Letha, ID Weather Forecast & Current Conditions

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Letha Weather Map
UTC Time: 9/20/2026, 14:57
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Letha, ID Regional Weather

Expires:202609201500;;767597
ASUS45 KBOI 201410
RWRID 

IDAHO REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE BOISE ID
800 AM MDT SUN SEP 20 2026

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12000 FEET
WITH NO SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY


IDZ012-014-201500-
SOUTHWEST IDAHO

  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BOISE          CLEAR     57  46  66 SE6       30.15R                  
CALDWELL       CLEAR     51  47  86 CALM      30.15R                  
MOUNTAIN HOME  CLEAR     47  42  82 E7        30.16R HAZE             
$$


SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Letha, ID

Today
Sunny
78°/ 49° 26°/
0%
Monday
Sunny
80°/ 51° 27°/ 11°
0%
Tuesday
Sunny
82°/ 52° 28°/ 11°
0%
Wednesday
Sunny
81°/ 50° 27°/ 10°
0%
Thursday
Sunny
83°/ 53° 28°/ 12°
0%
Fri Night
Partly Cloudy
49°
0%
Saturday
Sunny
71°22°
0%

Day: Areas of fog this morning. Sunny. Highs 78 to 83. Light winds.

Night: Mostly clear. Lows 49 to 54. Light winds.

Upper Treasure Valley, ID

Today
Sunny
77°/ 47° 25°/
0%
Monday
Sunny
81°/ 50° 27°/ 10°
0%
Tuesday
Sunny
81°/ 50° 27°/ 10°
0%
Wednesday
Sunny
84°/ 49° 29°/
0%
Thu-Thu Night
Clear
85°29°
0%
Fri-Fri Night
Cloudy
84°29°
0%
Saturday
Sunny
73°23°
0%

Day: Areas of fog this morning. Sunny. Highs 77 to 82. Southeast winds up to 10 mph.

Night: Mostly clear. Patchy fog after midnight. Lows 47 to 55. Northwest winds up to 10 mph in the evening, shifting to southeast after midnight.

Oregon Lower Treasure Valley, OR

Today
Sunny
79°/ 49° 26°/
0%
Monday
Sunny
81°/ 51° 27°/ 11°
0%
Tuesday
Sunny
82°/ 53° 28°/ 12°
0%
Wednesday
Sunny
82°/ 49° 28°/
0%
Thursday
Cloudy
49°
0%
Friday
Cloudy
49°/ 49° /
0%
Saturday
Sunny
72°22°
0%

Day: Sunny. Highs 79 to 84. Light winds.

Night: Mostly clear. Lows 49 to 54. Light winds.

Boise Mountains, ID

Today
Sunny
66°/ 37° 19°/
0%
Monday
Sunny
69°/ 39° 21°/
0%
Tuesday
Sunny
69°/ 39° 21°/
0%
Wednesday
Sunny
70°/ 37° 21°/
0%
Thursday
Sunny
72°/ 38° 22°/
0%
Fri Night
Cloudy
38°
0%
Saturday
Sunny
62°17°
0%

Day: Areas of fog this morning. Sunny. Highs 66 to 80.

Night: Mostly clear. Lows 37 to 52.

West Central Mountains, ID

Today
Sunny
66°/ 40° 19°/
0%
Monday
Sunny
68°/ 43° 20°/
0%
Tuesday
Sunny
68°/ 43° 20°/
0%
Wednesday
Sunny
67°/ 43° 19°/
0%
Thursday
Cloudy
43°
0%
Friday
Cloudy
43°/ 40° /
0%
Saturday
Sunny
57°14°
0%

Day: Areas of fog this morning. Sunny. Highs 66 to 79.

Night: Mostly clear. Patchy fog after midnight. Lows 40 to 51.

Upper Weiser River, ID

Today
Sunny
75°/ 50° 24°/ 10°
0%
Monday
Sunny
77°/ 52° 25°/ 11°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
77°/ 51° 25°/ 11°
0%
Thursday
Cloudy
51°11°
0%
Friday
Cloudy
51°/ 49° 11°/
0%
Saturday
Sunny
68°20°
0%

Day: Sunny. Highs 75 to 82. Light winds.

