Gross, ID Weather Forecast & Current Conditions

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Gross Weather Map
UTC Time: 9/18/2026, 14:13
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Aeronautical Observation: Automated synoptic observations via NWS Gateway.
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Gross, ID Regional Weather

Expires:202609181500;;658138
ASUS45 KBOI 181410
RWRID 

IDAHO REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE BOISE ID
800 AM MDT FRI SEP 18 2026

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


IDZ006-010-011-018-031-032-181500-
CENTRAL IDAHO MOUNTAINS

  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MCCALL         MOCLDY    42  41  96 CALM      30.19R                  
HAILEY         MOCLDY    54  46  76 NW8       30.20S                  
STANLEY          N/A     45  44  97 CALM      30.26R                  
SALMON         MOCLDY    55  52  89 E3        30.21R                  
CHALLIS        MOCLDY    52  49  89 NW5       30.22R                  
$$


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

Gross, ID

Today
Thunderstorms
60°/ 40° 16°/
90%
Saturday
Rain Showers
61°/ 40° 16°/
70%
Sunday
Sunny
66°19°
0%
Sun Night-Mon
Clear
42°
0%
Mon Night
Cloudy
42°
0%
Tuesday
Sunny
66°/ 41° 19°/
0%
Wednesday
Clear
41°
0%
Thursday
Clear
41°
0%

Day: Partly cloudy with a chance of rain showers this morning, then rain showers likely with a chance of thunderstorms this afternoon. Areas of fog this morning. Patchy smoke this afternoon. Chance of rain 60 percent. Highs 60 to 73.

Night: A chance of rain showers with a slight chance of thunderstorms in the evening, then rain showers after midnight. Areas of fog. Chance of rain 90 percent. Lows 40 to 50.

Upper Weiser River, ID

Today
Rain Showers
70°/ 49° 21°/
30%
Saturday
Rain Showers
73°/ 50° 23°/ 10°
70%
Sunday
Sunny
76°24°
0%
Sun Night-Mon
Clear
52°11°
0%
Mon Night
Cloudy
52°11°
0%
Tuesday
Clear
77°25°
0%
Wednesday
Clear
77°/ 51° 25°/ 11°
0%
Thursday
Sunny
80°27°
0%

Day: Partly cloudy. A chance of showers this afternoon. Chance of rain 30 percent. Highs 70 to 77. Light winds.

Night: Partly cloudy. A chance of showers in the evening. Chance of rain 30 percent. Lows 49 to 54. North winds up to 10 mph.

Boise Mountains, ID

Today
Thunderstorms
59°/ 35° 15°/
30%
Saturday
Rain Showers
59°/ 34° 15°/
80%
Sunday
Sunny
66°19°
0%
Sun Night-Mon
Clear
36°
0%
Mon Night
Cloudy
38°
0%
Tuesday
Rain Showers
68°/ 37° 20°/
20%
Wednesday
Clear
37°
0%
Thursday
Clear
37°
0%

Day: Mostly cloudy with a chance of rain showers. Areas of fog this morning. Patchy smoke this afternoon. A chance of thunderstorms this afternoon. Chance of rain 30 percent. Cooler with highs 59 to 73.

Night: A slight chance of thunderstorms in the evening. Partly cloudy with a chance of rain showers. Areas of fog. Chance of rain 30 percent. Lows 35 to 50.

Lower Treasure Valley, ID

Today
Rain Showers
73°/ 49° 23°/
30%
Saturday
Sunny
76°/ 49° 24°/
0%
Sunday
Sunny
79°26°
0%
Sun Night-Mon
Clear
50°10°
0%
Mon Night
Cloudy
52°11°
0%
Tuesday
Clear
80°27°
0%
Wednesday
Clear
80°27°
0%
Thursday
Clear
80°27°
0%

Day: Partly cloudy. A chance of showers this morning. Areas of fog this morning. Chance of rain 30 percent. Highs 73 to 78. Northwest winds up to 10 mph.

Night: Mostly clear. Patchy fog after midnight. Lows 49 to 54. Northwest winds up to 10 mph.

