rain, as the number of rainy days typically fluctuates between 4 and 8.