August is a hot summer month in Oklahoma with long days and bright sunshine. The average high temperatures are in the harsh 92°F (33.3°C) to 96°F (35.6°C) zone, while the nights fare better in the range of 65°F (18.3°C) to 73°F (22.8°C). The rainfall is in the 3" (76mm) to 4" (102mm) range with a decrease in storm activity. Campgrounds rarely remain vacant with the clear weather that offers fantastic stargazing opportunities in the vast open prairie. An insect repellent is a must while camping in open tents. Tallgrass Prairie National Preserve sees numerous footfalls in the summer with its pretty drives and frequent wildlife sightings. The hot weather and heightened humidity see a dash towards water spots. Western Oklahoma sees extreme temperatures that can occasionally touch 115°F (46.1°C) and stay there for days. Mornings and evenings are better for outdoor activities with long daylight hours and bright sunshine. It is better to visit Oklahoma when the conditions are mild than the scorching heat of August.