Oregon Lower Treasure Valley, OR

Today
Sunny
75°/ 48° 24°/
30%
Saturday
Sunny
78°/ 48° 26°/
0%
Sunday
Sunny
80°27°
0%
Sun Night-Mon
Clear
49°
0%
Mon Night
Cloudy
50°10°
0%
Tuesday
Clear
80°27°
0%
Wednesday
Clear
80°27°
0%
Thursday
Clear
80°27°
0%

Day: Patchy fog this morning. Mostly sunny. Highs 75 to 80. Northwest winds up to 10 mph.

Night: Partly cloudy. A chance of showers in the evening. Chance of rain 30 percent. Lows 48 to 55. Northwest winds around 10 mph with gusts to 20 mph.

Upper Treasure Valley, ID

Today
Rain Showers
70°/ 47° 21°/
30%
Saturday
Sunny
73°/ 47° 23°/
0%
Sunday
Sunny
78°/ 49° 26°/
0%
Monday
Sunny
80°/ 50° 27°/ 10°
0%
Tuesday
Clear
80°27°
0%
Wednesday
Clear
80°27°
0%
Thursday
Clear
80°27°
0%

Day: Partly cloudy with a 30 percent chance of showers. Patchy fog this morning. Patchy smoke this afternoon. Cooler with highs 70 to 75. Northwest winds 10 to 15 mph with gusts to 25 mph.

Night: Partly cloudy in the evening, then clearing. Areas of fog after midnight. Lows 47 to 53. West winds 10 to 15 mph. Gusts to 25 mph in the evening.

Baker County, OR

Today
Thunderstorms
68°/ 38° 20°/
40%
Saturday
Sunny
72°/ 39° 22°/
0%
Sunday
Sunny
75°24°
0%
Sun Night-Mon
Clear
41°
0%
Mon Night
Partly Cloudy
42°
0%
Tuesday
Sunny
76°/ 39° 24°/
0%
Wednesday
Sunny
74°/ 40° 23°/
0%

Day: Mostly sunny. Areas of fog this morning. A chance of rain showers with a slight chance of thunderstorms this afternoon. Chance of rain 30 percent. Highs 68 to 76. Northwest winds up to 10 mph with gusts to 20 mph.

Night: Partly cloudy with a chance of rain showers in the evening, then mostly clear after midnight. Areas of fog after midnight. Chance of rain 40 percent. Lows 38 to 52. Northwest winds 10 to 15 mph.

Stanley, ID

Today
Thunderstorms
55°/ 35° 13°/
N/A
Saturday
Thunderstorms
54°/ 34° 12°/
N/A
Sunday
Sunny
62°17°
0%
Sun Night-Mon
Clear
35°
0%
Mon Night
Cloudy
36°
0%
Tuesday
Rain
63°/ 35° 17°/
N/A
Wednesday
Clear
35°
0%
Thursday
Clear
35°
0%

Day: Mostly cloudy. A chance of rain in the morning...then a chance of showers and thunderstorms in the afternoon. Highs 55 to 65.

Night: Rain showers likely and a slight chance of thunderstorms in the evening...then a chance of rain after midnight. Lows 35 to 45.

Riggins, ID

Today
Thunderstorms
65°/ 50° 18°/ 10°
70%
Saturday
Mostly Cloudy
78°/ 50° 26°/ 10°
0%
Sunday
Sunny
74°/ 50° 23°/ 10°
0%
Monday
Sunny
75°/ 50° 24°/ 10°
0%
Tuesday
Sunny
85°/ 50° 29°/ 10°
0%
Wednesday
Sunny
85°/ 50° 29°/ 10°
0%
Thursday
Sunny
88°31°
0%

Day: Mostly cloudy. Chance of rain showers and a slight chance of thunderstorms in the afternoon. Chance of precipitation 50 percent. Highs in the mid 60s to upper 70s.

Night: Rain showers likely and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Chance of precipitation 70 percent. Lows in the 50s.

Powell, ID

Today
Thunderstorms
59°/ 39° 15°/
70%
Saturday
Rain
60°/ 38° 16°/
50%
Sunday
Sunny
66°/ 39° 19°/
0%
Monday
Sunny
67°/ 40° 19°/
0%
Tuesday
Rain
65°/ 38° 18°/
20%
Wednesday
Sunny
64°/ 38° 18°/
0%
Thursday
Sunny
68°20°
0%

Day: Mostly cloudy. Areas of fog in the morning. A 50 percent chance of showers and thunderstorms in the afternoon. Highs 59 to 74.

Night: Rain showers likely and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Patchy fog in the evening, then areas of fog after midnight. Chance of precipitation 70 percent. Lows 39 to 52.

Malheur County, OR

Today
Sunny
69°/ 41° 21°/
30%
Saturday
Sunny
72°/ 42° 22°/
0%
Sunday
Sunny
77°/ 45° 25°/
0%
Mon-Mon Night
Cloudy
78°26°
0%
Tuesday
Clear
78°26°
0%
Wednesday
Clear
78°26°
0%
Thursday
Clear
78°26°
0%

Day: Areas of fog this morning. Mostly sunny. Highs 69 to 76. West winds up to 10 mph.

Night: Partly cloudy with a chance of rain showers in the evening, then mostly clear after midnight. Patchy fog after midnight. Chance of rain 30 percent. Lows 41 to 51. West winds up to 10 mph.

Clayton, ID

Today
Thunderstorms
56°/ 37° 13°/
N/A
Saturday
Thunderstorms
54°/ 36° 12°/
N/A
Sunday
Sunny
62°17°
0%
Sun Night-Mon
Clear
37°
0%
Mon Night
Cloudy
39°
0%
Tuesday
Rain
64°/ 38° 18°/
N/A
Wednesday
Clear
38°
0%
Thursday
Clear
38°
0%

Day: Mostly cloudy. A chance of rain in the morning...then a chance of rain showers and a slight chance of thunderstorms in the afternoon. Highs 56 to 66.

Night: Rain showers likely and a slight chance of thunderstorms. Colder. Lows 37 to 47.

Owyhee Mountains, ID

Today
Rain Showers
65°/ 43° 18°/
30%
Saturday
Sunny
68°/ 44° 20°/
0%
Sunday
Sunny
72°/ 46° 22°/
0%
Mon-Mon Night
Cloudy
74°23°
0%
Tuesday
Clear
74°23°
0%
Wednesday
Clear
74°23°
0%
Thursday
Clear
74°23°
0%

Day: Partly cloudy with a 30 percent chance of rain showers. Patchy smoke this afternoon. Highs 65 to 70.

Night: Partly cloudy with a chance of rain showers in the evening, then mostly clear after midnight. Chance of rain 30 percent. Lows 43 to 53.

Camas Prairie, ID

Today
Thunderstorms
64°/ 36° 18°/
60%
Saturday
Rain Showers
62°/ 36° 17°/
80%
Sunday
Sunny
69°/ 40° 21°/
0%
Mon-Mon Night
Cloudy
71°22°
0%
Tuesday
Rain Showers
73°/ 41° 23°/
20%
Wednesday
Clear
41°
0%
Thursday
Clear
41°
0%

Day: Areas of fog this morning. Rain showers likely this morning, then partly cloudy with a chance of rain showers with a slight chance of thunderstorms this afternoon. Chance of rain 60 percent. Cooler with highs 64 to 69. West winds 10 to 15 mph.

Night: Partly cloudy. A slight chance of rain showers and thunderstorms in the evening, then a chance of rain showers after midnight. Areas of fog after midnight. Chance of rain 30 percent. Lows 36 to 42. Northwest winds 10 to 15 mph in the evening, becoming light after midnight.

Ketchum, ID

Today
Thunderstorms
57°/ 34° 14°/
N/A
Saturday
Thunderstorms
55°/ 34° 13°/
N/A
Sunday
Sunny
61°/ 36° 16°/
0%
Mon-Mon Night
Cloudy
63°17°
0%
Tuesday
Rain
64°/ 38° 18°/
N/A
Wednesday
Clear
38°
0%
Thursday
Clear
38°
0%

Day: Partly sunny. A chance of rain in the morning...then a chance of rain showers and a slight chance of thunderstorms in the afternoon. Highs 57 to 67.

Night: Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms in the evening...then a chance of rain after midnight. Colder. Lows 34 to 43.

Harney County, OR

Today
Partly Cloudy
66°/ 35° 19°/
0%
Saturday
Sunny
69°/ 37° 21°/
0%
Sunday
Sunny
72°/ 39° 22°/
0%
Mon-Mon Night
Cloudy
73°23°
0%
Tuesday
Clear
73°23°
0%
Wednesday
Clear
73°/ 39° 23°/
0%

Day: Partly sunny this morning, then clearing. Areas of fog this morning. Highs 66 to 72. West winds 10 to 15 mph.

Night: Mostly clear. Lows 35 to 45. Northwest winds 10 to 15 mph.

Kooskia, ID

Today
Cloudy
65°/ 48° 18°/
40%
Saturday
Sunny
67°/ 55° 19°/ 13°
0%
Sunday
Sunny
72°/ 48° 22°/
0%
Monday
Sunny
85°/ 48° 29°/
0%
Tuesday
Sunny
82°/ 48° 28°/
0%
Wednesday
Sunny
82°/ 48° 28°/
0%
Thursday
Sunny
85°29°
0%

Day: Partly cloudy. Highs 65 to 79.

Night: Mostly cloudy with a 40 percent chance of rain. Lows in the upper 40s to mid 50s.

Hailey, ID

Today
Thunderstorms
58°/ 38° 14°/
N/A
Saturday
Thunderstorms
55°/ 37° 13°/
N/A
Sunday
Sunny
61°/ 40° 16°/
0%
Monday
Cloudy
65°18°
0%
Tuesday
Cloudy
65°/ 40° 18°/
0%
Wednesday
Sunny
67°/ 41° 19°/
0%

Day: Partly sunny. A chance of rain in the morning...then a chance of rain showers and a slight chance of thunderstorms in the afternoon. Highs 58 to 68. North winds up to 10 mph... shifting to south around 10 mph in the afternoon.

Night: Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms in the evening...then a chance of rain after midnight. Colder. Lows 38 to 46. Northwest winds up to 10 mph in the evening...becoming light and variable.

Salmon, ID

Today
Thunderstorms
60°/ 52° 16°/ 11°
90%
Saturday
Thunderstorms
55°/ 40° 13°/
70%
Sunday
Cloudy
65°/ 40° 18°/
0%
Monday
Sunny
68°/ 52° 20°/ 11°
0%
Tuesday
Rain
68°/ 40° 20°/
20%
Wednesday
Sunny
68°/ 40° 20°/
0%
Thursday
Sunny
70°21°
0%

Day: Areas of rain in the morning, then rain showers likely and a chance of thunderstorms in the afternoon. Chance of precipitation 90 percent. Highs in the 60s. West winds to 15 mph in the afternoon.

Night: Rain showers likely and a chance of thunderstorms. Chance of precipitation 90 percent. Lows in the 40s to lower 50s.

Southwest Highlands, ID

Today
Thunderstorms
64°/ 41° 18°/
30%
Saturday
Sunny
66°/ 42° 19°/
0%
Sunday
Sunny
72°22°
0%
Sun Night
Cloudy
46°
0%
Mon Night
Cloudy
46°
0%
Tuesday
Clear
75°24°
0%
Wednesday
Clear
75°24°
0%
Thursday
Clear
75°24°
0%

Day: Partly cloudy with a chance of rain showers. A slight chance of thunderstorms this afternoon. Chance of rain 30 percent. Cooler with highs 64 to 69.

Night: Partly cloudy with a slight chance of rain showers in the evening, then mostly clear after midnight. Chance of rain 20 percent. Lows 41 to 47.

Names listed above may include county names.

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