UV Index
UV Index
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Today's UV index in Sioux City, United States 
will be up to 4.4, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 4.4 in Sioux City, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Sioux City, Iowa experiences a humid continental climate, with a moderate UV index averaging around 4-5 during the summer months. This is slightly lower than the national average, indicating a relatively moderate risk of UV radiation exposure.
The city has distinct weather seasons, with cold winters and warm summers. Winters typically bring temperatures below freezing, while summers can reach up to 90°F (32°C). Spring and fall seasons are mild, with average temperatures ranging from 40°F to 60°F (4°C to 15°C).
Compared to the Midwest region, Sioux City's weather is relatively similar, with neighboring cities like Omaha, Nebraska, and Des Moines, Iowa, experiencing similar climate patterns. In contrast, neighboring countries like Canada experience colder winters and shorter summers, while states in the southern United States have longer summers and milder winters.