634
FPUS55 KBOI 190831
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
230 AM MDT TUE MAY 19 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND WEDNESDAY.
IDZ011-191600-
WEST CENTRAL MOUNTAINS-
230 AM MDT TUE MAY 19 2026
TODAY
PATCHY FOG THIS MORNING. MOSTLY SUNNY. HIGHS 51 TO 66.
TONIGHT
PARTLY CLOUDY. LOWS 33 TO 43.
WEDNESDAY
PARTLY SUNNY. HIGHS 54 TO 68.
WEDNESDAY NIGHT
DECREASING CLOUDS. AREAS OF FOG AFTER
MIDNIGHT. LOWS 33 TO 43.
THURSDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 57 TO 71.
THURSDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG AFTER MIDNIGHT.
LOWS 35 TO 46.
FRIDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 61 TO 76.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLEAR. LOWS 38 TO 48. HIGHS
65 TO 79.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 49.
SUNDAY
SUNNY. HIGHS 65 TO 80.
SUNDAY NIGHT AND MEMORIAL DAY
PARTLY CLOUDY. LOWS 41 TO 51.
HIGHS 61 TO 75.
TEMPERATURE
MCCALL 60 34 62
=
IDZ013-191600-
BOISE MOUNTAINS-
230 AM MDT TUE MAY 19 2026
TODAY
SUNNY. HIGHS 53 TO 67.
TONIGHT
PARTLY CLOUDY. LOWS 28 TO 43.
WEDNESDAY
PARTLY SUNNY. HIGHS 57 TO 71.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 29 TO 44.
THURSDAY
SUNNY. HIGHS 59 TO 74.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 31 TO 46.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 67 TO 82. LOWS
34 TO 49.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 36 TO 51.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. HIGHS 69 TO 84. LOWS
38 TO 53.
TEMPERATURE
IDAHO CITY 66 33 70
=
IDZ028-191600-
CAMAS PRAIRIE-
230 AM MDT TUE MAY 19 2026
TODAY
SUNNY. HIGHS 59 TO 64. LIGHT WINDS THIS MORNING,
BECOMING WEST 10 TO 15 MPH THIS AFTERNOON.
TONIGHT
DECREASING CLOUDS. LOWS 30 TO 35. WEST WINDS 10 TO
15 MPH. GUSTS TO 25 MPH IN THE EVENING.
WEDNESDAY
PARTLY SUNNY IN THE MORNING, THEN BECOMING MOSTLY
CLOUDY. HIGHS 63 TO 68. BREEZY. LIGHT WINDS IN THE MORNING,
BECOMING WEST 10 TO 20 MPH WITH GUSTS TO 30 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 33 TO 38. BREEZY.
NORTHWEST WINDS 10 TO 20 MPH. GUSTS TO 30 MPH IN THE EVENING.
THURSDAY
SUNNY. HIGHS 65 TO 70. LIGHT WINDS IN THE MORNING,
BECOMING WEST 10 TO 15 MPH IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 34 TO 39.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 70 TO 79. LOWS
36 TO 41.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 43. BREEZY.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. HIGHS 75 TO 81. LOWS
40 TO 45. WINDY.
TEMPERATURE
FAIRFIELD 62 30 66
=
IDZ033-191600-
UPPER WEISER RIVER-
230 AM MDT TUE MAY 19 2026
TODAY
SUNNY. HIGHS 65 TO 70. LIGHT WINDS.
TONIGHT
PARTLY CLOUDY. LOWS 42 TO 47. NORTH WINDS UP TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS 68 TO 73. LIGHT WINDS.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 43 TO 48. NORTH WINDS
10 TO 15 MPH WITH GUSTS TO 25 MPH.
THURSDAY
SUNNY. HIGHS 70 TO 76. NORTH WINDS AROUND 10 MPH WITH
GUSTS TO 20 MPH.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 44 TO 49.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 75 TO 85. LOWS
48 TO 53.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO 53.
SUNDAY
SUNNY. HIGHS 79 TO 85.
SUNDAY NIGHT AND MEMORIAL DAY
PARTLY CLOUDY. LOWS 50 TO 55.
HIGHS 75 TO 80.
TEMPERATURE
COUNCIL 69 43 72
CAMBRIDGE 70 43 73
=
ORZ064-191600-
OREGON LOWER TREASURE VALLEY-
230 AM MDT TUE MAY 19 2026 /130 AM PDT TUE MAY 19 2026/
TODAY
SUNNY. HIGHS 71 TO 76. LIGHT WINDS.
