Custer County, ID Weather Forecast

County weather hub

57°

Mostly Clear

Compare major city weather across Custer County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.

Friday, July 17, 2026

Wind: 3 mph SSE

Overnight

Mostly clear. Low around 57, with temperatures rising to around 59 overnight. South southeast wind around 3 mph.

County weather hub

County Weather Overview

This county weather page brings together forecast coverage for Custer County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.

Current forecast coverage spans 1 of 1 mapped cities in Custer County.

Page Snapshot

Page focus: county weather
Forecast window: Jul 17 to Jul 23, 2026
Latest sync: Jul 17, 2026 2:43 AM MDT
Forecast office: PIH
Source: NOAA / NWS

Next High

73°F

Friday

Next Low

57°F

Overnight

Rain Outlook

Periods mentioning precipitation

Windiest

2 to 13 mph

Sunday

Daily Outlook

Today

Jul 17

Scattered Showers And Thunderstorms

73 °F

/ 57°F

Wind 2 to 7 mph

Sat

Jul 18

Mostly Sunny then Chance Showers And Thunderstorms

74 °F

/ 55°F

Wind 2 to 9 mph

Sun

Jul 19

Sunny

75 °F

/ 58°F

Wind 2 to 13 mph

Mon

Jul 20

Partly Sunny

75 °F

/ 61°F

Wind 1 to 6 mph

Tue

Jul 21

Slight Chance Light Rain then Chance Showers And Thunderstorms

72 °F

/ 59°F

Wind 1 to 6 mph

Wed

Jul 22

Slight Chance Light Rain then Showers And Thunderstorms Likely

71 °F

/ 57°F

Wind 1 to 7 mph

Thu

Jul 23

Partly Sunny then Chance Showers And Thunderstorms

71 °F

Wind 2 to 7 mph

This Week in Custer County

Sunday looks like the warmest upcoming period in Custer County at 75 degrees F.

Saturday Night is the coolest period ahead with temperatures near 55 degrees F.

The strongest winds are forecast for Sunday at about 2 to 13 mph WSW.

Precipitation is mentioned in 8 upcoming forecast periods.

Forecast Details

Last updated: Jul 17, 2026 2:43 AM MDT
Coverage: 7 days
Time zone: America/Boise
Forecast office: PIH
Radar station: KCBX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Friday

Jul 17

73°F

Scattered Showers And Thunderstorms

2 to 7 mph SSE

Scattered showers and thunderstorms between 11am and noon, then scattered showers and thunderstorms between noon and 2pm, then showers and thunderstorms. Partly sunny. High near 73, with temperatures falling to around 66 in the afternoon. South southeast wind 2 to 7 mph. Chance of precipitation is 80%.

Friday Night

Jul 17

56°F

Scattered Showers And Thunderstorms then Partly Cloudy

2 to 6 mph SSE

Scattered showers and thunderstorms before 10pm. Partly cloudy. Low around 56, with temperatures rising to around 58 overnight. South southeast wind 2 to 6 mph. Chance of precipitation is 40%.

Saturday

Jul 18

74°F

Mostly Sunny then Chance Showers And Thunderstorms

2 to 9 mph W

A chance of showers and thunderstorms between 1pm and 3pm. Mostly sunny, with a high near 74. West wind 2 to 9 mph. Chance of precipitation is 30%.

Saturday Night

Jul 18

55°F

Partly Cloudy

3 to 8 mph WSW

Partly cloudy, with a low around 55. West southwest wind 3 to 8 mph.

Sunday

Jul 19

75°F

Sunny

2 to 13 mph WSW

Sunny, with a high near 75.

Sunday Night

Jul 19

58°F

Partly Cloudy

2 to 12 mph WSW

Partly cloudy, with a low around 58.

Monday

Jul 20

75°F

Partly Sunny

1 to 6 mph SSE

Partly sunny, with a high near 75.

Monday Night

Jul 20

61°F

Mostly Cloudy

2 to 6 mph W

Mostly cloudy, with a low around 61.

