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
Expect around 9 days of rain based on historical data, with 84 mm (3.3 in) average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Union in September
September is a perfect month in Union, with 29°C (84°F) during the day and 17°C (63°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Union.
Check the conditions for any month of the year.
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
30%
Precipitation
84 mm (3.3 in)
Rainy days
9 days
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Union in September
Warm but pleasant conditions in Union in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags.What To Do in Union in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
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.
See the full Union climate overview or explore weather in the United States of America.
