NWS Phoenix

Want to learn more about severe weather and become an official NWS Spotter? This spring will be offering both in-person and virtual classes. Visit this website to register: weather.gov/psr/skywarn.ht…. We hope to see you there! #azwx #cawx

Daily record highs were smashed today with readings an incredible 25°F above the daily normals. Not only were these daily record highs for March 19th, but also the warmest temperatures recorded in March for the period of record for these 3 major climate sites. #azwx #cawx

Pets need protection from the heat too. Much like us, water, and frequent breaks in the shade will help keep everyone happy and healthy, but it's best to limit time outdoors if possible. Always look before you look, never leave your pets in a parked car! #azwx #cawx

To protect hikers and first responders, these trails will be restricted from 8 a.m. to 5 p.m. during the @NWSPhoenix Extreme Heat Warning period from March 19 - March 22: Camelback Mountain – Echo Canyon and Cholla Trail Phoenix Mountains Preserve – Piestewa Peak Summit Trail and associated trails South Mountain Park and Preserve – Holbert Trail, Mormon Trail, Hau’pal Loop Trails, and access to the National Trail from the Pima Canyon Trailhead

The Extreme Heat Warning is in effect for Southeastern California and now includes Southern Arizona. The Extreme Heat Warning will go through Sunday, March 22nd. #azwx #cawx

The early season western #heatwave is well under way. Here are monthly high temperature records for March set over the past two days. Future daily temperature records can be found here: wpc.ncep.noaa.gov/exper/ndfd/ndf…

If work takes you outside during the heat, drink a cup of cool water every 20 minutes, even if you aren’t thirsty. For long jobs, drink a beverage with electrolytes. Find a shady spot to take frequent breaks in. If possible, spend some time in the AC. #azwx #cawx

This morning at Phoenix, and El Centro new record warm lows were set, beating the previous set records by 2-5 degrees. Yuma was still quite warm this morning but was 2 degrees shy of tying the previous record for the day. Extreme Heat Warning still in effect. #azwx #cawx

Record heat continues across the Desert Southwest. Highs will top out at around 105°F today, or around 25°F above normal. For some perspective, the average first 105° day of the year normally occurs on May 22nd. Please practice good heat safety! #azwx #cawx

Triple-digit afternoon highs were observed across most of the lower desert communities. Phoenix, Yuma, and El Centro set new daily and monthly March temperature records. Temperatures are expected to climb further during the next couple of days, approaching 105°F. #azwx #cawx

Sky Harbor Airport reached 101° at 2:59 pm MST. This sets a new record high temperature for the month of March. Stay tuned for the official high temperature post. #azwx

As of 2:57 pm MST Phoenix Sky Harbor Airport has reached 100°. This is not only the first 100° day of 2026, but it is also the earliest occurrence of 100° in Phoenix (which last occurred on March 26, 1988). #azwx

☀️Early season heat affects everyone, especially visitors to the area & those not acclimated to the heat. Remember to hydrate, never lock children or pets in cars, & stay indoors w/AC during the hottest time of day. For more heat resources go to: pima.gov/heat #azwx

An extreme early-season heat wave could see temperatures 20-30 degrees above average and record temperatures broken by 10 or more degrees today and tomorrow across the Desert Southwest. Jumping right into summer-like heat puts vulnerable populations at risk. Stay cool and check out weather.gov/safety/heat

The heat can impact everybody differently. Monitor others exercising or playing sports, and ensure frequent breaks. Bring water to outdoor activities to keep everyone hydrated. Never leave anyone (or pets) alone in a locked car. #azwx #cawx

Here's a look at some of this morning's low temperatures from around the area. Both Phoenix and El Centro set new record warm low temperatures again today. Temperatures will quickly warm into the low 100s this afternoon, make sure to practice smart heat safety. #azwx #cawx

Morning lows will be relatively mild, but don't let these cooler temperatures fool you. Temps will quickly warm into the 80s mid morning then 90s late morning, followed by triple digit highs this afternoon. Plan ahead & stay hydrated if you spend time outdoors! #azwx #cawx

Afternoon high temperatures ranged between the mid to upper 90s across the region, which is a good 15-20 degrees above average. Most of the lower desert communities are forecast to reach the triple digits for the first time this year on Wednesday. #azwx #cawx

Some 100s are great. But 100°+ temps in March? Not so much. Goodyear is under an EXTREME HEAT WATCH from Wed morning through Sun evening. Stay hydrated and limit time outdoors during peak heat. ☀️ #GoodyearAZ #CityOfGoodyear #wx @NWS @NWSPhoenix

This week’s heat from the West Coast to the Plains will set hundreds of daily records—many by several degrees. Some areas may even set March records, with temperatures more typical of June. Learn how to stay safe: weather.gov/heat

🍀Happy St. Patrick's Day. Low temperatures this morning were were well above normal and were mainly in the 60s across the lower deserts. Both Phoenix Sky Harbor and El Centro set new record warm lows for today's date. #azwx #cawx