Night: Mostly clear. Lows 50 to 55. Light winds.

Baker County, OR

Today
Sunny
76°/ 42° 24°/
0%
Monday
Sunny
76°/ 45° 24°/
0%
Tuesday
Sunny
76°/ 41° 24°/
0%
Wednesday
Sunny
73°/ 39° 23°/
0%
Thursday
Cloudy
39°
0%
Friday
Cloudy
39°/ 37° /
0%
Saturday
Partly Cloudy
63°17°
0%

Day: Areas of fog this morning. Sunny. Highs 76 to 82. Light winds.

Night: Mostly clear. Lows 42 to 54. Light winds.

Malheur County, OR

Today
Sunny
76°/ 43° 24°/
0%
Monday
Partly Cloudy
77°/ 47° 25°/
0%
Tuesday
Sunny
79°/ 48° 26°/
0%
Wednesday
Sunny
79°/ 46° 26°/
0%
Thursday
Cloudy
46°
0%
Friday
Cloudy
46°/ 43° /
0%
Saturday
Sunny
68°20°
0%

Day: Sunny. Highs 76 to 81. East winds up to 10 mph.

Night: Mostly clear. Lows 43 to 53. East winds up to 10 mph.

Owyhee Mountains, ID

Today
Sunny
71°/ 46° 22°/
0%
Monday
Sunny
74°/ 49° 23°/
0%
Tuesday
Sunny
75°/ 51° 24°/ 11°
0%
Wednesday
Sunny
76°/ 49° 24°/
0%
Thu Night
Clear
52°11°
0%
Fri-Fri Night
Cloudy
76°24°
0%
Saturday
Sunny
65°18°
0%

Day: Patchy fog this morning. Sunny. Highs 71 to 78.

Night: Mostly clear. Lows 46 to 55.

Harney County, OR

Today
Sunny
71°/ 38° 22°/
0%
Monday
Partly Cloudy
71°/ 43° 22°/
0%
Tuesday
Sunny
73°/ 39° 23°/
0%
Wednesday
Sunny
72°/ 39° 22°/
0%
Thu Night
Cloudy
39°
0%
Friday
Sunny
71°/ 36° 22°/
0%
Saturday
Sunny
64°18°
0%

Day: Sunny. Highs 71 to 79. East winds up to 10 mph.

Night: Increasing clouds. Lows 38 to 48. Northeast winds up to 10 mph.

Stanley, ID

Today
Sunny
62°/ 32° 17°/
0%
Monday
Sunny
65°/ 35° 18°/
0%
Tuesday
Sunny
64°/ 36° 18°/
0%
Wednesday
Sunny
65°/ 35° 18°/
0%
Thursday
Sunny
67°/ 38° 19°/
0%
Friday
Sunny
65°/ 35° 18°/
0%

Day: Sunny, warmer. Highs 62 to 72.

Night: Mostly clear. Lows 32 to 42.

Camas Prairie, ID

Today
Sunny
69°/ 33° 21°/
0%
Monday
Sunny
73°/ 40° 23°/
0%
Tuesday
Sunny
74°/ 38° 23°/
0%
Wednesday
Clear
76°24°
0%
Thursday
Clear
76°/ 44° 24°/
0%
Friday
Sunny
77°/ 41° 25°/
0%

Day: Areas of fog this morning. Sunny. Highs 69 to 74. South winds up to 10 mph.

Night: Mostly clear. Lows 33 to 39. South winds up to 10 mph in the evening, becoming light after midnight.

Southwest Highlands, ID

Today
Sunny
72°/ 44° 22°/
0%
Monday
Partly Cloudy
77°/ 49° 25°/
0%
Tuesday
Thunderstorms
76°/ 48° 24°/
N/A
Wednesday
Sunny
79°/ 47° 26°/
0%
Thu Night
Clear
49°
0%
Fri-Fri Night
Cloudy
79°26°
0%
Saturday
Sunny
72°22°
0%

Day: Areas of fog this morning. Sunny. Highs 72 to 77.

