940
FPUS55 KBOI 310637
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
1236 AM MDT SUN MAY 31 2026
FORECAST UPDATED.
SPOT TEMPERATURES ARE FOR .SATURDAY THROUGH SATURDAY..., SUNDAY,
SUNDAY NIGHT, AND MONDAY.
IDZ011-311400-
WEST CENTRAL MOUNTAINS-
1236 AM MDT SUN MAY 31 2026
TODAY
MOSTLY CLOUDY, THEN CLEARING. AREAS OF FOG. HIGHS 56 TO
69.
TONIGHT
MOSTLY CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS 34 TO
44.
MONDAY
SUNNY. PATCHY FOG IN THE MORNING. A CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 58 TO
71.
MONDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
37 TO 47.
TUESDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 60 TO
74.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 40 TO 50.
WEDNESDAY
MOSTLY SUNNY. HIGHS 66 TO 80.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS
AND THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. CHANCE OF RAIN
30 PERCENT. LOWS 43 TO 53.
THURSDAY
MOSTLY SUNNY. PATCHY FOG IN THE MORNING. A SLIGHT
CHANCE OF RAIN SHOWERS IN THE MORNING, THEN A CHANCE OF RAIN
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
CHANCE OF RAIN 30 PERCENT. HIGHS 62 TO 75.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 40 TO 50. HIGHS
66 TO 79.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
42 TO 52.
SATURDAY
SUNNY. HIGHS 64 TO 77.
TEMPERATURE
MCCALL 37 64 35 66
=
IDZ013-311400-
BOISE MOUNTAINS-
1236 AM MDT SUN MAY 31 2026
TODAY
PARTLY CLOUDY AFTER MIDNIGHT, THEN CLEARING. AREAS OF
FOG. HIGHS 57 TO 72.
TONIGHT
MOSTLY CLEAR. LOWS 30 TO 45.
MONDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 61 TO 75.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 32 TO 47.
TUESDAY
MOSTLY SUNNY. HIGHS 65 TO 79.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 36 TO 51.
WEDNESDAY AND WEDNESDAY NIGHT
PARTLY CLOUDY. HIGHS 71 TO 85.
LOWS 40 TO 55.
THURSDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 66 TO 80.
THURSDAY NIGHT THROUGH SATURDAY
MOSTLY CLEAR. LOWS 39 TO 54.
HIGHS 70 TO 84.
TEMPERATURE
IDAHO CITY 36 70 35 74
=
IDZ028-311400-
CAMAS PRAIRIE-
1236 AM MDT SUN MAY 31 2026
TODAY
PARTLY CLOUDY AFTER MIDNIGHT, THEN CLEARING. HIGHS 64 TO
69. BREEZY. WEST WINDS 10 TO 20 MPH. GUSTS TO 25 MPH, INCREASING
TO 30 MPH THIS AFTERNOON.
TONIGHT
MOSTLY CLEAR. LOWS 33 TO 38. BREEZY. WEST WINDS 10 TO
20 MPH IN THE EVENING, BECOMING NORTHWEST UP TO 10 MPH AFTER
MIDNIGHT.
MONDAY
SUNNY. HIGHS 66 TO 71. LIGHT WINDS IN THE MORNING,
BECOMING WEST 10 TO 15 MPH WITH GUSTS TO 25 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 34 TO 39. NORTHWEST WINDS
10 TO 15 MPH. GUSTS TO 25 MPH IN THE EVENING.
TUESDAY
SUNNY. HIGHS 72 TO 77. LIGHT WINDS IN THE MORNING,
BECOMING SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 25 MPH IN THE
AFTERNOON.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS
77 TO 82.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO 47.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 73 TO 83. LOWS
39 TO 48. BREEZY.
TEMPERATURE
FAIRFIELD 36 67 33 69
=
IDZ033-311400-
UPPER WEISER RIVER-
1236 AM MDT SUN MAY 31 2026
TODAY
MOSTLY CLOUDY AFTER MIDNIGHT, THEN BECOMING MOSTLY SUNNY
THIS MORNING, THEN BECOMING SUNNY THIS AFTERNOON. HIGHS 68 TO 74.
NORTH WINDS 10 TO 15 MPH, BECOMING LIGHT THIS AFTERNOON.
TONIGHT
MOSTLY CLEAR. LOWS 44 TO 49. NORTH WINDS 10 TO 15 MPH.
MONDAY
SUNNY. HIGHS 71 TO 77. NORTHWEST WINDS UP TO 10 MPH
WITH GUSTS TO 20 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 51. NORTH WINDS UP TO
10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 74 TO 80. LIGHT WINDS.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 49 TO 54.
WEDNESDAY
MOSTLY SUNNY. HIGHS 79 TO 84.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS 52 TO 57.
THURSDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS.