Tuesday

Jul 21

72°F

Slight Chance Light Rain then Chance Showers And Thunderstorms

1 to 6 mph W

A slight chance of rain before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 72. Chance of precipitation is 50%.

Tuesday Night

Jul 21

59°F

Chance Showers And Thunderstorms then Mostly Cloudy

2 to 6 mph W

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

Wednesday

Jul 22

71°F

Slight Chance Light Rain then Showers And Thunderstorms Likely

1 to 7 mph W

A slight chance of rain before noon, then showers and thunderstorms likely. Partly sunny, with a high near 71. Chance of precipitation is 60%.

Wednesday Night

Jul 22

57°F

Chance Showers And Thunderstorms then Slight Chance Light Rain

2 to 7 mph NW

A chance of showers and thunderstorms before midnight, then a slight chance of rain. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.

Thursday

Jul 23

71°F

Partly Sunny then Chance Showers And Thunderstorms

2 to 7 mph W

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 71. Chance of precipitation is 50%.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Overnight Jul 17	Mostly Clear	57°F	3 mph SSE	Mostly clear. Low around 57, with temperatures rising to around 59 overnight. South southeast wind around 3 mph.
Friday Jul 17	Scattered Showers And Thunderstorms	73°F	2 to 7 mph SSE	Scattered showers and thunderstorms between 11am and noon, then scattered showers and thunderstorms between noon and 2pm...
Friday Night Jul 17	Scattered Showers And Thunderstorms then Partly Cloudy	56°F	2 to 6 mph SSE	Scattered showers and thunderstorms before 10pm. Partly cloudy. Low around 56, with temperatures rising to around 58 ove...
Saturday Jul 18	Mostly Sunny then Chance Showers And Thunderstorms	74°F	2 to 9 mph W	A chance of showers and thunderstorms between 1pm and 3pm. Mostly sunny, with a high near 74. West wind 2 to 9 mph. Chan...
Saturday Night Jul 18	Partly Cloudy	55°F	3 to 8 mph WSW	Partly cloudy, with a low around 55. West southwest wind 3 to 8 mph.
Sunday Jul 19	Sunny	75°F	2 to 13 mph WSW	Sunny, with a high near 75.
Sunday Night Jul 19	Partly Cloudy	58°F	2 to 12 mph WSW	Partly cloudy, with a low around 58.
Monday Jul 20	Partly Sunny	75°F	1 to 6 mph SSE	Partly sunny, with a high near 75.
Monday Night Jul 20	Mostly Cloudy	61°F	2 to 6 mph W	Mostly cloudy, with a low around 61.
Tuesday Jul 21	Slight Chance Light Rain then Chance Showers And Thunderstorms	72°F	1 to 6 mph W	A slight chance of rain before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 72. Cha...
Tuesday Night Jul 21	Chance Showers And Thunderstorms then Mostly Cloudy	59°F	2 to 6 mph W	A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Chance of precipitation is 3...
Wednesday Jul 22	Slight Chance Light Rain then Showers And Thunderstorms Likely	71°F	1 to 7 mph W	A slight chance of rain before noon, then showers and thunderstorms likely. Partly sunny, with a high near 71. Chance of...
Wednesday Night Jul 22	Chance Showers And Thunderstorms then Slight Chance Light Rain	57°F	2 to 7 mph NW	A chance of showers and thunderstorms before midnight, then a slight chance of rain. Mostly cloudy, with a low around 57...
Thursday Jul 23	Partly Sunny then Chance Showers And Thunderstorms	71°F	2 to 7 mph W	A chance of showers and thunderstorms after noon. Partly sunny, with a high near 71. Chance of precipitation is 50%.

Major City Forecasts

Live forecast snapshots for major cities across Custer County.

Challis

Population 1,091

75°F

Mostly Sunny then Showers And Thunderstorms Likely

Friday

3 to 9 mph

Coverage

Tracked cities

Coverage

100%

Forecast coverage currently spans 1 of 1 mapped cities in Custer County.

Largest mapped city population in this region: 1,091.

Region Links

Idaho weather

Statewide weather overview

United States weather

National weather entry point

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Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.