Observed 3:40 PM MDT at KDIJ

Swan Valley, ID weather

Sunny and 48°9°.

Forecasts differ

Now 48°9°

Sunny

Wind: 3 mph5 km/h; From the west-northwest. Up to 5 mph8 km/h through 4 AM
Dew point: 36°2°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Pressure: 30.24 inHg1024 hPa; Falling · −0.07 inHg−2.4 hPa in 3 h

Light snow now, through the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 40°4° tonight after 9 PM
Below freezing tonight 3–10 AM (low 29°−2°)
Low 29°−2° tomorrow at 7 AM
Above 40°4° tomorrow by 11 AM

This afternoonNear 51°11° · Clear
TonightDown to 30°−1° by 5 AM · freezing, low 30°−1° · Clear
Tomorrow morningUp to 43°6° by 11 AM · freezing, low 29°−2° · Clear
Tomorrow afternoonUp to 56°13° by 3 PM · Clear
Tomorrow nightDown to 34°1° by 5 AM · Partly cloudy
Monday morningUp to 45°7° by 11 AM · freezing, low 32°0° · Mostly cloudy
Monday afternoonUp to 56°13° by 3 PM · Partly 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 4p	Sunny	51°11° (likely 49°9° to 54°12°)	51°11°	0%	0 mph0 km/h, gusts 6 mph10 km/h	61%	24%	1
Sat 5p	Mostly sunny	51°11° (likely 48°9° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 7 mph12 km/h	63%	17%	1
Sat 6p	Clear	48°9° (likely 45°7° to 51°11°)	48°9°	0%	2 mph3 km/h from N, gusts 8 mph13 km/h	73%	42%	1
Sat 7p	Clear	44°7° (likely 41°5° to 47°8°)	44°7°	0%	2 mph3 km/h from N, gusts 8 mph13 km/h	85%	25%	0
Sat 8p	Clear	40°4° (likely 37°3° to 43°6°)	40°4°	0%	2 mph3 km/h from NE, gusts 5 mph8 km/h	89%	3%	0
Sat 9p	Clear	38°3° (likely 34°1° to 41°5°)	36°2°	0%	3 mph5 km/h from NE, gusts 3 mph5 km/h	94%	11%	0
Sat 10p	Clear	36°2° (likely 32°0° to 40°4°)	33°1°	0%	3 mph5 km/h from ENE, gusts 3 mph5 km/h	97%	12%	0
Sat 11p	Clear	35°2° (likely 31°−1° to 39°4°)	32°0°	0%	3 mph5 km/h from E, gusts 2 mph4 km/h	100%	12%	0
Sun 12a	Clear	34°1° (likely 30°−1° to 38°3°)	31°−1°	0%	3 mph5 km/h from ENE, gusts 2 mph4 km/h	100%	13%	0
Sun 1a	Clear	34°1° (likely 30°−1° to 37°3°)	31°−1°	0%	3 mph5 km/h from ENE, gusts 3 mph4 km/h	100%	13%	0
Sun 2a	Clear	33°1° (likely 30°−1° to 37°3°)	30°−1°	0%	3 mph5 km/h from ENE, gusts 2 mph4 km/h	100%	12%	0
Sun 3a	Clear	32°0° (likely 29°−2° to 36°2°)	27°−3°	0%	5 mph8 km/h from ENE, gusts 2 mph4 km/h	100%	11%	0
Sun 4a	Clear	31°−1° (likely 29°−2° to 36°2°)	26°−3°	0%	5 mph8 km/h from ENE, gusts 2 mph4 km/h	100%	10%	0
Sun 5a	Clear	30°−1° (likely 29°−2° to 35°2°)	25°−4°	0%	5 mph8 km/h from ENE, gusts 3 mph5 km/h	100%	14%	0
Sun 6a	Clear	30°−1° (likely 29°−2° to 36°2°)	25°−4°	0%	5 mph8 km/h from ENE, gusts 3 mph4 km/h	100%	9%	0
Sun 7a	Clear	29°−2° (likely 29°−2° to 36°2°)	24°−4°	0%	5 mph8 km/h from ENE, gusts 2 mph4 km/h	100%	9%	0
Sun 8a	Sunny	30°−1° (likely 29°−2° to 36°2°)	24°−4°	0%	6 mph10 km/h from E, gusts 3 mph4 km/h	100%	9%	0
Sun 9a	Sunny	31°−1° (likely 31°−1° to 38°3°)	24°−4°	0%	8 mph13 km/h from E, gusts 3 mph4 km/h	100%	8%	0
Sun 10a	Sunny	36°2° (likely 36°2° to 43°6°)	32°0°	0%	5 mph8 km/h from SE, gusts 4 mph6 km/h	97%	0%	1
Sun 11a	Sunny	43°6° (likely 43°6° to 49°9°)	43°6°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	83%	0%	3
Sun 12p	Sunny	49°9° (likely 48°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	66%	1%	4
Sun 1p	Sunny	53°12° (likely 51°11° to 56°13°)	53°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	59%	1%	4
Sun 2p	Sunny	54°12° (likely 53°12° to 58°14°)	54°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	54%	1%	4
Sun 3p	Sunny	56°13° (likely 54°12° to 59°15°)	56°13°	0%	0 mph0 km/h, gusts 5 mph9 km/h	52%	2%	4
Sun 4p	Sunny	56°13° (likely 54°12° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 5 mph9 km/h	52%	6%	3
Sun 5p	Sunny	54°12° (likely 52°11° to 57°14°)	54°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	57%	11%	2
Sun 6p	Clear	51°11° (likely 48°9° to 54°12°)	51°11°	0%	1 mph2 km/h from WNW, gusts 9 mph14 km/h	68%	6%	1
Sun 7p	Clear	46°8° (likely 44°7° to 50°10°)	46°8°	0%	1 mph2 km/h from WNW, gusts 8 mph13 km/h	81%	16%	0
Sun 8p	Clear	42°6° (likely 40°4° to 48°9°)	42°6°	0%	1 mph2 km/h from WNW, gusts 3 mph5 km/h	86%	15%	0
Sun 9p	Clear	41°5° (likely 38°3° to 46°8°)	39°4°	0%	3 mph5 km/h from ESE, gusts 3 mph4 km/h	89%	7%	0
Sun 10p	Partly cloudy	39°4° (likely 36°2° to 44°7°)	37°3°	0%	3 mph5 km/h from ESE, gusts 3 mph4 km/h	95%	45%	0
Sun 11p	Partly cloudy	37°3° (likely 35°2° to 43°6°)	34°1°	0%	3 mph5 km/h from ESE, gusts 3 mph4 km/h	100%	52%	0
Mon 12a	Partly cloudy	37°3° (likely 35°2° to 43°6°)	33°1°	0%	5 mph8 km/h from ESE, gusts 2 mph4 km/h	100%	58%	0
Mon 1a	Partly cloudy	37°3° (likely 35°2° to 43°6°)	33°1°	0%	5 mph8 km/h from ESE, gusts 3 mph5 km/h	100%	63%	0
Mon 2a	Partly cloudy	36°2° (likely 36°2° to 42°6°)	32°0°	0%	5 mph8 km/h from ESE, gusts 3 mph5 km/h	100%	64%	0
Mon 3a	Partly cloudy	35°2° (likely 35°2° to 41°5°)	30°−1°	0%	6 mph10 km/h from SE, gusts 3 mph6 km/h	100%	51%	0
Mon 4a	Partly cloudy	35°2° (likely 35°2° to 41°5°)	30°−1°	0%	6 mph10 km/h from SE, gusts 4 mph6 km/h	100%	53%	0
Mon 5a	Cloudy	34°1° (likely 34°1° to 41°5°)	29°−2°	0%	6 mph10 km/h from SE, gusts 5 mph8 km/h	100%	66%	0
Mon 6a	Partly cloudy	32°0° (likely 32°0° to 40°4°)	24°−4°	0%	9 mph14 km/h from SE, gusts 5 mph8 km/h	100%	57%	0
Mon 7a	Partly cloudy	34°1° (likely 34°1° to 41°5°)	27°−3°	0%	9 mph14 km/h from SE, gusts 5 mph9 km/h	100%	64%	0
Mon 8a	Partly sunny	34°1° (likely 34°1° to 41°5°)	27°−3°	0%	9 mph14 km/h from SE, gusts 6 mph9 km/h	100%	68%	0
Mon 9a	Partly sunny	35°2° (likely 35°2° to 43°6°)	25°−4°	0%	15 mph24 km/h from SE, gusts 11 mph18 km/h	100%	70%	0
Mon 10a	Partly sunny	39°4° (likely 39°4° to 47°8°)	31°−1°	0%	15 mph24 km/h from SE, gusts 12 mph19 km/h	93%	72%	1
Mon 11a	Partly sunny	45°7° (likely 45°7° to 52°11°)	38°3°	0%	15 mph24 km/h from SE, gusts 13 mph21 km/h	82%	60%	2
Mon 12p	Partly sunny	50°10° (likely 50°10° to 55°13°)	45°7°	0%	13 mph21 km/h from S, gusts 15 mph24 km/h	72%	37%	3
Mon 1p	Partly sunny	53°12° (likely 53°12° to 57°14°)	53°12°	0%	13 mph21 km/h from S, gusts 15 mph24 km/h	63%	57%	4
Mon 2p	Partly sunny	55°13° (likely 55°13° to 59°15°)	55°13°	0%	13 mph21 km/h from S, gusts 15 mph25 km/h	57%	56%	4
Mon 3p	Partly sunny	56°13° (likely 56°13° to 59°15°)	56°13°	0%	8 mph13 km/h from S, gusts 16 mph26 km/h	53%	38%	4

