Letha, Idaho Weather
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Weather Forecast for Letha, Idaho : Gem County
Issued: 3:04 pm MDT Sep 13, 2025 Latitude: 43.8943306 Longitude: -116.6476414 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Cloudy on Overnight 60% chance of thunderstorms on Sunday Morning Fog on Monday Morning Fog on Tuesday Sunny on Wednesday Sunny on Thursday Mostly Sunny on Friday 20% chance of rain on Saturday
Low: 57°F High: 75°F High: 75°F High: 80°F High: 85°F High: 81°F High: 80°F High: 78°F
Low: 48°F Low: 46°F Low: 48°F Low: 50°F Low: 50°F Low: 50°F  
Cloudy Thunderstorms Morning Fog Morning Fog Sunny Sunny Mostly Sunny Rain
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Current Conditions at
CALDWELL - (KEUL)
63°
Clear
as of 11:56 PM MDST
Rel. Humidity: 63%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
6 MPH
060° Northeast
Cloud Level(s): Clear
Current Conditions at
ONTARIO - (KONO)
64°
Clear
as of 11:53 PM MDST
Rel. Humidity: 55%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
3 MPH
080° East
Cloud Level(s): Clear
Current Conditions at
BOISE - (KBOI)
64°
Clear
as of 11:53 PM MDST
Rel. Humidity: 45%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
8 MPH
120° Southeast
Cloud Level(s): Clear
Current Conditions at
MOUNTAIN HOME AFB - (KMUO)
61°
Clear
as of 11:55 PM MDST
Rel. Humidity: 38%
Dew Point: 36°F
Visibility: 9 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Cloudy on Overnight Overnight... Partly cloudy, with a low around 57. Calm wind becoming east southeast around 6 mph.
60% chance of thunderstorms Sunday Sunday... A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75. East southeast wind 5 to 7 mph becoming west northwest in the afternoon. Chance of precipitation is 60%.
20% chance of thunderstorms Sunday Night Sunday Night... A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 48. West wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 20%.
Morning Fog on Monday Monday... Patchy fog before 9am. Otherwise, sunny, with a high near 75. Calm wind becoming west northwest around 5 mph in the afternoon.
Morning Fog on Monday Night Monday Night... Patchy fog after 3am. Otherwise, clear, with a low around 46. North northwest wind around 5 mph becoming calm in the evening.
Morning Fog on Tuesday Tuesday... Areas of fog before 9am. Otherwise, sunny, with a high near 80.
Clear on Tuesday Night Tuesday Night... Clear, with a low around 48.
Sunny on Wednesday Wednesday... Sunny, with a high near 85.
Clear on Wednesday Night Wednesday Night... Clear, with a low around 50.
Sunny on Thursday Thursday... Sunny, with a high near 81.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 50.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 80.
20% chance of rain Friday Night Friday Night... A 20 percent chance of showers. Partly cloudy, with a low around 50.
20% chance of rain Saturday Saturday... A 20 percent chance of showers. Sunny, with a high near 78.
Current Radar Image


Sun Almanac for Letha, Idaho
Sunrise: 07:25 AM
Sunset: 7:58 PM
Civil Sunrise:06:57 AM
Civil Sunset: 8:27 PM
Nautical Sunrise: 06:22 AM
Nautical Sunset: 9:02 PM
Astro Sunrise: 05:47 AM
Astro Sunset: 9:37 PM
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