Union Weather in September

September in Union typically sees daytime highs of 29°C (84°F) and nighttime lows of 17°C (63°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Union in September

Historically, the month has about 9 days of rain, averaging 101 mm (4 in) in total. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Union in September

If you're visiting Union in September, expect highs of 29°C (84°F) and overnight lows around 17°C (63°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Union in September

The days are predominantly sunny, with an estimated total of around 235 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If you prefer enjoying temperate temperatures and rain-free days, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Union's climate page.

Union Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 29%  

Precipitation 101 mm (4 in)  

Rainy days 9 days  

Humidity 70% *  

Sunshine 235 hours *  

Percentage Sunshine 63% *  

* Data from: Tulsa, the United States of America (14 KM, 9 Miles).

What to Wear in Union in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Union in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Union's climate page.

More climate data for Union

Temperature Rainfall Sunshine Humidity

See the full Union climate overview or explore weather in the United States of America.