Tag Archives: Winter

Climatology 101: Anatomy of Ajo’s wettest October

While the Old Pueblo recorded its 5th wettest October, a town in western Pima County obliterated a record.

Continue reading Climatology 101: Anatomy of Ajo’s wettest October


Wednesday’s Tucson Forecast: Low elevation snow occurring this morning

As expected, low elevation snow developed this morning.

The 4WARN Weather team confirms 1-2″ of snow on the ground early this morning in Oracle. Mount Lemmon has received 6″ snow early this morning, based on webcams around Summerhaven.

Snow levels will continue to crash down to 3,500 feet through the morning hours, with flurries possible for Vail, Corona de Tucson & the upper reaches of the Catalina Foothills. Any snowfall accumulation stays above the 4,000 foot mark.

A Winter Weather Advisory continues through 11 AM for areas above 4,500 feet. 1-2″ snow is possible for places like Oracle, Sierra Vista, Sonoita and Tombstone. Snow totals atop Mount Lemmon may approach 5-9″ through lunchtime.

Metro Tucson can expect a 70% chance of showers through 11 AM, followed by clearing skies. Highs today peak in the mid 50s, running about 15° below average. Overnight lows likely drop at or below the freezing mark outside of Tucson city limits.

A warming trend commences Thursday as high pressure regains control of the weather pattern. Highs range from the low 70s Thursday to the mid 70s Friday and Saturday. Early next week features highs in the upper 60s to mid 70s.

Tuesday’s Tucson Forecast: Winter Weather Advisory starts tonight

Low elevation snow remains in the forecast for the Sonoran Desert.

A strong cold front sweeps across Arizona over the next 24 hours. This afternoon features gusty southwest winds up to 30 MPH and patchy blowing dust. Highs peak in the low 70s for the Old Pueblo.

Scattered showers develop late this afternoon in western Pima County, becoming widespread over Metro Tucson late tonight. Showers and snow down to 3,500 feet continue through Wednesday morning. Snow flurries are possible by daybreak Wednesday for places like Vail, Corona de Tucson, upper reaches of the Catalina Foothills, Benson and SaddleBrooke.

A Winter Weather Advisory is in effect for areas above 4,500 feet from 11 PM today until 11 AM Wednesday. This includes the cities of Oracle, Sonoita, Bisbee, Sierra Vista and many foothill locations in Santa Cruz & Cochise Counties. These places could pick up 1-2″ snow, while Mount Lemmon is in line for 5-9″ of new snowfall.

Valley rainfall totals should be in the 0.10-0.30″ range between late tonight and tomorrow morning.

Daytime highs Wednesday only reach the mid 50s, followed by freezing temperatures outside of Tucson city limits Thursday morning. A warming trend starts Thursday afternoon and continues through the weekend.

Monday’s Tucson Forecast: How low will snow levels go this week?

A cold storm system is set to strike over the next 48 hours.

This afternoon marks the calm before the cold front. Highs today peak in the low 70s, running a few degrees above average. Cloud cover begins to increase overnight as lows bottom out in the low 40s.

Tuesday features gusty southwest winds around 15-25 MPH. The cold front enters the western deserts late tomorrow afternoon, leading to scattered showers for places like Ajo and Sells. Metro Tucson stands a 60% chance of showers starting late Tuesday night & lingering through Wednesday morning.

Snow levels by Wednesday morning crash as low as 3,500 feet, meaning snowflakes are possible for places like Vail, SaddleBrooke and Benson. 1-2″ snow is possible for locales around 4,000 feet, including Oracle, Sierra Vista and Patagonia. Mount Lemmon is in line for 4-7″ snow through Wednesday morning.

Up to 0.30″ rain is possible for valley floors.

Highs behind the front only reach the mid 50s Wednesday, followed by lows in the low to mid 30s. A strong warming trend starts Thursday.

Friday’s Tucson Forecast: Unsettled end to February

Today’s cold front won’t produce any valley rain or mountain snow. Next week’s system could be a different story.

Westerly winds peak in the 15-25 MPH range this afternoon & evening. Highs reach the low 60s this afternoon, followed by overnight lows in the low to mid 30s. Areas outside of Tucson city limits are at risk for a brief freeze early Saturday morning.

Click here for tips & tricks to prepare for freezing temperatures.

The weekend remains on the cool side. Sunny skies are on tap with highs in the upper 50s to low 60s. Overnight lows Saturday once again bottom out in the low to mid 30s.

Monday features a warm up as daytime temps trend toward the low 70s. The 70s won’t stick around long, thanks to a potential cold front blasting toward the state. Clouds and winds increase Tuesday afternoon, followed by a 40% chance of valley rain & mountain snow late Tuesday night into early Wednesday. Exact rain & snow totals remain unclear this far out.

Highs Wednesday struggle to reach the low 60s, which is about 10° below normal for late February.

Wednesday’s Tucson Forecast: Mother Nature’s keeping it cool

Below normal temperatures are locked in for the rest of the week.

Two storm systems swing through the state over the next 60 hours. The first system provides partly cloudy skies this afternoon and highs in the low 60s. Skies clear out overnight as lows bottom out in the mid to upper 30s across Metro Tucson.

Storm system #2 knocks on the door Friday. This feature cranks up westerly winds to the 15-25 MPH range and keeps highs temperatures in the upper 50s. Overnight lows Friday drop to the low to mid 30s in eastern Pima County. Outlying areas of Metro Tucson may drop briefly to the freezing mark by daybreak Saturday.

Isolated showers may develop late Friday across Graham and Greenlee Counties.

After highs peak in the upper 50s to low 60s this weekend, a warming trend commences. Temperatures for the start of the new work week hover around the 70° mark, which is typical for late February.

Monday’s Tucson Forecast: Cold front queued up

A quick hitting cold front sweeps through the state over the next 24 hours.

Gusty southwest winds develop during the afternoon hours. Metro Tucson can expect gusts to 30 MPH through this evening. An isolated shower can’t be ruled out this afternoon in the Old Pueblo as highs peak in the mid 60s.

Wind gusts to 40 MPH are possible across Cochise, Graham and Greenlee Counties today. For that reason, these areas are under a Wind Advisory today from noon until 11 PM. Recent rainfall likely knocks down any potential for blowing dust.

There is a 30% chance of showers in the Old Pueblo starting early this evening. Snow levels bottom out around 5,000 feet with a Winter Weather Advisory in effect for the Catalinas, Mt. Graham and White Mountains. 

Mount Lemmon may receive 2-4″ snow tonight, while up to 6″ snow is possible atop Mt. Graham and the White Mountains. 

Partly cloudy skies prevail tomorrow as high temps struggle to reach the mid 50s. Freezing temperatures are possible across portions of Metro Tucson tomorrow night into early Wednesday morning.

Models hint at another storm system late in the work week, bringing gusty winds and isolated showers on Friday.