What to Wear in Tulsa in September
September in Tulsa marks the transition out of the brutal Oklahoma summer, but don't expect cool fall weather just yet. Early September still feels like summer, with daytime highs regularly hitting the upper 80s to low 90s°F (around 31–34°C). By late September, temperatures begin to ease into the mid-70s°F during the day, with nights dropping into the mid-50s°F (around 13°C). Humidity remains noticeable through most of the month, making it feel warmer than the thermometer suggests. September is one of Tulsa's wetter months, with an average of around 3.5 inches of rainfall, often arriving as afternoon or evening thunderstorms — a hallmark of Oklahoma's volatile weather. Your best outfit strategy is to dress in breathable, lightweight layers. Start the day in a light cotton or linen top, shorts or a casual summer dress, and swap to jeans or chinos with a light jacket or cardigan by late afternoon or evening. Comfortable walking shoes with good grip are smart given the possibility of wet sidewalks after sudden downpours. Keep a compact umbrella or packable rain jacket in your bag daily — storms can develop quickly. Sunglasses and SPF are still essential through the entire month.
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Frequently Asked Questions
What to wear in Tulsa in September?+
Lightweight, breathable clothing works best for daytime in Tulsa in September, as temperatures can still reach the upper 80s to low 90s°F. Plan for layering with a light jacket or cardigan for cooler evenings, especially later in the month when nights can dip into the mid-50s°F. A compact rain jacket or umbrella is essential given the frequency of afternoon thunderstorms.
Is Tulsa cold in September?+
Tulsa is not cold in September — it's more accurately described as a late-summer month with gradually cooling evenings. Daytime highs are typically in the 80s to low 90s°F in early September, easing toward the mid-70s°F by month's end. Nights can feel noticeably cooler, especially after the 20th, so a light layer is worth having on hand.
Does it rain in Tulsa in September?+
Yes, September is one of the rainier months in Tulsa, averaging around 3.5 inches of precipitation for the month. Rain typically arrives as short but heavy afternoon or evening thunderstorms, which can develop quickly with little warning. Carrying a packable rain jacket or compact umbrella every day is a practical move.
What should I pack for Tulsa in September?+
Pack a mix of summer and transitional clothing — lightweight tops, shorts, and breathable dresses for daytime heat, plus a few pairs of jeans or light trousers and a cardigan or thin jacket for cooler evenings. Include sunglasses, sunscreen, and a compact umbrella or rain jacket to handle both the lingering sun and the frequent afternoon storms. Comfortable, waterproof-soled shoes are a smart choice given the wet weather risk.