Area Forecast Discussion
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
883 FXUS65 KTWC 250950 AFDTWC Area Forecast Discussion National Weather Service Tucson AZ 250 AM MST Tue Nov 25 2025 .SYNOPSIS...Warmer today with warming trend continuing to Friday before cooler than normal temperatures return to the area Sunday and Monday. Dry conditions through Saturday before a weather system potentially brings another chance of valley rain and mountain snow Sunday and Monday. && .DISCUSSION...Observations over the past several hours have shown isolate areas of patchy fog with visibilities in the 2 to 5 mile range. Satellite was showing some isolated dense fog areas across western Cochise county. I don`t think dense fog coverage will be as extensive as it was yesterday morning, but will continue to monitor satellite and observational trends in case areal coverage of dense fog increases. Otherwise dry northwest flow over the area today with high pressure ridge west of the area. High temperatures today will run 4 to 8 degrees warmer than yesterday. Warmer temperatures Wednesday through Friday before cooling to well below normal temperatures return to the area Sunday into Monday, thanks to a weather system potentially bringing another round of valley rain and mountain snow to the area. && .AVIATION...Valid through 26/12Z. Isold MVFR and IFR VSBY psbl due to fog thru 25/16z. Chances are low for fog to impact TAF sites thus fog were not included in 12z TAFs. Otrw SKC. SFC winds terrain and diurnally driven less than 8 kts. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Dry conditions through Saturday, then a weather system will bring a chance of valley rain and mountain snow Sunday and Monday. Near normal high temperatures today, then up to 5 degrees above normal Wednesday through Saturday before cooling to much below normal values Sunday and Monday. Min RH will be 30-50 percent today, dropping to 20-30 percent through Saturday, before rising to 30-50 percent Sunday and Monday. 20-foot winds follow normal diurnal trends with speeds 5 to 10 mph and occasional afternoon gusts through Saturday then breezy 15 to 25 mph Sunday and Monday. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson