Observed 3:40 PM MDT at KJAC

Alta, WY weather

Mostly sunny and 48°9°.

Mostly agree

Now 48°9°

Mostly sunny · Feels like 45°7°

Wind: 8 mph13 km/h; From the southwest. Up to 8 mph13 km/h through 3 AM
Dew point: 34°1°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 21Good; Main pollutant: Ozone
Pressure: 30.22 inHg1023 hPa; Falling · −0.07 inHg−2.4 hPa in 3 h

Moderate snow now, through the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 40°4° tonight after 8 PM
Below freezing tonight midnight–9 AM (low 29°−2°)
Low 29°−2° tomorrow at 7 AM
Above 40°4° tomorrow by 10 AM
Below freezing Monday 6–8 AM (low 31°−1°)

This afternoonNear 48°9° · Clear
TonightDown to 31°−1° by 4 AM · freezing, low 31°−1° · Clear
Tomorrow morningUp to 45°7° by 11 AM · freezing, low 29°−2° · Clear
Tomorrow afternoonUp to 53°12° by 3 PM · Clear
Tomorrow nightDown to 33°1° by 4 AM · Partly cloudy
Monday morningUp to 45°7° by 11 AM · freezing, low 31°−1° · Mostly cloudy
Monday afternoonNear 51°11° · 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 3p	Partly sunny	47°8° (likely 44°7° to 48°9°)	46°8°	0%	3 mph5 km/h from NW, gusts 3 mph5 km/h	68%	28%	2
Sat 4p	Partly sunny	49°9° (likely 44°7° to 49°9°)	48°9°	0%	3 mph5 km/h from NNW, gusts 4 mph7 km/h	63%	26%	1
Sat 5p	Sunny	48°9° (likely 42°6° to 48°9°)	46°8°	0%	5 mph8 km/h from NNW, gusts 4 mph6 km/h	62%	17%	1
Sat 6p	Clear	45°7° (likely 39°4° to 45°7°)	43°6°	0%	5 mph8 km/h from NNW, gusts 5 mph7 km/h	73%	12%	1
Sat 7p	Clear	41°5° (likely 36°2° to 41°5°)	39°4°	0%	3 mph5 km/h from ENE, gusts 5 mph9 km/h	86%	9%	0
Sat 8p	Clear	36°2° (likely 33°1° to 38°3°)	32°0°	0%	5 mph8 km/h from E, gusts 2 mph4 km/h	94%	5%	0
Sat 9p	Clear	35°2° (likely 31°−1° to 37°3°)	30°−1°	0%	6 mph10 km/h from ESE, gusts 4 mph7 km/h	94%	2%	0
Sat 10p	Clear	33°1° (likely 30°−1° to 36°2°)	28°−2°	0%	6 mph10 km/h from ESE, gusts 2 mph4 km/h	96%	0%	0
Sat 11p	Clear	33°1° (likely 30°−1° to 35°2°)	28°−2°	0%	6 mph10 km/h from E, gusts 3 mph4 km/h	94%	0%	0
Sun 12a	Clear	32°0° (likely 29°−2° to 36°2°)	27°−3°	0%	5 mph8 km/h from ESE, gusts 2 mph4 km/h	92%	0%	0
Sun 1a	Clear	32°0° (likely 29°−2° to 36°2°)	29°−2°	0%	3 mph5 km/h from ESE, gusts 3 mph4 km/h	89%	0%	0
Sun 2a	Clear	32°0° (likely 29°−2° to 36°2°)	29°−2°	0%	3 mph5 km/h from ESE, gusts 3 mph4 km/h	84%	0%	0
Sun 3a	Clear	32°0° (likely 29°−2° to 36°2°)	32°0°	0%	2 mph3 km/h from E, gusts 3 mph5 km/h	83%	0%	0
Sun 4a	Clear	31°−1° (likely 29°−2° to 36°2°)	31°−1°	0%	2 mph3 km/h from ESE, gusts 3 mph4 km/h	82%	0%	0
Sun 5a	Clear	31°−1° (likely 29°−2° to 36°2°)	31°−1°	0%	1 mph2 km/h from E, gusts 3 mph4 km/h	80%	0%	0
Sun 6a	Clear	30°−1° (likely 28°−2° to 36°2°)	30°−1°	0%	2 mph3 km/h from ESE, gusts 3 mph4 km/h	81%	0%	0
Sun 7a	Clear	29°−2° (likely 28°−2° to 36°2°)	29°−2°	0%	2 mph3 km/h from ESE, gusts 3 mph4 km/h	81%	0%	0
Sun 8a	Sunny	30°−1° (likely 28°−2° to 36°2°)	30°−1°	0%	2 mph3 km/h from SE, gusts 3 mph5 km/h	83%	0%	0
Sun 9a	Sunny	34°1° (likely 31°−1° to 37°3°)	34°1°	0%	2 mph3 km/h from SE, gusts 2 mph4 km/h	85%	0%	0
Sun 10a	Sunny	40°4° (likely 38°3° to 42°6°)	40°4°	0%	1 mph2 km/h from SW, gusts 3 mph4 km/h	73%	0%	1
Sun 11a	Sunny	45°7° (likely 43°6° to 46°8°)	45°7°	0%	2 mph3 km/h from SW, gusts 3 mph4 km/h	63%	0%	3
Sun 12p	Sunny	49°9° (likely 46°8° to 49°9°)	49°9°	0%	2 mph3 km/h from W, gusts 3 mph6 km/h	58%	0%	4
Sun 1p	Sunny	51°11° (likely 48°9° to 52°11°)	51°11°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	55%	0%	4
Sun 2p	Sunny	52°11° (likely 49°9° to 53°12°)	52°11°	0%	2 mph3 km/h from WNW, gusts 6 mph9 km/h	51%	1%	4
Sun 3p	Sunny	53°12° (likely 49°9° to 54°12°)	53°12°	0%	2 mph3 km/h from WNW, gusts 7 mph11 km/h	51%	2%	4
Sun 4p	Sunny	52°11° (likely 48°9° to 54°12°)	52°11°	0%	2 mph3 km/h from WNW, gusts 7 mph11 km/h	53%	2%	3
Sun 5p	Sunny	51°11° (likely 45°7° to 53°12°)	51°11°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	56%	9%	2
Sun 6p	Clear	47°8° (likely 42°6° to 49°9°)	46°8°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	68%	8%	1
Sun 7p	Clear	41°5° (likely 38°3° to 43°6°)	39°4°	0%	3 mph5 km/h from NNE, gusts 8 mph12 km/h	82%	6%	0
Sun 8p	Clear	38°3° (likely 36°2° to 41°5°)	36°2°	0%	3 mph5 km/h from E, gusts 4 mph6 km/h	91%	6%	0
Sun 9p	Clear	37°3° (likely 35°2° to 40°4°)	33°1°	0%	5 mph8 km/h from E, gusts 2 mph4 km/h	92%	18%	0
Sun 10p	Partly cloudy	35°2° (likely 34°1° to 40°4°)	31°−1°	0%	5 mph8 km/h from E, gusts 3 mph5 km/h	96%	59%	0
Sun 11p	Partly cloudy	35°2° (likely 34°1° to 40°4°)	31°−1°	0%	5 mph8 km/h from ESE, gusts 3 mph4 km/h	95%	47%	0
Mon 12a	Partly cloudy	35°2° (likely 34°1° to 41°5°)	31°−1°	0%	5 mph8 km/h from ESE, gusts 4 mph6 km/h	94%	58%	0
Mon 1a	Partly cloudy	34°1° (likely 34°1° to 39°4°)	30°−1°	0%	5 mph8 km/h from ESE, gusts 3 mph5 km/h	94%	62%	0
Mon 2a	Partly cloudy	35°2° (likely 34°1° to 40°4°)	31°−1°	0%	5 mph8 km/h from ESE, gusts 4 mph6 km/h	93%	64%	0
Mon 3a	Partly cloudy	34°1° (likely 34°1° to 39°4°)	30°−1°	0%	5 mph8 km/h from ESE, gusts 4 mph6 km/h	94%	58%	0
Mon 4a	Partly cloudy	33°1° (likely 33°1° to 39°4°)	30°−1°	0%	3 mph5 km/h from ESE, gusts 5 mph9 km/h	95%	63%	0
Mon 5a	Mostly cloudy	33°1° (likely 32°0° to 39°4°)	30°−1°	0%	3 mph5 km/h from ESE, gusts 5 mph9 km/h	96%	66%	0
Mon 6a	Partly cloudy	31°−1° (likely 31°−1° to 39°4°)	28°−2°	0%	3 mph5 km/h from ESE, gusts 5 mph8 km/h	99%	67%	0
Mon 7a	Mostly cloudy	32°0° (likely 32°0° to 39°4°)	29°−2°	0%	3 mph5 km/h from SE, gusts 5 mph8 km/h	100%	60%	0
Mon 8a	Mostly cloudy	33°1° (likely 33°1° to 39°4°)	30°−1°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	99%	64%	0
Mon 9a	Partly sunny	36°2° (likely 36°2° to 39°4°)	32°0°	0%	5 mph8 km/h from SE, gusts 4 mph7 km/h	96%	69%	0
Mon 10a	Partly sunny	40°4° (likely 40°4° to 45°7°)	37°3°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	88%	70%	1
Mon 11a	Partly sunny	45°7° (likely 45°7° to 49°9°)	43°6°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	79%	71%	2
Mon 12p	Partly sunny	49°9° (likely 48°9° to 51°11°)	47°8°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	69%	44%	3
Mon 1p	Partly sunny	51°11° (likely 50°10° to 52°11°)	51°11°	0%	6 mph10 km/h from S, gusts 14 mph22 km/h	61%	51%	4
Mon 2p	Partly sunny	52°11° (likely 51°11° to 53°12°)	52°11°	0%	7 mph11 km/h from SSW, gusts 15 mph24 km/h	56%	49%	4

Days ahead

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

Today, Oct 24. Mostly sunny. High 49°9°, low 28°−2°. Typical 54°12° / 26°−3°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Partly sunny, 49°9°
  Dry
2. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 31°−1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 49. North northwest wind around 5 mph.
Tonight: Mostly clear. Low around 28, with temperatures rising to around 31 overnight. East wind 1 to 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
45°7°–49°9°
Low, likely
28°−2°–32°0°
Typical high / low
54°12° / 26°−3°
Wind
6 mph9 km/h, gusts 11 mph18 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 53°12°, low 30°−1°. Typical 54°12° / 26°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 38°3°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 33°1°
  Dry
Official NWS forecast
Day: Sunny, with a high near 53. West southwest wind around 2 mph.
Night: Partly cloudy, with a low around 30. East wind around 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
49°9°–54°12°
Low, likely
28°−2°–35°2°
Typical high / low
54°12° / 26°−3°
Wind
5 mph8 km/h, gusts 10 mph16 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 52°11°, low 29°−2°. Typical 53°12° / 26°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 42°6°
  60% chance · 0.2 in0.4 cm
4. Overnight
  midnight–6 AM
  Snow, 32°0°
  80% chance · 0.5 in1.2 cm
Official NWS forecast
Day: Mostly sunny, with a high near 52. South southeast wind 3 to 7 mph.
Night: A chance of rain showers before 9pm, then rain and snow showers. Mostly cloudy, with a low around 29. South wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of less than half an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
48°9°–53°12°
Low, likely
29°−2°–38°3°
Typical high / low
53°12° / 26°−3°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
4
Tuesday, Oct 27. Snow. High 40°4°, low 26°−3°. Typical 53°12° / 25°−4°. Snow 0–4 in0–10 cm, 70% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 31°−1°
  70% chance · 0.6 in1.5 cm
2. Afternoon
  noon–6 PM
  Snow, 37°3°
  60% chance · 0.1 in0.3 cm
3. Evening
  6 PM–midnight
  Snow, 32°0°
  50% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Cloudy, 31°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Snow showers likely. Mostly cloudy, with a high near 40. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Night: A slight chance of snow showers before midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
34°1°–41°5°
Low, likely
25°−4°–31°−1°
Typical high / low
53°12° / 25°−4°
Wind
20 mph33 km/h, gusts 31 mph50 km/h
UV peak
2
Wednesday, Oct 28. Cloudy. High 47°8°, low 30°−1°. Typical 52°11° / 25°−4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 31°−1°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 44°6°
  Dry
3. Evening
  6 PM–midnight
  Clear, 35°1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 47.
Night: A slight chance of snow showers after midnight. Partly cloudy, with a low around 30.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
40°4°–47°8°
Low, likely
24°−4°–31°−1°
Typical high / low
52°11° / 25°−4°
Wind
10 mph16 km/h, gusts 19 mph31 km/h
UV peak
4
Thursday, Oct 29. Snow. High 50°10°, low 32°0°. Typical 52°11° / 25°−4°. Snow 0–3 in0–8 cm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 37°3°
  40% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Cloudy, 46°8°
  50% chance · 0.2 in0.4 cm
3. Evening
  6 PM–midnight
  Cloudy, 39°4°
  50% chance · 0.5 in1.2 cm
4. Overnight
  midnight–6 AM
  Snow, 36°2°
  50% chance · 0.2 in0.6 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow showers before noon, then a chance of rain showers. Partly sunny, with a high near 50.
Night: A slight chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 32.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–50°10°
Low, likely
29°−2°–38°3°
Typical high / low
52°11° / 25°−4°
Wind
12 mph20 km/h, gusts 32 mph51 km/h
UV peak
3
Friday, Oct 30. Snow. High 48°9°, low 30°−1°. Typical 51°11° / 24°−4°. Snow 0–3 in0–8 cm, 60% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 37°3°
  60% chance · 0.09 in2.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 42°6°
  50% chance · 0.11 in2.8 mm
3. Evening
  6 PM–midnight
  Snow, 36°2°
  50% chance · 0.4 in1 cm
4. Overnight
  midnight–6 AM
  Snow, 33°0°
  40% chance · 0.2 in0.6 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain and snow showers likely. Mostly cloudy, with a high near 48.
Night: Rain and snow showers likely. Mostly cloudy, with a low around 30. Little or no snow accumulation expected.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–48°9°
Low, likely
30°−1°–36°2°
Typical high / low
51°11° / 24°−4°
Wind
10 mph16 km/h, gusts 31 mph49 km/h
UV peak
2
Saturday, Oct 31. Snow. High 36°2°, low 28°−2°. Typical 51°11° / 24°−4°. Snow 0–2 in0–5 cm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 32°0°
  40% chance · 0.02 in0.6 mm
2. Afternoon
  noon–6 PM
  Snow, 35°2°
  40% chance · 0.1 in0.3 cm
3. Evening
  6 PM–midnight
  Clear, 30°−1°
  30% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Clear, 25°−4°
  20% chance · 0.2 in0.5 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
33°1°–41°5°
Low, likely
22°−6°–37°3°
Typical high / low
51°11° / 24°−4°
Wind
9 mph15 km/h, gusts 22 mph35 km/h
UV peak
3
Sunday, Nov 1. Snow. High 35°2°, low 24°−4°. Typical 50°10° / 24°−4°. Snow 0–1 in0–3 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 26°−3°
  20% chance · 0.1 in0.3 cm
2. Afternoon
  noon–6 PM
  Snow, 35°2°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 29°−2°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 27°−3°
  20% 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
31°−1°–38°3°
Low, likely
17°−8°–32°0°
Typical high / low
50°10° / 24°−4°
Wind
9 mph15 km/h, gusts 27 mph44 km/h
UV peak
4
Monday, Nov 2. Snow. High 37°3°, low 24°−4°. Typical 50°10° / 23°−5°. Snow 0–1 in0–3 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 30°−1°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 38°3°
  30% chance · 0.03 in0.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 32°0°
  30% chance · 0.1 in0.4 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
31°−1°–45°7°
Low, likely
22°−6°–26°−3°
Typical high / low
50°10° / 23°−5°
Wind
8 mph12 km/h, gusts 27 mph43 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 49°, low 28°.
Tomorrow
Dry, high 53°, low 30°, warming up.
Monday
Dry, high 52°, low 29°.
Rest of week
Highs 35–50°; chance of precipitation on Tuesday, Friday, Saturday.

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

Teton River (ID) near Driggs

8.9 mi

Below flood stage

Level: 2.1 ft
Flow: 296 cfs

Forecast peak 2.1 ft Sat 6 PM

Reading from Sat 2:45 PM · NWS gauge page

Granite Creek (WY) near Moose

16 mi

Below flood stage

Level: 3.8 ft
Flow: under 1 cfs

Reading from Sat 2 PM · NWS gauge page

Fish Creek (WY) at Wilson

21 mi

Below flood stage

Level: 2.4 ft
Flow: 135 cfs

Reading from Sat 2 PM · NWS gauge page

Fall River (WY-ID) above Yellowstone Canal near Squirrel

21 mi

Level: 5.6 ft
Flow: 543 cfs

Reading from Sat 1:45 PM · NWS gauge page

For your home

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

Heating this week

About 72% less heating than a typical week.

This week 51Typical 182

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 36
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 31 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?

Driggs · official normals 1991–2020 · records 1904–2026

Oct 24, today vs a typical year

Today’s expected high is 5°3° colder than typical.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 36 min; Losing 2 min 49 s a day; shortest Dec 21, 1 h 41 min less
Golden hour: 5:45–6:44 PM; Morning 7:31–8:30 AM
Blue hour: 6:44–6:55 PM; Morning 7:20–7:31 AM; first light 7:20 AM

Stars tonight? Fair

Clear 6:55 PM–7:21 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:06 AM · rises 5:26 PM
Full moon: Oct 25
New moon: Nov 9

Looking east from Alta. The highest point on the skyline is about 13,200 ft, 12 mi away.Skyline from USGS elevation data, heights drawn up to 3× taller. Sky, sun and moon as they are now.

Alta, WY weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Teton River (ID) near Driggs

Granite Creek (WY) near Moose

Fish Creek (WY) at Wilson

Fall River (WY-ID) above Yellowstone Canal near Squirrel

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