Monthly Temperature Averages and Climate for Fort Sill, OK

Adventure graphic for climate page specific to each city and state

Fort Sill, OK has a longitude of -98.4 degrees and a latitude of 34.7 degrees.

Fort Sill, OK has temperatures that can go as high as 89.6 °F in June, 94.9 °F in July, and 94.9 °F in August. The hottest month is typically July.

Fort Sill, OK also has temperatures that can go as low as 30.2 °F in December, 30.2 °F in January, and 33.5 °F in February. The coldest month is typically December.

The wettest month for Fort Sill, OK is June with 9.8 inches of rain.

The annual weather and monthly temperature averages for highs and lows are presented in the table below. The weather values used to interpolate these values are provided by the US NAOO weather station values from the last 10 years.

Average High (°F)51.755.764.373.582.489.694.994.986.275.362.751.5
Average Low (°F)30.233.540.848.359.067.871.371.762.751.539.130.2
Average Precipitation (in)
Tree Graphic for climate page specific to city and state for annual weather site

Oklahoma is in a humid subtropical region. Over almost all of Oklahoma, winter is the driest season. Average monthly precipitation increases dramatically in the spring to a peak in May, the wettest month over most of the state, with its frequent and not uncommonly severe thunderstorm activity.

Mid-summer (July and August) represents a secondary dry season over much of Oklahoma, with long stretches of hot weather with only sporadic thunderstorm activity not uncommon many years. Severe drought is common in the hottest summers. Snowfall ranges from an average of less than 4 in (102 mm) in the south to just over 20 in (508 mm) on the border of Colorado.

In reality, each climate is unique and finding one that is suitable can be a real challenge! We hope that the information here can be the starting point of your weather and climate research for your next vacation or potentially next home.

We hope you use this information to make your travel plans to Fort Sill, OK or decide if living in the Fort Sill climate is the right choice for you!

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