FPUS55 KTWC 210639 ZFPTWC Zone Forecast Product for Southeast Arizona National Weather Service Tucson AZ 1138 PM MST Wed May 20 2026 AZZ501-211400- Western Pima County- Including Ajo and Organ Pipe Cactus N.M. 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Clear. Lows 59 to 64. .THURSDAY...Sunny. Highs 91 to 96. .THURSDAY NIGHT...Clear. Lows 61 to 66. .FRIDAY...Sunny. Highs 91 to 96. .FRIDAY NIGHT...Clear. Lows 62 to 67. .SATURDAY...Sunny. Highs 92 to 97. .SATURDAY NIGHT...Clear. Lows 63 to 68. .SUNDAY...Sunny. Highs 95 to 100. .SUNDAY NIGHT THROUGH WEDNESDAY...Clear. Lows 60 to 69. Highs 87 to 98. $$ AZZ502-211400- Tohono O'odham Nation- Including Sells 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Clear. Lows 57 to 63. .THURSDAY...Sunny. Highs 88 to 93. .THURSDAY NIGHT...Clear. Lows 59 to 65. .FRIDAY...Sunny. Highs 89 to 94. .FRIDAY NIGHT...Clear. Lows 60 to 66. .SATURDAY...Sunny. Highs 90 to 95. .SATURDAY NIGHT...Clear. Lows 61 to 67. .SUNDAY...Sunny. Highs 93 to 98. .SUNDAY NIGHT...Clear. Lows 62 to 68. .MEMORIAL DAY...Mostly sunny. Highs 92 to 97. .MONDAY NIGHT THROUGH WEDNESDAY...Clear. Lows 59 to 65. Highs 87 to 93. $$ AZZ503-211400- Upper Santa Cruz River Valley/Altar Valley- Including Nogales 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly clear. Lows 50 to 56. .THURSDAY...Sunny. Highs 82 to 88. .THURSDAY NIGHT...Clear. Lows 52 to 58. .FRIDAY...Sunny. Highs 83 to 89. .FRIDAY NIGHT...Clear. Lows 52 to 58. .SATURDAY...Sunny. Highs 84 to 90. .SATURDAY NIGHT...Clear. Lows 53 to 59. .SUNDAY...Sunny. Highs 88 to 94. .SUNDAY NIGHT AND MEMORIAL DAY...Mostly clear. Lows 55 to 61. Highs 87 to 93. .MONDAY NIGHT THROUGH WEDNESDAY...Breezy, clear. Lows 51 to 58. Highs 83 to 90. $$ AZZ504-211400- Tucson Metro Area- Including Tucson, Green Valley, Marana, and Vail 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly clear. Lows 56 to 62. South wind around 10 mph. .THURSDAY...Sunny. Highs 86 to 92. South wind around 10 mph becoming west in the afternoon. .THURSDAY NIGHT...Clear. Lows 58 to 64. West wind 5 to 15 mph becoming south around 10 mph after midnight. .FRIDAY...Sunny. Highs 87 to 93. South wind around 10 mph becoming southwest in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 59 to 65. Southwest wind 5 to 15 mph. .SATURDAY...Sunny. Highs 88 to 94. .SATURDAY NIGHT...Clear. Lows 60 to 66. .SUNDAY...Sunny. Highs 91 to 97. .SUNDAY NIGHT THROUGH MONDAY NIGHT...Mostly clear. Lows 58 to 68. Highs 91 to 97. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 88 to 94. Lows 57 to 63. $$ AZZ505-211400- South Central Pinal County- Including Picacho Peak State Park 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly clear. Lows 56 to 62. .THURSDAY...Sunny. Highs 87 to 92. .THURSDAY NIGHT...Clear. Lows 59 to 64. .FRIDAY...Sunny. Highs 89 to 94. .FRIDAY NIGHT...Clear. Lows 61 to 66. .SATURDAY...Sunny. Highs 90 to 95. .SATURDAY NIGHT...Clear. Lows 63 to 68. .SUNDAY...Sunny. Highs 92 to 97. .SUNDAY NIGHT...Clear. Lows 65 to 70. .MEMORIAL DAY AND MONDAY NIGHT...Mostly clear. Highs 92 to 97. Lows 61 to 66. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 90 to 95. Lows 59 to 64. $$ AZZ506-211400- Southeast Pinal County- Including Mammoth and Oracle 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly clear. Lows 57 to 62. .THURSDAY...Sunny. Highs 85 to 91. .THURSDAY NIGHT...Clear. Lows 58 to 63. .FRIDAY...Sunny. Highs 86 to 92. .FRIDAY NIGHT...Mostly clear. Lows 60 to 65. .SATURDAY...Sunny. Highs 87 to 93. .SATURDAY NIGHT...Clear. Lows 61 to 66. .SUNDAY...Sunny. Highs 90 to 96. .SUNDAY NIGHT...Mostly clear. Lows 63 to 68. .MEMORIAL DAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 89 to 95. .MONDAY NIGHT...Mostly clear. Lows 59 to 64. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 87 to 93. Lows 58 to 63. $$ AZZ507-211400- Upper San Pedro River Valley- Including Sierra Vista and Benson 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 50 to 56. .THURSDAY...Mostly sunny. Highs 82 to 87. .THURSDAY NIGHT...Clear. Lows 51 to 57. .FRIDAY...Sunny. Highs 82 to 88. .FRIDAY NIGHT...Mostly clear. Lows 52 to 58. .SATURDAY...Sunny. Highs 83 to 89. .SATURDAY NIGHT...Clear. Lows 53 to 59. .SUNDAY...Sunny. Highs 86 to 92. .SUNDAY NIGHT...Mostly clear. Lows 57 to 62. .MEMORIAL DAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 86 to 91. .MONDAY NIGHT...Mostly clear. Lows 52 to 58. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 83 to 89. Lows 50 to 56. $$ AZZ508-211400- Eastern Cochise County below 5000 feet- Including Willcox and Douglas 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly cloudy. Lows 51 to 57. .THURSDAY...Partly cloudy in the morning then clearing. Highs 83 to 88. .THURSDAY NIGHT...Clear. Lows 52 to 58. .FRIDAY...Sunny. Highs 83 to 88. .FRIDAY NIGHT...Mostly clear. Lows 53 to 59. .SATURDAY...Sunny. Highs 84 to 89. .SATURDAY NIGHT...Mostly clear. Lows 53 to 59. .SUNDAY...Sunny. Highs 88 to 93. .SUNDAY NIGHT...Mostly clear. Lows 57 to 62. .MEMORIAL DAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 87 to 92. .MONDAY NIGHT...Mostly clear. Lows 52 to 58. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 84 to 90. Lows 51 to 57. $$ AZZ509-211400- Upper Gila River Valley- Including Clifton and Safford 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 54 to 60. .THURSDAY...Mostly sunny. Highs 82 to 90. .THURSDAY NIGHT...Clear. Lows 54 to 60. .FRIDAY...Sunny. Highs 83 to 91. .FRIDAY NIGHT...Mostly clear. Lows 56 to 62. .SATURDAY...Sunny. Highs 84 to 92. .SATURDAY NIGHT...Clear. Lows 57 to 63. .SUNDAY...Sunny. Highs 88 to 96. .SUNDAY NIGHT...Mostly clear. Lows 59 to 65. .MEMORIAL DAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Highs 86 to 94. Chance of precipitation 30 percent. .MONDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 56 to 62. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 84 to 92. Lows 54 to 60. $$ AZZ510-211400- White Mountains of Graham and Greenlee Counties- Including Hannagan Meadow 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 43 to 55. .THURSDAY...Mostly sunny. Highs 70 to 80. .THURSDAY NIGHT...Mostly clear. Lows 44 to 56. .FRIDAY...Sunny. Highs 72 to 82. .FRIDAY NIGHT...Mostly clear. Lows 45 to 57. .SATURDAY...Mostly sunny. Highs 73 to 83. .SATURDAY NIGHT...Clear. Lows 47 to 59. .SUNDAY...Sunny. Highs 76 to 86. .SUNDAY NIGHT...Mostly clear. Lows 49 to 61. .MEMORIAL DAY AND MONDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Highs 74 to 84. Lows 46 to 58. Chance of precipitation 30 percent. .TUESDAY...Mostly sunny. Highs 72 to 82. .TUESDAY NIGHT AND WEDNESDAY...Clear. Lows 43 to 55. Highs 73 to 83. $$ AZZ511-211400- Galiuro and Pinaleno Mountains- Including Mount Graham 