Cool
Average highs are around 18°C, so pack for cooler days.
December verdict
Altar Valley, United States in December
Weather score44Mixed
Mixed for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 7.6h per day, enough for a balanced month. Rainfall averages 40mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
18°C
Rain
40mm
Sun
7.6h
Weather score
44
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 40mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.6h per day, enough for a balanced month.
Map
Weather map
Compare Altar Valley, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December18°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December40mm average rain
December sits near Altar Valley's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to June and October to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December7.6 hours average sun
December is one of Altar Valley's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to June
This stretch has the strongest sunshine in the monthly averages.
Weather score
December44 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsMay to June and September
These months have the strongest weather score in the monthly averages.
Hotels near Altar Valley, United States
Marriott
JW Marriott Tucson Starr Pass Resort & SpaTucson, Arizona, USA
Four Points by Sheraton Tucson AirportTucson, Arizona, USA
Courtyard Tucson AirportTucson, Arizona, USA
Residence Inn Tucson AirportTucson, Arizona, USA
TownePlace Suites by Marriott Tucson AirportTucson, Arizona, USA
SpringHill Suites by Marriott Tucson at The BridgesTucson, Arizona, USA