Expires:202512221400;;990558 FPUS55 KTWC 212114 ZFPTWC Zone Forecast Product for Southeast Arizona National Weather Service Tucson AZ 213 PM MST Sun Dec 21 2025 AZZ503-221400- Upper Santa Cruz River Valley/Altar Valley- Including Nogales 214 PM MST Sun Dec 21 2025 .TONIGHT...Mostly clear. Lows 44 to 52. .MONDAY...Mostly sunny. Highs 79 to 84. .MONDAY NIGHT...Partly cloudy. Lows 46 to 54. .TUESDAY...Mostly cloudy. Highs 74 to 79. .TUESDAY NIGHT...Cloudy with a 40 percent chance of showers. Lows 50 to 56. .WEDNESDAY...Mostly cloudy with a 20 percent chance of showers. Highs 69 to 74. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of showers. Lows 48 to 54. .CHRISTMAS DAY...Mostly cloudy with a 40 percent chance of showers. Highs 70 to 75. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows 46 to 52. .FRIDAY AND FRIDAY NIGHT...Mostly cloudy with a 10 percent chance of showers. Highs 67 to 72. Lows 42 to 48. .SATURDAY...Mostly cloudy. Highs 64 to 69. .SATURDAY NIGHT...Mostly cloudy with a 10 percent chance of showers. Lows 40 to 46. .SUNDAY...Mostly cloudy with a 20 percent chance of showers. Highs 64 to 69. $$