2025 summer outlook; Today Marks the Start of Summer—and the Heat Is Just Getting Started in Imperial Valley
IMPERIAL VALLEY — The first day of summer has officially arrived, and with it, a season of high heat, uncertain rainfall, and ongoing drought conditions across the Imperial Valley. Federal climate forecasts suggest a hotter-than-average summer ahead, with only a modest increase in the chances for monsoonal storms.
According to the National Weather Service Climate Prediction Center, Imperial Valley faces a 33–40% probability of above-normal temperatures from July through September 2025. This outlook signals more than just triple-digit afternoons—it points to prolonged heatwaves, warmer nights, and added pressure on public health and water systems.
Heat to Peak in July, But Early Surges Possible
Historically, July marks the climatological peak of summer temperatures in the desert Southwest, but forecasters warn that June could also bring early-season heat spikes into the high 100s (°F). Compounding the danger, nighttime lows are expected to remain elevated, providing less relief during overnight hours.
Health officials advise residents to stay hydrated, avoid strenuous activity during midday, and check on vulnerable individuals, particularly older adults and those without access to cooling systems. Outdoor workers are urged to schedule breaks and work in shaded areas whenever possible.
Monsoon Outlook: Slightly More Active, But Unpredictable
The North American Monsoon, which typically brings a seasonal uptick in thunderstorm activity, is forecast to show modest improvement over last year. For the early part of the season—June through mid-July—the Climate Prediction Center reports equal chances for below, near, or above-normal rainfall. However, in late July through September, there’s a 33–40% chance of above-average precipitation, indicating a slight tilt toward more frequent thunderstorms.
Even a few well-placed monsoonal surges can bring intense localized rainfall, often leading to flash flooding in washes, arroyos, and poorly drained urban zones. The National Weather Service reminds residents: Turn Around, Don’t Drown—never drive through flooded roadways.
Drought Remains Despite Rain Potential
Despite the possibility of enhanced monsoon activity, drought conditions remain entrenched across the region. The Desert Southwest, including Imperial County, continues to experience severe to extreme drought, placing stress on water supplies, ecosystems, and agricultural operations.
Local water agencies continue to enforce conservation guidelines, including:
Limiting outdoor watering to designated days and times
Encouraging the use of drought-resistant landscaping (xeriscaping)
Promoting efficient irrigation methods, such as drip systems
Wildfire risk is also elevated, particularly during dry periods before the monsoon begins in earnest.
Ways to stay safe in the scorching Imperial Valley heat…
The heat is back, and it’s no surprise to longtime Imperial Valley residents—where summer often feels like it arrives weeks before the calendar says so. While many out-of-state visitors may not be used to the scorching desert temperatures, locals know just how dangerous the season can be. With highs regularly exceeding 110°F, staying safe isn’t just a matter of comfort—it’s critical.
Stay indoors during peak heat (typically 12 p.m. to 6 p.m.)
Use air conditioning or fans, or visit public cooling centers if needed
Wear lightweight, loose-fitting, light-colored clothing
Avoid strenuous activity during the hottest parts of the day
Never leave children or pets in vehicles, even for a short time
Apply sunscreen with SPF 30 or higher and reapply every 2 hours
Check on elderly neighbors, young children, and those with health conditions
Know the signs of heat-related illness, such as dizziness, nausea, or confusion
How to Hydrate Properly in Extreme Heat (CDC Guidelines)
Drink water every 15–20 minutes, even if you’re not thirsty
Avoid alcohol, sugary drinks, and caffeine, as they can increase dehydration
Eat hydrating foods, such as fruits and vegetables with high water content
Carry a reusable water bottle if you’re outdoors or traveling
For outdoor workers: drink about 1 cup (8 oz.) of water every 15–20 minutes
As summer 2025 begins, Imperial Valley residents are urged to stay weather-aware, conserve water, and take heat precautions seriously. Weather patterns may shift from day to day, but the broader outlook remains clear: it’s going to be a long, hot summer.