However there were isolated spots that recorded up to a three-quarters of an inch /0.75'/. Rainfall amounts across the metro area, using several sources like, the Pima County Regional Flood Control District gages and CoCoRaHS, were mostly below a third of an inch /0.33'/. This is the 3rd straight January in which the monthly low temperature, recorded at the airport, was NOT colder than 30°. Temperature extremes for the month ranged from a high of 77° on the 7th to a low of 31° on the 2nd. The monthly average temperature of 54.3° is seven-tenths of a degree above normal and ranks as the 17th warmest January on record. The airport recorded a gust of 46 mph which is the 3rd highest wind gust recorded in January in the past 50 years. The most notable day was on the 28th where wind gusts ranged from 20 to 40 mph with localized spots recording gusts between 45 and 55 mph. A few of those dry systems did bring very gusty east winds to the area. Rainfall totals across the area for both events were mostly less than a tenth of an inch. Only two systems, one on the 18th and the other late on the 22nd into the 23rd, brought mostly light precipitation to the area. High temperatures for the remainder of the month were on a roller-coaster ride ranging between 64° & 77° as a handful of weather systems moved through the state. And for only the 9th time since 1895, rainfall was recorded on both New Year's Eve & Day with the most recent being in 2018-19 & 2016-17.Ī colder air mass was in place on the morning of the 2nd with low temperatures across the metro area ranging from the mid 20's to the lower 30's. The airport two-day total of 0.74' ranks as the 3rd wettest New Year's Eve/Day on record. The combined two-day rainfall totals for New Year's Eve/Day across the metro area ranged from 0.50' to 1.50' with the bulk of the rain occurring on New Year's Eve. The new year began on a wet note when a winter storm impacted the area as the calendar turned from 2021 to 2022. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.3rd highest wind gust for January recorded at the airport in the past 50 years Try to limit direct exposure during these hours. UV radiation from the sun is at its strongest between 10 a.m. Solar protection is of utmost significance. Note: An average UV index of 7 in May transforms into this advice:

A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person. UV indexThe average daily maximum UV index in May in Tucson, Arizona, is 7. SunshineIn May, the average sunshine is 12h. On the last day of the month, sunrise is at 5:18 am and sunset at 7:24 pm MST. On the first day of May in Tucson, sunrise is at 5:37 am and sunset at 7:04 pm. DaylightIn Tucson, Arizona, the average length of the day in May is 13h and 49min. SnowfallIn Tucson, snow does not fall in February through December. Rain falls for 1.3 days and accumulates 0.08' of precipitation. RainfallMay is the month with the least rainfall in Tucson. HumidityIn Tucson, Arizona, the average relative humidity in May is 21%. Throughout May, Tucson registers a distinct decrease from daytime highs, reaching an average low of 60.4☏. TemperatureMay in Tucson signals a minor shift in the average high-temperature, moving from April's 78.3☏ to a still moderately hot 85.5☏. The temperature swings exorbitantly from the daytime high of 85.5☏ down to 60.4☏ during the cooler nights.

As May segues into June, residents commence their summer routines in earnest, particularly in the evenings when intense heat yields to cooler temperatures.

Despite the warmth, humidity levels drop, causing dry conditions and increasing the risk of wildfires. This period is characterized by longer, hotter days and a steep increase in temperature from the preceding month of April. May signifies the onset of the pre-summer heat wave in Tucson.

Tucson weather by month