UV Index
UV Index
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Today's UV index in Gilbert, United States 
will be up to 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 in Gilbert, 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.
The UV index in Gilbert, United States, is generally high due to its location in the desert. On average, the UV index can reach levels of 9 or higher from April to September.
Gilbert experiences two main seasons: a hot, dry summer and a mild winter. Summer temperatures often exceed 100°F, while winter temperatures rarely drop below freezing. The city receives minimal rainfall, with most of it occurring during the monsoon season from July to September.
Compared to its region and neighboring countries, Gilbert's climate is quite unique. Unlike the lush, tropical climates found in Central America and Mexico, Gilbert's desert climate results in low humidity and minimal rainfall throughout the year. This makes Gilbert's weather significantly different from its southern neighbors. In contrast, the western regions of the United States, such as the Pacific Northwest, receive more rainfall and have milder summers due to their coastal locations.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Gilbert. It's designed to provide you with a better understanding of the yearly weather and sun exposure.