Night: Mostly clear. Lows 44 to 49.

Riggins, ID

Today
Sunny
85°/ 50° 29°/ 10°
0%
Monday
Sunny
88°/ 62° 31°/ 17°
0%
Tuesday
Cloudy
75°/ 50° 24°/ 10°
0%
Wednesday
Sunny
72°/ 48° 22°/
0%
Thursday
Cloudy
75°/ 50° 24°/ 10°
0%
Friday
Cloudy
72°/ 48° 22°/
20%
Saturday
Mostly Cloudy
72°22°
0%

Day: Sunny. Highs in the 70s to mid 80s.

Night: Clear. Lows in the 50s. Southeast winds to 15 mph.

Clayton, ID

Today
Sunny
62°/ 35° 17°/
0%
Monday
Sunny
66°/ 38° 19°/
0%
Tuesday
Sunny
66°/ 39° 19°/
0%
Wednesday
Sunny
67°/ 39° 19°/
0%
Thursday
Sunny
69°/ 40° 21°/
0%
Friday
Sunny
67°/ 39° 19°/
0%

Day: Sunny. Not as cool. Highs 62 to 72.

Night: Mostly clear. Lows 35 to 45.

Powell, ID

Today
Sunny
66°/ 37° 19°/
0%
Monday
Sunny
69°/ 39° 21°/
0%
Tuesday
Cloudy
66°/ 38° 19°/
0%
Wednesday
Sunny
61°/ 37° 16°/
0%
Thursday
Cloudy
66°/ 40° 19°/
0%
Friday
Cloudy
62°/ 35° 17°/
20%
Saturday
Rain
51°11°
20%

Day: Mostly sunny. Patchy fog early in the morning. Highs 66 to 81.

Night: Mostly clear. Lows 37 to 52.

Western Magic Valley, ID

Today
Sunny
72°/ 45° 22°/
0%
Monday
Sunny
77°/ 50° 25°/ 10°
0%
Tuesday
Sunny
77°/ 49° 25°/
0%
Wednesday
Clear
80°27°
0%
Thursday
Clear
80°/ 52° 27°/ 11°
0%
Friday
Sunny
82°/ 49° 28°/
0%
Saturday
Sunny
74°23°
0%

Day: Patchy fog this morning. Sunny. Highs 72 to 77. East winds up to 10 mph.

Night: Mostly clear. Lows 45 to 50. East winds around 10 mph.

Ketchum, ID

Today
Sunny
61°/ 34° 16°/
0%
Monday
Sunny
65°/ 37° 18°/
0%
Tuesday
Sunny
65°/ 38° 18°/
0%
Wednesday
Sunny
66°/ 38° 19°/
0%
Thursday
Sunny
68°/ 40° 20°/
0%
Friday
Sunny
68°/ 38° 20°/
0%

Day: Sunny. Not as cool. Highs 61 to 71.

Night: Mostly clear. Lows 34 to 44.

Hailey, ID

Today
Sunny
61°/ 37° 16°/
0%
Monday
Sunny
66°/ 41° 19°/
0%
Tuesday
Sunny
67°/ 42° 19°/
0%
Wednesday
Clear
69°21°
0%
Thursday
Clear
69°/ 44° 21°/
0%
Friday
Sunny
70°/ 43° 21°/
0%

Day: Sunny. Highs 61 to 71. Light and variable winds... becoming south up to 10 mph in the afternoon.

Night: Mostly clear. Lows 37 to 47. Light and variable winds...becoming north up to 10 mph after midnight.

Howe, ID

Today
Sunny
62°/ 37° 17°/
0%
Monday
Sunny
66°/ 40° 19°/
0%
Tuesday
Sunny
67°/ 41° 19°/
0%
Wednesday
Sunny
68°/ 42° 20°/
0%
Thursday
Sunny
70°/ 43° 21°/
0%
Friday
Sunny
70°/ 42° 21°/
0%

Day: Sunny. Highs 62 to 72. Light and variable winds... becoming east up to 10 mph in the afternoon.

Night: Mostly clear. Lows 37 to 45. Light and variable winds.

Names listed above may include county names.

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