Above indicates the forecasted high in orange (with error bar denoting the range of ensemble forecast members), average high for this time of year in orange (dashed line), forecasted low in blue (with error bar), average low this time of year in blue (dashed line), and forecasted wind speed in purple. Note that the wind speed forecast is sustained wind (not gusts), and it is based on only one model (not an ensemble).
Update: The second of three back-to-back disturbances moving through Arizona this weekend will be stronger and colder than originally anticipated. It will dig south over the ocean and bring a cold airmass behind it. Forecasts are now indicating rain showers on Sunday changing to snow showers Sunday night to Monday morning. Expect accumulating wet snow for the Prescott area (above 4,500’ elevation), and possibly packed snow or ice on the roads on Monday morning. There is still considerable uncertainty in the weekend forecasts…but please stay tuned for up-to-date forecasts at http://weather.gov.
Met Mail is an unofficial weather discussion and forecast transmitted once or twice a week via e-mail by the Embry-Riddle Department of Meteorology (http://meteo.pr.erau.edu/). Embry-Riddle offers an undergraduate bachelor-of-science degree program in Applied Meteorology. Please spread the word to all potential qualified candidates!
ERAU Applied Meteorology degree program
Official National Weather Service forecast