Days ahead

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

Today, Oct 24. Mostly sunny. High 51°11°, low 28°−2°. Typical 55°13° / 26°−3°. Dry. Forecasts differ.
1. Afternoon
  noon–6 PM
  Mostly sunny, 51°11°
  Dry
2. Evening
  6 PM–midnight
  Clear, 40°4°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 30°−1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 51. Wind around 0 mph.
Tonight: Mostly clear. Low around 28, with temperatures rising to around 30 overnight. Northeast wind around 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–55°13°
Low, likely
28°−2°–38°3°
Typical high / low
55°13° / 26°−3°
Wind
9 mph15 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 56°13°, low 31°−1°. Typical 54°12° / 26°−3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 42°6°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 34°1°
  Dry
Official NWS forecast
Day: Sunny. High near 56, with temperatures falling to around 54 in the afternoon. Northeast wind 0 to 8 mph.
Night: Partly cloudy, with a low around 31. Southeast wind 1 to 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
55°13°–59°15°
Low, likely
29°−2°–35°2°
Typical high / low
54°12° / 26°−3°
Wind
9 mph15 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 56°13°, low 30°−1°. Typical 54°12° / 26°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 46°8°
  60% chance · 0.2 in0.4 cm
4. Overnight
  midnight–6 AM
  Rain, 37°3°
  70% chance · 0.2 in0.5 cm
Official NWS forecast
Day: Mostly sunny, with a high near 56. South southeast wind 8 to 15 mph, with gusts as high as 26 mph.
Night: A chance of rain before midnight, then rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 80%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–58°14°
Low, likely
30°−1°–39°4°
Typical high / low
54°12° / 26°−3°
Wind
11 mph17 km/h, gusts 27 mph43 km/h
UV peak
4
Tuesday, Oct 27. Snow. High 44°7°, low 26°−3°. Typical 53°12° / 25°−4°. Snow 0–2 in0–5 cm, 60% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 36°2°
  50% chance · 0.1 in0.3 cm
2. Afternoon
  noon–6 PM
  Drizzle, 43°6°
  40% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain and snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%. New snow accumulation of less than half an inch possible.
Night: Mostly cloudy, with a low around 26.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
40°4°–45°7°
Low, likely
26°−3°–35°2°
Typical high / low
53°12° / 25°−4°
Wind
14 mph22 km/h, gusts 30 mph49 km/h
UV peak
3
Wednesday, Oct 28. Cloudy. High 50°10°, low 30°−1°. Typical 53°12° / 25°−4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 33°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 38°3°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 36°2°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 50.
Night: A slight chance of rain after midnight. Partly cloudy, with a low around 30. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
46°8°–52°11°
Low, likely
27°−3°–33°1°
Typical high / low
53°12° / 25°−4°
Wind
10 mph15 km/h, gusts 22 mph35 km/h
UV peak
4
Thursday, Oct 29. Rain. High 52°11°, low 33°1°. Typical 52°11° / 25°−4°. Rain 0.06 in1.5 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 39°4°
  30% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 51°11°
  40% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 43°6°
  40% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 39°4°
  40% chance · 0.05 in1.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 52. Chance of precipitation is 30%.
Night: A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–53°12°
Low, likely
31°−1°–39°4°
Typical high / low
52°11° / 25°−4°
Wind
12 mph19 km/h, gusts 30 mph48 km/h
UV peak
3
Friday, Oct 30. Snow. High 50°10°, low 30°−1°. Typical 52°11° / 25°−4°. Snow 0–2 in0–5 cm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 40°5°
  50% chance · 0.09 in2.2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 48°9°
  50% chance · 0.12 in3 mm
3. Evening
  6 PM–midnight
  Drizzle, 40°5°
  50% chance · 0.3 in0.7 cm
4. Overnight
  midnight–6 AM
  Drizzle, 36°2°
  40% chance · 0.04 in1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain and snow. Mostly cloudy, with a high near 50. Chance of precipitation is 50%.
Night: A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
43°6°–54°12°
Low, likely
30°−1°–37°3°
Typical high / low
52°11° / 25°−4°
Wind
10 mph15 km/h, gusts 26 mph41 km/h
UV peak
2
Saturday, Oct 31. Drizzle. High 40°4°, low 30°−1°. Typical 51°11° / 24°−4°. Rain 0.15 in3.8 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 35°2°
  40% chance · 0.04 in0.9 mm
2. Afternoon
  noon–6 PM
  Cloudy, 39°4°
  30% chance · 0.03 in0.7 mm
3. Evening
  6 PM–midnight
  Clear, 33°0°
  30% chance
4. Overnight
  midnight–6 AM
  Mostly clear, 27°−3°
  20% chance · 0.4 in1 cm
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
37°3°–44°7°
Low, likely
24°−4°–41°5°
Typical high / low
51°11° / 24°−4°
Wind
8 mph13 km/h, gusts 19 mph31 km/h
UV peak
3
Sunday, Nov 1. Mostly sunny. High 40°4°, low 27°−3°. Typical 51°11° / 24°−4°. Rain 0.14 in3.6 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 28°−2°
  20% chance · 0.1 in0.3 cm
2. Afternoon
  noon–6 PM
  Sunny, 41°5°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 33°0°
  20% chance · 0.02 in0.5 mm
4. Overnight
  midnight–6 AM
  Clear, 29°−2°
  20% chance · 0.1 in0.3 cm
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
37°3°–44°7°
Low, likely
16°−9°–37°3°
Typical high / low
51°11° / 24°−4°
Wind
7 mph11 km/h, gusts 22 mph35 km/h
UV peak
4
Monday, Nov 2. Drizzle. High 41°5°, low 26°−3°. Typical 50°10° / 24°−4°. Rain 0.07 in1.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 33°0°
  20% chance
2. Afternoon
  noon–6 PM
  Drizzle, 42°5°
  20% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Drizzle, 36°2°
  30% chance · 0.02 in0.5 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
36°2°–47°8°
Low, likely
24°−4°–29°−2°
Typical high / low
50°10° / 24°−4°
Wind
6 mph9 km/h, gusts 25 mph40 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 51°, low 28°.
Tomorrow
Dry, high 56°, low 31°, warming up.
Monday
Dry, high 56°, low 30°.
Rest of week
Highs 40–52°; chance of precipitation on Tuesday, Friday, Saturday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (PIH) (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

