June marks the beginning of summer in the United States, bringing a wide range of weather conditions across various regions. From sweltering heat in the South to lingering cool breezes in the Northwest, understanding what to expect from the weather can make a major difference in planning summer vacations, outdoor activities, or simply preparing for seasonal changes. For a comprehensive regional weather forecast, visit Wisemeteo.com.
Southern States
The Southern states — including Florida, Georgia, and Texas — often experience summer temperatures before June officially begins. Daytime highs often climb into the upper 80s and 90s °F (30–35°C), with humidity intensifying the heat. For residents of these areas, June is often the continuation of a heatwave that began weeks earlier.
Northern States
In contrast, northern regions such as Minnesota, Maine, and parts of the Midwest often don’t feel like summer until mid-June. Nighttime temperatures can still dip into the low 50s°F (around 10°C), with gradual warming as the month progresses.
Western and Mountainous Areas
Elevated areas such as Utah and Colorado tend to experience spring-like weather in early June, marked by brisk mornings and pleasant afternoons. These mountainous zones often deal with ongoing snowmelt in June, which may impact outdoor recreation like hiking. On the West Coast, especially in areas like Los Angeles, June often starts with persistent morning overcast known as “June Gloom.”
Typical June Temperatures and Rainfall Across the Country
Understanding regional climate variations is key to knowing what the weather is like in the USA in June. A 2025 outlook suggests continued trends of warming, with some regions experiencing slightly higher-than-average temperatures and sporadic rainfall.
Northeast and New England
Cities like Boston and New York typically experience temperatures ranging from 65°F to 80°F (18°C–27°C) in June.
Southeast and Gulf Coast
The Southeast is both hot and humid. In cities like Atlanta and New Orleans, June temperatures hover in the upper 80s°F (30–32°C). Thunderstorms are frequent, especially in the late afternoon. Florida often records up to 8 inches of rainfall in June, placing it high on the list of the wettest times of the year.
Midwest
Midwestern states such as Illinois, Indiana, and Ohio experience mild to warm weather in June. June temperatures usually sit between 70°F and 85°F, with 3 to 5 inches of rain common — much of it from storms or extreme weather. Rainfall is variable, but June is often one of the rainier months, with totals of 3 to 5 inches (75–125 mm), often tied to thunderstorms and the occasional severe weather event.
South and Southwest
This region is known for extreme heat. Phoenix, Arizona, regularly reaches highs above 105°F (40°C) in June, while Texas cities like Austin and San Antonio average around 95°F (35°C). Rainfall is generally low, especially in desert areas, but the eastern parts of Texas may still see sporadic thunderstorms.
Pacific Northwest
Seattle and Portland remain relatively cool in June. Temperatures range from 55°F to 75°F (13°C–24°C). Rainfall decreases compared to spring, typically around 1 to 2 inches (25–50 mm), making it one of the drier months in the region.
California and the Southwest Coast
In Los Angeles and San Diego, “June Gloom” dominates early summer. Temperatures stay mild, around 70°F (21°C), and foggy mornings are common. Inland areas, like the Central Valley, get much hotter, often nearing 95°F (35°C).
How to Prepare for Weather Changes in June 2025
The best way to enjoy June in the U.S. is to be weather-aware. Since June straddles spring and summer, conditions can vary rapidly, even within the same state.
Pack Versatile Clothing
If you’re traveling across regions or even within states, prepare for a wide range of temperatures. Light, breathable fabrics are a must in the South and Southwest, while the North and mountain states might still require a jacket for the evenings.
Be Aware of Storm Risks
June is the start of hurricane season in the Atlantic. While major hurricanes are rare this early, tropical storms and heavy rains can disrupt travel and outdoor plans, especially in the Southeast. Always check local forecasts when visiting coastal areas.
Thunderstorms are also common in the Midwest and South. These can sometimes become severe, with hail, damaging winds, or even tornadoes. Make sure you’re signed up for weather alerts if you live in or are visiting these areas.
Hydration and Sun Protection
The UV index rises sharply in June. Regardless of the region, sunscreen, hats, and sunglasses are essential. Dehydration is a risk in hot and dry regions like Arizona and Nevada—drink plenty of water, especially during physical activity.
Final Thoughts
So, what is the weather like in the USA in June? A 2025 outlook reveals a pattern of regional extremes — scorching sun in the South, delayed warmth in the North, and a mix of fog and clear skies in the West. Whether you’re planning a vacation, hiking trip, or simply trying to beat the heat, understanding these regional nuances can help you make the most of early summer.
Remember, the USA is vast, and June weather varies widely from state to state. Stay prepared, stay flexible, and most importantly, stay safe as summer begins to take hold.