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 51 to 57. .THURSDAY...Mostly sunny. Highs 70 to 80. .THURSDAY NIGHT...Clear. Lows 51 to 57. .FRIDAY...Sunny. Highs 71 to 81. .FRIDAY NIGHT...Mostly clear. Lows 53 to 59. .SATURDAY...Sunny. Highs 73 to 83. .SATURDAY NIGHT...Clear. Lows 54 to 60. .SUNDAY...Sunny. Highs 76 to 86. .SUNDAY NIGHT...Mostly clear. Lows 56 to 62. .MEMORIAL DAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Highs 75 to 85. Chance of precipitation 30 percent. .MONDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 52 to 58. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 73 to 84. Lows 51 to 57. $$ AZZ512-211400- Chiricahua Mountains- Including Chiricahua N.M. 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly cloudy. Lows 50 to 56. .THURSDAY...Partly cloudy in the morning then clearing. Highs 73 to 81. .THURSDAY NIGHT...Clear. Lows 50 to 56. .FRIDAY...Sunny. Highs 73 to 81. .FRIDAY NIGHT...Mostly clear. Lows 50 to 58. .SATURDAY...Sunny. Highs 74 to 82. .SATURDAY NIGHT...Mostly clear. Lows 51 to 59. .SUNDAY...Sunny. Highs 78 to 86. .SUNDAY NIGHT...Mostly clear. Lows 54 to 60. .MEMORIAL DAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Highs 78 to 86. Chance of precipitation 30 percent. .MONDAY NIGHT...Partly cloudy. Lows 51 to 57. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 76 to 84. Lows 49 to 55. $$ AZZ513-211400- Dragoon and Mule and Huachuca and Santa Rita Mountains- Including Bisbee, Canelo Hills, and Madera Canyon 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 49 to 55. .THURSDAY...Mostly sunny. Highs 76 to 82. .THURSDAY NIGHT...Clear. Lows 51 to 57. .FRIDAY...Sunny. Highs 76 to 82. .FRIDAY NIGHT...Clear. Lows 51 to 57. .SATURDAY...Sunny. Highs 77 to 83. .SATURDAY NIGHT...Mostly clear. Lows 53 to 59. .SUNDAY...Sunny. Highs 80 to 88. .SUNDAY NIGHT...Mostly clear. Lows 55 to 61. .MEMORIAL DAY...Mostly sunny with a 10 percent chance of showers and thunderstorms. Highs 81 to 87. .MONDAY NIGHT...Mostly clear. Lows 51 to 56. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 78 to 84. Lows 50 to 55. $$ AZZ514-211400- Catalina and Rincon Mountains- Including Mount Lemmon and Summerhaven 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly clear. Lows 51 to 57. .THURSDAY...Sunny. Highs 69 to 81. .THURSDAY NIGHT...Clear. Lows 52 to 58. .FRIDAY...Sunny. Highs 70 to 82. .FRIDAY NIGHT...Mostly clear. Lows 53 to 59. .SATURDAY...Sunny. Highs 71 to 83. .SATURDAY NIGHT...Clear. Lows 54 to 60. .SUNDAY...Sunny. Highs 73 to 85. .SUNDAY NIGHT...Partly cloudy. Lows 57 to 63. .MEMORIAL DAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 75 to 87. .MONDAY NIGHT...Mostly clear. Lows 53 to 59. .TUESDAY THROUGH WEDNESDAY...Clear. Highs 73 to 85. Lows 51 to 57. $$ AZZ515-211400- Baboquivari Mountains- Including Kitt Peak 1138 PM MST Wed May 20 2026 .REST OF TONIGHT...Mostly clear. Lows 54 to 59. .THURSDAY...Sunny. Highs 77 to 83. .THURSDAY NIGHT...Clear. Lows 56 to 61. .FRIDAY...Sunny. Highs 78 to 84. .FRIDAY NIGHT...Clear. Lows 56 to 61. .SATURDAY...Sunny. Highs 79 to 85. .SATURDAY NIGHT...Clear. Lows 57 to 62. .SUNDAY...Sunny. Highs 82 to 88. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 59 to 64. Highs 82 to 88. .MONDAY NIGHT THROUGH WEDNESDAY...Breezy, clear. Lows 55 to 61. Highs 79 to 85. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson