Observed 11:35 AM MDT at KSMN

Salmon, ID weather

Overcast and 43°6°, freeze watch tonight, low 24°−4°.

Mostly agree

Now 43°6°

Cloudy

Wind: Calm; Light through 11 PM
Dew point: 34°1°; Dry, static shocks likely
UV index: 1Low; Moderate 1–3 PM · peak 3
Air quality: 14Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.33 inHg1027 hPa; Falling · −0.07 inHg−2.4 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 40°4° tonight after 8 PM
Hard freeze tonight 9 PM–10 AM (low 22°−6°)
Fog tomorrow 8–10 AM
Drops 12°7° tomorrow night 6–9 PM (51°11° → 39°4°)
Hard freeze tomorrow night 11 PM–10 AM (low 26°−3°)

This afternoonUp to 50°10° by 5 PM · Clear
TonightDown to 24°−4° by 5 AM · freezing, low 24°−4° · Clear
Tomorrow morningUp to 40°4° by 11 AM · freezing, low 22°−6° · Partly cloudy
Tomorrow afternoonUp to 55°13° by 4 PM · Partly cloudy
Tomorrow nightDown to 27°−3° by 5 AM · freezing, low 27°−3° · Mostly cloudy
Monday morningUp to 35°2° by 10 AM · freezing, low 26°−3° · Mostly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 11a	Partly sunny	37°3° (likely 37°3° to 43°6°)	37°3°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	97%	71%	1
Sat 12p	Mostly sunny	41°5° (likely 40°4° to 45°7°)	41°5°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	84%	35%	2
Sat 1p	Mostly sunny	44°7° (likely 43°6° to 48°9°)	44°7°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	76%	15%	3
Sat 2p	Sunny	47°8° (likely 46°8° to 50°10°)	47°8°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	70%	9%	3
Sat 3p	Sunny	49°9° (likely 47°8° to 52°11°)	49°9°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	64%	5%	2
Sat 4p	Sunny	49°9° (likely 48°9° to 52°11°)	49°9°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	60%	1%	1
Sat 5p	Sunny	50°10° (likely 48°9° to 51°11°)	50°10°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	60%	0%	1
Sat 6p	Sunny	48°9° (likely 46°8° to 50°10°)	48°9°	0%	1 mph2 km/h from SSW, gusts 4 mph6 km/h	67%	1%	1
Sat 7p	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	1 mph2 km/h from SSE, gusts 3 mph4 km/h	85%	1%	0
Sat 8p	Mostly clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	1 mph2 km/h from S, gusts 3 mph4 km/h	93%	12%	0
Sat 9p	Clear	32°0° (likely 32°0° to 43°6°)	32°0°	0%	2 mph3 km/h from SE, gusts 2 mph3 km/h	100%	14%	0
Sat 10p	Clear	30°−1° (likely 30°−1° to 43°6°)	30°−1°	0%	1 mph2 km/h from SSE, gusts 2 mph3 km/h	100%	10%	0
Sat 11p	Clear	30°−1° (likely 30°−1° to 42°6°)	30°−1°	0%	1 mph2 km/h from SSE, gusts 2 mph3 km/h	100%	1%	0
Sun 12a	Clear	29°−2° (likely 29°−2° to 42°6°)	29°−2°	0%	1 mph2 km/h from SSE, gusts 2 mph3 km/h	100%	0%	0
Sun 1a	Clear	28°−2° (likely 28°−2° to 41°5°)	28°−2°	0%	1 mph2 km/h from SSE, gusts 2 mph3 km/h	100%	3%	0
Sun 2a	Clear	27°−3° (likely 27°−3° to 40°4°)	27°−3°	0%	1 mph2 km/h from SE, gusts 2 mph3 km/h	100%	1%	0
Sun 3a	Clear	26°−3° (likely 26°−3° to 40°4°)	26°−3°	0%	1 mph2 km/h from SE, gusts 2 mph4 km/h	100%	1%	0
Sun 4a	Clear	25°−4° (likely 25°−4° to 39°4°)	25°−4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	5%	0
Sun 5a	Clear	24°−4° (likely 24°−4° to 39°4°)	24°−4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	7%	0
Sun 6a	Clear	23°−5° (likely 23°−5° to 39°4°)	23°−5°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	10%	0
Sun 7a	Clear	23°−5° (likely 23°−5° to 39°4°)	23°−5°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	8%	0
Sun 8a	Fog	22°−6° (likely 22°−6° to 39°4°)	22°−6°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	46%	0
Sun 9a	Fog	26°−3° (likely 26°−3° to 40°4°)	26°−3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	51%	0
Sun 10a	Sunny	34°1° (likely 34°1° to 43°6°)	34°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	43%	1
Sun 11a	Partly sunny	40°4° (likely 40°4° to 47°8°)	40°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	78%	47%	2
Sun 12p	Mostly sunny	44°7° (likely 44°7° to 51°11°)	44°7°	0%	0 mph0 km/h, gusts 2 mph4 km/h	68%	49%	3
Sun 1p	Mostly sunny	48°9° (likely 48°9° to 54°12°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	61%	51%	3
Sun 2p	Mostly sunny	51°11° (likely 51°11° to 56°13°)	51°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	56%	51%	4
Sun 3p	Mostly sunny	53°12° (likely 53°12° to 58°14°)	53°12°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	52%	67%	3
Sun 4p	Mostly sunny	55°13° (likely 53°12° to 58°14°)	55°13°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	49%	61%	3
Sun 5p	Mostly sunny	53°12° (likely 52°11° to 57°14°)	53°12°	0%	1 mph2 km/h from SE, gusts 3 mph5 km/h	52%	68%	2
Sun 6p	Cloudy	51°11° (likely 50°10° to 55°13°)	51°11°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	60%	75%	1
Sun 7p	Cloudy	45°7° (likely 45°7° to 52°11°)	45°7°	0%	1 mph2 km/h from SE, gusts 2 mph4 km/h	78%	71%	0
Sun 8p	Cloudy	39°4° (likely 39°4° to 51°11°)	39°4°	0%	1 mph2 km/h from SE, gusts 3 mph6 km/h	90%	67%	0
Sun 9p	Cloudy	35°2° (likely 35°2° to 49°9°)	32°0°	0%	3 mph5 km/h from SE, gusts 5 mph8 km/h	96%	77%	0
Sun 10p	Cloudy	33°1° (likely 33°1° to 46°8°)	30°−1°	0%	3 mph5 km/h from SE, gusts 4 mph7 km/h	100%	78%	0
Sun 11p	Cloudy	32°0° (likely 32°0° to 45°7°)	29°−2°	0%	3 mph5 km/h from SE, gusts 4 mph7 km/h	100%	78%	0
Mon 12a	Cloudy	32°0° (likely 32°0° to 44°7°)	29°−2°	0%	3 mph5 km/h from SE, gusts 4 mph6 km/h	100%	77%	0
Mon 1a	Cloudy	31°−1° (likely 31°−1° to 44°7°)	28°−2°	0%	3 mph5 km/h from SE, gusts 4 mph6 km/h	100%	79%	0
Mon 2a	Cloudy	30°−1° (likely 30°−1° to 43°6°)	26°−3°	0%	3 mph5 km/h from SE, gusts 4 mph6 km/h	100%	76%	0
Mon 3a	Cloudy	29°−2° (likely 29°−2° to 42°6°)	25°−4°	0%	3 mph5 km/h from SSE, gusts 4 mph6 km/h	100%	75%	0
Mon 4a	Cloudy	28°−2° (likely 28°−2° to 42°6°)	24°−4°	0%	3 mph5 km/h from SSE, gusts 3 mph5 km/h	100%	73%	0
Mon 5a	Cloudy	27°−3° (likely 27°−3° to 42°6°)	23°−5°	0%	3 mph5 km/h from SSE, gusts 3 mph5 km/h	100%	82%	0
Mon 6a	Clear	27°−3° (likely 27°−3° to 41°5°)	27°−3°	0%	2 mph3 km/h from SSE, gusts 4 mph6 km/h	100%	59%	0
Mon 7a	Mostly cloudy	26°−3° (likely 26°−3° to 43°6°)	26°−3°	0%	2 mph3 km/h from SSE, gusts 4 mph7 km/h	100%	75%	0
Mon 8a	Mostly cloudy	27°−3° (likely 26°−3° to 43°6°)	27°−3°	0%	2 mph3 km/h from SSE, gusts 4 mph6 km/h	100%	66%	0
Mon 9a	Mostly cloudy	29°−2° (likely 28°−2° to 44°7°)	29°−2°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	100%	58%	0
Mon 10a	Mostly cloudy	35°2° (likely 33°1° to 47°8°)	35°2°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	92%	63%	1

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Cloudy. High 51°11°, low 21°−6°. Typical 54°12° / 28°−2°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Sunny, 50°10°
  Dry
2. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 24°−4°
  Dry
Official NWS forecast
Today: Sunny, with a high near 51. South southeast wind around 1 mph.
Tonight: Areas of fog after 9pm. Mostly clear, with a low around 21. South southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–52°11°
Low, likely
21°−6°–38°3°
Typical high / low
54°12° / 28°−2°
Wind
6 mph9 km/h, gusts 16 mph26 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 55°13°, low 25°−4°. Typical 53°12° / 28°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Fog, 22°−6°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 27°−3°
  Dry
Official NWS forecast
Day: Areas of fog before 10am. Sunny, with a high near 55. South southeast wind around 1 mph.
Night: Mostly cloudy, with a low around 25. Southeast wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
53°12°–58°14°
Low, likely
25°−4°–39°4°
Typical high / low
53°12° / 28°−2°
Wind
5 mph8 km/h, gusts 16 mph26 km/h
UV peak
4
Monday, Oct 26. Rain. High 56°13°, low 24°−4°. Typical 52°11° / 28°−2°. Rain 0.16 in4.1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly cloudy, 27°−3°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 57°14°
  40% chance · 0.04 in1.1 mm
3. Evening
  6 PM–midnight
  Showers, 45°7°
  70% chance · 0.1 in0.3 cm
4. Overnight
  midnight–6 AM
  Rain, 38°3°
  70% chance · 0.1 in0.3 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after noon. Mostly sunny, with a high near 56. South southeast wind around 3 mph. Chance of precipitation is 20%.
Night: Rain likely. Mostly cloudy, with a low around 24. Chance of precipitation is 70%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
53°12°–59°15°
Low, likely
24°−4°–38°3°
Typical high / low
52°11° / 28°−2°
Wind
10 mph16 km/h, gusts 30 mph48 km/h
UV peak
3
Tuesday, Oct 27. Snow. High 49°9°, low 20°−7°. Typical 52°11° / 27°−3°. Snow 0–1 in0–3 cm, 60% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Rain, 36°2°
  50% chance · 0.06 in1.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 48°9°
  40% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Clear, 41°5°
  40% chance
4. Overnight
  midnight–6 AM
  Clear, 33°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Snow likely before 9am, then rain and snow likely. Mostly cloudy, with a high near 49. Little or no snow accumulation expected.
Night: A slight chance of rain before midnight. Mostly cloudy, with a low around 20.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
44°7°–50°10°
Low, likely
20°−7°–37°3°
Typical high / low
52°11° / 27°−3°
Wind
6 mph9 km/h, gusts 21 mph33 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 51°11°, low 21°−6°. Typical 51°11° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 40°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 51.
Night: Partly cloudy, with a low around 21.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
46°8°–52°11°
Low, likely
21°−6°–37°3°
Typical high / low
51°11° / 27°−3°
Wind
15 mph24 km/h, gusts 29 mph46 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 52°11°, low 22°−6°. Typical 51°11° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 44°7°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 36°2°
  30% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 52.
Night: A slight chance of rain and snow after midnight. Partly cloudy, with a low around 22.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
48°9°–54°12°
Low, likely
22°−6°–37°3°
Typical high / low
51°11° / 27°−3°
Wind
8 mph13 km/h, gusts 25 mph40 km/h
UV peak
3
Friday, Oct 30. Snow. High 52°11°, low 22°−6°. Typical 50°10° / 26°−3°. Snow 0–2 in0–5 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 36°2°
  30% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 49°9°
  30% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 42°5°
  30% chance · 0.3 in0.7 cm
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  30% chance · 0.1 in0.3 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain and snow. Partly sunny, with a high near 52.
Night: A chance of rain. Partly cloudy, with a low around 22.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
41°5°–53°12°
Low, likely
22°−6°–38°3°
Typical high / low
50°10° / 26°−3°
Wind
10 mph16 km/h, gusts 23 mph37 km/h
UV peak
1
Saturday, Oct 31. Cloudy. High 42°6°, low 29°−2°. Typical 50°10° / 26°−3°. Rain 0.07 in1.8 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Snow, 33°1°
  30% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Sunny, 43°6°
  30% chance · 0.01 in0.3 mm
3. Evening
  6 PM–midnight
  Clear, 35°2°
  20% chance · 0.2 in0.4 cm
4. Overnight
  midnight–6 AM
  Cloudy, 29°−2°
  20% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
38°3°–44°7°
Low, likely
24°−4°–34°1°
Typical high / low
50°10° / 26°−3°
Wind
14 mph23 km/h, gusts 25 mph40 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 43°6°, low 27°−3°. Typical 49°9° / 26°−3°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 29°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 35°2°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 30°−1°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
40°4°–49°9°
Low, likely
25°−4°–31°−1°
Typical high / low
49°9° / 26°−3°
Wind
3 mph5 km/h, gusts 14 mph23 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 43°6°, low 30°−1°. Typical 48°9° / 26°−3°. Rain 0.03 in0.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 38°3°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–45°7°
Low, likely
27°−3°–33°1°
Typical high / low
48°9° / 26°−3°
Wind
5 mph8 km/h, gusts 19 mph31 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 51°, low 21°.
Tomorrow
Dry, high 55°, low 25°, warming up.
Monday
Dry, high 56°, low 24°.
Rest of week
Highs 42–52°; chance of precipitation on Tuesday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (MSO) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Salmon River at Salmon

0.6 mi

Below flood stage

Level: 2.5 ft
Flow: 1,300 cfs

Forecast peak 2.4 ft Sat 12 PM

Reading from Sat 9:45 AM · NWS gauge page

Lemhi River near Lemhi

21 mi

Below flood stage

Level: 4.0 ft
Flow: 222 cfs

Forecast peak 4.0 ft Sat 12 PM

Reading from Sat 10 AM · NWS gauge page

Big Hole River near Jackson

22 mi

Level: 1.2 ft

Reading from Sat 9:45 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Pipes: watch the cold

Tonight’s low: 24°−4°

Overnight low near 24°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.

Heating this week

About 68% less heating than a typical week.

This week 57Typical 178

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 37
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 20 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 34°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Salmon-Ksra · official normals 1991–2020 · records 1905–2026

Oct 24, today vs a typical year

Today’s expected high is 3°2° colder than typical.

Last 7 days vs normal

On average 5°3° warmer than normal (daily mean temperature).

+4°+2°SunOct 18
+4°+2°MonOct 19
+7°+4°TueOct 20
+7°+4°WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Salmon weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 31 min; Losing 2 min 53 s a day; shortest Dec 21, 1 h 47 min less
Golden hour: 5:53–6:53 PM; Morning 7:45–8:45 AM
Blue hour: 6:53–7:05 PM; Morning 7:33–7:45 AM; first light 7:33 AM

Stars tonight? Fair

Clear 7:05 PM–7:34 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:19 AM · rises 5:35 PM
Full moon: Oct 25
New moon: Nov 9

Looking northeast from Salmon. The highest point on the skyline is about 10,200 ft, 12 mi away.Skyline from USGS elevation data, heights drawn up to 3.5× taller. Sky, sun and moon as they are now.