TONIGHT
PARTLY CLOUDY. LOWS 45 TO 50. NORTH WINDS UP TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS 74 TO 79. NORTHWEST WINDS UP TO
10 MPH.
WEDNESDAY NIGHT
INCREASING CLOUDS. LOWS 47 TO 52. NORTH WINDS
10 TO 15 MPH WITH GUSTS TO 30 MPH.
THURSDAY
SUNNY. HIGHS 75 TO 80. NORTH WINDS AROUND 10 MPH WITH
GUSTS TO 20 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO 53.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 79 TO 89. LOWS
50 TO 55.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 52 TO 57.
SUNDAY
SUNNY. HIGHS 84 TO 89.
SUNDAY NIGHT AND MEMORIAL DAY
PARTLY CLOUDY. LOWS 53 TO 58.
HIGHS 80 TO 85.
TEMPERATURE
ONTARIO 74 46 77
=
IDZ012-191600-
LOWER TREASURE VALLEY-
230 AM MDT TUE MAY 19 2026
TODAY
SUNNY. HIGHS 69 TO 74. LIGHT WINDS.
TONIGHT
PARTLY CLOUDY. LOWS 43 TO 48. NORTH WINDS UP TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS 73 TO 78. NORTHWEST WINDS UP TO
10 MPH. GUSTS TO 20 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 51. NORTHWEST WINDS
10 TO 15 MPH.
THURSDAY
SUNNY. HIGHS 74 TO 79. NORTHWEST WINDS 10 TO 15 MPH
WITH GUSTS TO 25 MPH.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 46 TO 51.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 79 TO 89. LOWS
49 TO 54.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 51 TO 56.
SUNDAY
SUNNY. HIGHS 85 TO 90.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
52 TO 57.
MEMORIAL DAY
SUNNY. HIGHS 81 TO 86.
TEMPERATURE
CALDWELL 72 44 75
=
IDZ014-191600-
UPPER TREASURE VALLEY-
230 AM MDT TUE MAY 19 2026
TODAY
SUNNY. HIGHS 69 TO 74. NORTHWEST WINDS UP TO 10 MPH WITH
GUSTS TO 20 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 40 TO 46. NORTH WINDS 10 TO 15 MPH
IN THE EVENING, BECOMING LIGHT AFTER MIDNIGHT.
WEDNESDAY
PARTLY SUNNY. HIGHS 73 TO 78. LIGHT WINDS IN THE
MORNING, BECOMING NORTHWEST 10 TO 15 MPH WITH GUSTS TO 25 MPH IN
THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 43 TO 48. NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
THURSDAY
SUNNY. HIGHS 73 TO 78. BREEZY. NORTHWEST WINDS 10 TO
20 MPH WITH GUSTS TO 30 MPH.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 44 TO 49.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 79 TO 89. LOWS
45 TO 51.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 54.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. HIGHS 83 TO 91. LOWS
49 TO 55.
TEMPERATURE
BOISE 71 46 74
MOUNTAIN HOME 71 40 76
=
IDZ016-191600-
WESTERN MAGIC VALLEY-
230 AM MDT TUE MAY 19 2026
..FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM MDT TUESDAY
TODAY
SUNNY. HIGHS 65 TO 70. SOUTH WINDS AROUND 10 MPH THIS
MORNING, SHIFTING TO WEST THIS AFTERNOON.
TONIGHT
DECREASING CLOUDS. LOWS 37 TO 42. WEST WINDS 10 TO
15 MPH IN THE EVENING, SHIFTING TO SOUTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY SUNNY IN THE MORNING, THEN BECOMING MOSTLY
CLOUDY. HIGHS 69 TO 74. LIGHT WINDS IN THE MORNING, BECOMING WEST
10 TO 15 MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 41 TO 46. WEST WINDS
10 TO 15 MPH. GUSTS TO 25 MPH IN THE EVENING.
THURSDAY
SUNNY. HIGHS 69 TO 74. WEST WINDS 10 TO 15 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS
75 TO 80.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLEAR. LOWS 43 TO 49. HIGHS
81 TO 86.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 52.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. HIGHS 81 TO 88. LOWS
48 TO 53. BREEZY.
TEMPERATURE
JEROME 65 40 69
TWIN FALLS 65 41 71
=
IDZ029-191600-
OWYHEE MOUNTAINS-
230 AM MDT TUE MAY 19 2026
TODAY
MOSTLY SUNNY. HIGHS 61 TO 66.
TONIGHT
PARTLY CLOUDY. LOWS 38 TO 46.
WEDNESDAY
PARTLY SUNNY. HIGHS 65 TO 70.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 48.
