The University of Arizona

Monsoon 2020 | CLIMAS

 SW Climate Outlook

Monsoon 2020

Monsoon 2020: Well Below Average or Historically Dry?

Monsoon precipitation for Arizona and New Mexico is generally below average (Fig. 1). Precipitation to date at stations (Fig. 2) and maps of percent of days with rain (Fig. 3), both illustrate features of a relatively dry monsoon. There is not much time left, and little rain on the forecast horizon, so the rest of September will determine just how dry the 2020 monsoon turns out to be.

Online Resources

  • Figures 1,3 - UArizona Climate Science Applications Program -  data: PRISM Climate Group
  • Figure 2 - CLIMAS: Climate Assessment for the Southwest - - data: RCC-ACIS