Phoenix is known for its warm winters, but this February’s heatwave is taking things to the next level. After a brief spell of cooler weather, a strong high-pressure system is sweeping across Arizona, pushing temperatures to unseasonably high levels that could break records.
Residents should brace for summerlike conditions well ahead of schedule, with some forecasts suggesting that Phoenix could reach 90°F before the end of the month. This is a stark contrast to the average February high of 71°F, and a reminder that spring in the desert can arrive much earlier than expected.
How Hot Will It Get? Here’s the Breakdown
After a mild start to the month, temperatures are now on a steady rise, climbing well above normal for this time of year. Here’s what to expect in the coming days:
- Tuesday, February 18 – A pleasant but warm day, with highs reaching 77°F under partly sunny skies.
- Wednesday, February 19 – A touch warmer, with highs hitting 79°F, and some cloud cover moving in.
- Thursday, February 20 – Phoenix officially crosses into the 80s, with a forecast high of 80°F.
- Friday, February 21 – A brief cooldown into the upper 70s, though still well above seasonal norms.
- Saturday & Sunday, February 22-23 – The heat comes roaring back as Phoenix surges to 81°F on Saturday and a scorching 84°F on Sunday.
Some models suggest an even bigger spike next week, with potential highs near 90°F by the end of February, an extremely rare event for this time of year.
What’s Causing This Sudden Heatwave?
A large and persistent high-pressure system over the Southwest is trapping warm air over the region, creating a prolonged period of above-average temperatures. This pattern is common in the summer months but unusual for February.
Climate experts say this could be a sign of an early and intense warm season, especially if this high-pressure system continues to dominate into March and April.
While some Phoenix residents may welcome the early warmth, others worry about what this means for water resources and fire season later in the year.
How Will This Heat Affect Phoenix?
A stretch of high temperatures like this in February isn’t just a weather anomaly—it has real impacts on the city and its residents.
- Increased Energy Usage – As temperatures rise, air conditioners will be working overtime, leading to higher electricity demand and potential stress on the power grid.
- Health Risks – Rapid temperature swings can be tough on the body, especially for young children, the elderly, and those with preexisting conditions. Dehydration and heat exhaustion can still occur even in winter.
- Environmental Effects – Extended warmth this early in the year could accelerate early plant blooming, increase pollen counts, and dry out vegetation faster, leading to higher wildfire risks later in the season.
How to Stay Safe and Beat the Heat
Even though this isn’t summer, it’s important to take heat precautions as Phoenix experiences above-normal temperatures.
- Stay Hydrated – The dry desert heat can cause dehydration faster than you think. Carry a refillable water bottle and drink plenty of fluids.
- Use Sun Protection – Even in February, the sun is intense. Wear sunscreen, sunglasses, and lightweight clothing to avoid sunburn.
- Limit Outdoor Activity During Peak Heat – If you exercise or work outside, try to do it in the morning or evening when temperatures are lower.
- Conserve Energy – With air conditioning use increasing, turn off unnecessary appliances and use fans to help keep cool without overloading the power grid.
Will Phoenix Get Any Relief from the Heat?
Unfortunately, this heatwave is expected to persist for the next 10 to 14 days with no major cold fronts in sight. Some meteorologists predict the warmth could stretch into March, meaning an early start to Phoenix’s already long warm season.
This February heatwave is a sign of what’s to come, and if temperatures are this high this early, it raises serious questions about what summer in the Valley of the Sun could look like.