HIGHS 75 TO 80.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS
78 TO 84.
FRIDAY NIGHT AND SATURDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS
77 TO 82.
TEMPERATURE
COUNCIL 45 73 45 75
CAMBRIDGE 45 74 44 76
=
ORZ064-311400-
OREGON LOWER TREASURE VALLEY-
1236 AM MDT SUN MAY 31 2026 /1136 PM PDT SAT MAY 30 2026/
TODAY
DECREASING CLOUDS. HIGHS 73 TO 78. BREEZY. NORTHWEST
WINDS 10 TO 20 MPH. GUSTS TO 30 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 47 TO 52. NORTHWEST WINDS 10 TO
15 MPH WITH GUSTS TO 25 MPH.
MONDAY
SUNNY. HIGHS 77 TO 82. NORTHWEST WINDS AROUND 10 MPH.
MONDAY NIGHT
INCREASING CLOUDS. LOWS 49 TO 54. NORTH WINDS
AROUND 10 MPH WITH GUSTS TO 20 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 80 TO 85. LIGHT WINDS.
TUESDAY NIGHT AND WEDNESDAY
PARTLY CLOUDY. LOWS 52 TO 57.
HIGHS 83 TO 88.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 55 TO 60.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 80 TO 89. LOWS
52 TO 58.
TEMPERATURE
ONTARIO 48 76 49 80
=
IDZ012-311400-
LOWER TREASURE VALLEY-
1236 AM MDT SUN MAY 31 2026
TODAY
DECREASING CLOUDS. HIGHS 72 TO 77. NORTHWEST WINDS 10 TO
15 MPH. GUSTS TO 30 MPH AFTER MIDNIGHT.
TONIGHT
MOSTLY CLEAR. LOWS 45 TO 50. NORTHWEST WINDS 10 TO
15 MPH.
MONDAY
SUNNY. HIGHS 76 TO 81. NORTHWEST WINDS UP TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 47 TO 52. NORTH WINDS UP TO
10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 80 TO 85. LIGHT WINDS.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 55.
WEDNESDAY AND WEDNESDAY NIGHT
PARTLY CLOUDY. HIGHS 83 TO 88.
LOWS 53 TO 58.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 80 TO 89. LOWS
51 TO 58.
TEMPERATURE
CALDWELL 47 75 46 79
=
IDZ014-311400-
UPPER TREASURE VALLEY-
1236 AM MDT SUN MAY 31 2026
TODAY
DECREASING CLOUDS. HIGHS 72 TO 77. BREEZY. NORTHWEST
WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 42 TO 47. BREEZY. NORTHWEST WINDS
10 TO 20 MPH WITH GUSTS TO 30 MPH IN THE EVENING, DECREASING TO
AROUND 10 MPH AFTER MIDNIGHT.
MONDAY
SUNNY. HIGHS 76 TO 81. NORTHWEST WINDS 10 TO 15 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 44 TO 50. NORTHWEST WINDS
10 TO 15 MPH IN THE EVENING, BECOMING LIGHT AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS 82 TO 87. LIGHT WINDS IN THE
MORNING, BECOMING NORTHWEST UP TO 10 MPH IN THE AFTERNOON.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 49 TO 54.
WEDNESDAY AND WEDNESDAY NIGHT
PARTLY CLOUDY. HIGHS 85 TO 90.
LOWS 51 TO 56. BREEZY.
THURSDAY
SUNNY. HIGHS 81 TO 86. BREEZY.
THURSDAY NIGHT
CLEAR. LOWS 49 TO 54. BREEZY.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 85 TO 91. LOWS
52 TO 57.
TEMPERATURE
BOISE 49 74 47 78
MOUNTAIN HOME 47 75 43 79
=
IDZ016-311400-
WESTERN MAGIC VALLEY-
1236 AM MDT SUN MAY 31 2026
TODAY
DECREASING CLOUDS. HIGHS 69 TO 74. BREEZY. WEST WINDS
10 TO 20 MPH WITH GUSTS TO 30 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 41 TO 46. BREEZY. SOUTHWEST WINDS
10 TO 20 MPH.
MONDAY
SUNNY. HIGHS 73 TO 78. WEST WINDS 10 TO 15 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 47. NORTHWEST WINDS
10 TO 15 MPH IN THE EVENING, BECOMING LIGHT AFTER MIDNIGHT.
TUESDAY
SUNNY. HIGHS 79 TO 84. LIGHT WINDS IN THE MORNING,
BECOMING NORTHWEST AROUND 10 MPH IN THE AFTERNOON.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 47 TO 52.
WEDNESDAY AND WEDNESDAY NIGHT
PARTLY CLOUDY. HIGHS 84 TO 89.
LOWS 50 TO 55.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 80 TO 90. LOWS
48 TO 56. BREEZY.
TEMPERATURE
JEROME 47 70 44 74
TWIN FALLS 47 70 45 74
=
IDZ029-311400-
OWYHEE MOUNTAINS-
1236 AM MDT SUN MAY 31 2026
TODAY
DECREASING CLOUDS. HIGHS 64 TO 69.
TONIGHT
MOSTLY CLEAR. LOWS 38 TO 48.