THURSDAY
SUNNY. HIGHS 65 TO 70.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO 50.
FRIDAY AND FRIDAY NIGHT
MOSTLY CLEAR. HIGHS 71 TO 77. LOWS
44 TO 53.
SATURDAY
SUNNY. HIGHS 76 TO 81.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 56.
SUNDAY
SUNNY. HIGHS 78 TO 83.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 47 TO 56.
MEMORIAL DAY
SUNNY. HIGHS 74 TO 80.
=
IDZ015-191600-
SOUTHWEST HIGHLANDS-
230 AM MDT TUE MAY 19 2026
TODAY
MOSTLY SUNNY. HIGHS 60 TO 67.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
36 TO 41.
WEDNESDAY
PARTLY SUNNY. HIGHS 66 TO 73.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 39 TO 44.
THURSDAY
SUNNY. HIGHS 66 TO 73. BREEZY.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 44.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 74 TO 84. LOWS
43 TO 48.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 44 TO 51.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. HIGHS 79 TO 87. LOWS
45 TO 52.
=
IDZ030-191600-
SOUTHERN TWIN FALLS COUNTY-
230 AM MDT TUE MAY 19 2026
TODAY
SUNNY. HIGHS 61 TO 66.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
37 TO 42.
WEDNESDAY
INCREASING CLOUDS. HIGHS 67 TO 72.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS 41 TO 46.
THURSDAY
SUNNY. HIGHS 67 TO 72. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS
73 TO 78.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS
79 TO 84.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO 53.
SUNDAY
SUNNY. HIGHS 81 TO 86.
SUNDAY NIGHT
DECREASING CLOUDS. LOWS 49 TO 54.
MEMORIAL DAY
SUNNY. HIGHS 81 TO 86. BREEZY.
=
ORZ062-191600-
BAKER COUNTY-
130 AM PDT TUE MAY 19 2026
TODAY
AREAS OF FOG THIS MORNING. MOSTLY SUNNY. HIGHS 63 TO 70.
NORTHWEST WINDS UP TO 10 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 35 TO 45. NORTHWEST WINDS UP TO
10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS 65 TO 73. LIGHT WINDS IN THE
MORNING, BECOMING NORTHWEST 10 TO 15 MPH WITH GUSTS TO 25 MPH IN
THE AFTERNOON.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 37 TO 46. BREEZY.
NORTHWEST WINDS 10 TO 20 MPH. GUSTS TO 40 MPH IN THE EVENING.
THURSDAY
SUNNY. HIGHS 68 TO 75. NORTHWEST WINDS UP TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 48.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 74 TO 84. LOWS
42 TO 52.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 53.
SUNDAY
SUNNY. HIGHS 77 TO 85.
SUNDAY NIGHT AND MEMORIAL DAY
PARTLY CLOUDY. LOWS 43 TO 53.
HIGHS 70 TO 79. BREEZY.
TEMPERATURE
BAKER CITY 67 36 69
=
ORZ061-191600-
HARNEY COUNTY-
130 AM PDT TUE MAY 19 2026
TODAY
SUNNY. HIGHS 63 TO 69. NORTHWEST WINDS UP TO 10 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 36 TO 43. NORTH WINDS UP TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS 67 TO 73. NORTHWEST WINDS UP TO
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 37 TO 44. NORTH WINDS
10 TO 15 MPH.
THURSDAY
SUNNY. HIGHS 68 TO 75. NORTH WINDS UP TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 46.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 72 TO 82. LOWS
41 TO 50.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 41 TO 50.
SUNDAY
SUNNY. HIGHS 77 TO 84.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO 50.
MEMORIAL DAY
SUNNY. HIGHS 71 TO 79.
TEMPERATURE
BURNS 68 36 72
=
ORZ063-191600-
MALHEUR COUNTY-
230 AM MDT TUE MAY 19 2026 /130 AM PDT TUE MAY 19 2026/
TODAY
MOSTLY SUNNY. HIGHS 65 TO 72. NORTHWEST WINDS UP TO
10 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 37 TO 47. NORTH WINDS UP TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS 69 TO 75. NORTH WINDS UP TO
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 49. BREEZY. NORTH
WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
THURSDAY
SUNNY. HIGHS 70 TO 77. NORTH WINDS 10 TO 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO 50.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 76 TO 86. LOWS
44 TO 53.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 45 TO 54.
SUNDAY
SUNNY. HIGHS 81 TO 88.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 55.
MEMORIAL DAY
SUNNY. HIGHS 76 TO 85. BREEZY.
=
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