Although weather is just one factor, it can really affect your travel plans, especially if you are planning a longer stay in Fort Towson. The hottest months are usually August and July, with an average temperature of 27°C, while the coldest months are January and February, with an average of 8°C. The rainiest months in Fort Towson are May, April, October and March, with each month seeing an average of 177 mm of rainfall.