MONDAY
SUNNY. HIGHS 68 TO 73.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 50.
TUESDAY
MOSTLY SUNNY. HIGHS 73 TO 78.
TUESDAY NIGHT THROUGH WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS
46 TO 55. HIGHS 75 TO 81.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 72 TO 77. LOWS
45 TO 54.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 74 TO 82. LOWS
48 TO 56.
=
IDZ015-311400-
SOUTHWEST HIGHLANDS-
1236 AM MDT SUN MAY 31 2026
TODAY
DECREASING CLOUDS. HIGHS 66 TO 72.
TONIGHT
MOSTLY CLEAR. LOWS 39 TO 44.
MONDAY
SUNNY. HIGHS 69 TO 76.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 45.
TUESDAY
SUNNY. HIGHS 77 TO 83.
TUESDAY NIGHT THROUGH WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS
45 TO 52. HIGHS 80 TO 87. BREEZY.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 76 TO 81. LOWS
45 TO 50.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 80 TO 87. LOWS
48 TO 54.
=
IDZ030-311400-
SOUTHERN TWIN FALLS COUNTY-
1236 AM MDT SUN MAY 31 2026
TODAY
DECREASING CLOUDS. HIGHS 67 TO 72.
TONIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS 41 TO 46.
MONDAY
SUNNY. HIGHS 70 TO 75.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 46.
TUESDAY
SUNNY. HIGHS 78 TO 83.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 47 TO 52.
WEDNESDAY AND WEDNESDAY NIGHT
PARTLY CLOUDY. HIGHS 82 TO 87.
LOWS 50 TO 55.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 79 TO 89. LOWS
47 TO 57. BREEZY.
=
ORZ062-311400-
BAKER COUNTY-
1136 PM PDT SAT MAY 30 2026
TODAY
PARTLY CLOUDY AFTER MIDNIGHT, THEN CLEARING. HIGHS 65 TO
73. NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH AFTER MIDNIGHT,
DECREASING TO 25 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 36 TO 46. BREEZY. NORTHWEST WINDS
10 TO 20 MPH. GUSTS TO 35 MPH IN THE EVENING.
MONDAY
SUNNY. HIGHS 69 TO 76. NORTHWEST WINDS UP TO 10 MPH
WITH GUSTS TO 20 MPH.
MONDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
39 TO 49. NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE
EVENING.
TUESDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 73 TO
80. LIGHT WINDS.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 42 TO 52.
WEDNESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 74 TO 83.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS,
MAINLY IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. CHANCE OF RAIN
30 PERCENT. LOWS 43 TO 53. BREEZY.
THURSDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING. PATCHY FOG IN THE MORNING. CHANCE OF RAIN 20 PERCENT.
HIGHS 71 TO 80.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 41 TO 51. HIGHS
75 TO 84.
FRIDAY NIGHT AND SATURDAY
PARTLY CLOUDY. LOWS 42 TO 52. HIGHS
70 TO 80.
TEMPERATURE
BAKER CITY 33 68 36 72
=
ORZ061-311400-
HARNEY COUNTY-
1136 PM PDT SAT MAY 30 2026
TODAY
MOSTLY CLEAR. HIGHS 62 TO 69. NORTHWEST WINDS UP TO
10 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 35 TO 42. NORTHWEST WINDS UP TO
10 MPH.
MONDAY
SUNNY. HIGHS 66 TO 73. LIGHT WINDS.
MONDAY NIGHT
INCREASING CLOUDS. LOWS 38 TO 45. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS 71 TO 80. LIGHT WINDS.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO 50.
WEDNESDAY
PARTLY SUNNY. HIGHS 70 TO 79.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS IN
THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. CHANCE OF RAIN
30 PERCENT. LOWS 40 TO 48.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 69 TO 76. LOWS
40 TO 47.
FRIDAY AND FRIDAY NIGHT
MOSTLY CLEAR. HIGHS 73 TO 81. LOWS
40 TO 49.
SATURDAY
MOSTLY SUNNY. HIGHS 67 TO 76.
TEMPERATURE
BURNS 30 68 35 73
=
ORZ063-311400-
MALHEUR COUNTY-
1236 AM MDT SUN MAY 31 2026 /1136 PM PDT SAT MAY 30 2026/
TODAY
MOSTLY CLEAR. HIGHS 67 TO 74. NORTHWEST WINDS 10 TO
15 MPH. GUSTS TO 25 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 39 TO 49. NORTH WINDS 10 TO 15 MPH
WITH GUSTS TO 25 MPH.
MONDAY
SUNNY. HIGHS 71 TO 78. NORTH WINDS UP TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 51. NORTH WINDS 10 TO
15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 77 TO 83. LIGHT WINDS.
TUESDAY NIGHT THROUGH WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS
46 TO 56. HIGHS 78 TO 85.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 75 TO 81. LOWS
44 TO 54.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 76 TO 86. LOWS
46 TO 55.
=
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