Snake River near Irwin

8.4 mi

Below flood stage

Level: 4.8 ft
Flow: 1,420 cfs

Forecast peak 4.8 ft Sat 6 PM

Reading from Sat 2:30 PM · NWS gauge page

Eastern Idaho Reservoirs at Palisades

9.8 mi

Below flood stage

Level: 5517 ft

Forecast peak 5521 ft Tue 5 AM

Reading from Sat 2:30 PM · NWS gauge page

Snake River near Heise

21 mi

Below flood stage

Level: 2.0 ft
Flow: 2,020 cfs

Forecast peak 2.0 ft Sat 6 PM

Reading from Sat 2:30 PM · NWS gauge page

Eastern Idaho Reservoirs at Ririe Dam

23 mi

Below flood stage

Level: 5064 ft

Forecast peak 5065 ft Tue 5 AM

Reading from Sat 2:30 PM · NWS gauge page

For your home

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

Heating this week

About 73% less heating than a typical week.

This week 48Typical 180

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 34
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 30 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°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?

Swan Valley · official normals 1991–2020 · records 1960–2026

Oct 24, today vs a typical year

Today’s expected high is 4°2° colder than typical.

Last 7 days vs normal

On average 11°6° warmer than normal (daily mean temperature).

+8°+4°SunOct 18
+9°+5°MonOct 19
+11°+6°TueOct 20
+15°+8°WedOct 21
+16°+9°ThuOct 22
+14°+8°FriOct 23
+3°+2°SatOct 24

Swan Valley weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 37 min; Losing 2 min 49 s a day; shortest Dec 21, 1 h 40 min less
Golden hour: 5:47–6:45 PM; Morning 7:32–8:30 AM
Blue hour: 6:45–6:56 PM; Morning 7:21–7:32 AM; first light 7:21 AM

Stars tonight? Fair

Mostly clear 7 PM–7:22 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:07 AM · rises 5:27 PM
Full moon: Oct 25
New moon: Nov 9

Looking east from Swan Valley. The highest point on the skyline is about 9,900 ft, 33 mi away.Skyline from USGS elevation data, heights drawn up to 2.5× taller. Sky, sun and moon as they are now.

Swan Valley, ID weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Snake River near Irwin

Eastern Idaho Reservoirs at Palisades

Snake River near Heise

Eastern Idaho Reservoirs at Ririe Dam

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon