Big Lost River near Arco
2.3 mi- Level
- 2.0 ft
Reading from Sat 8 AM · NWS gauge page
Observed 8:55 AM MDT at KSUN
Butte City, ID weather
Overcast and 37°3°.
Today: low 30°−1° (likely 26°−3° to 34°1°), high 51°11° (likely 45°7° to 51°11°).
Now 37°3°
Cloudy · Feels like 34°1°
- Wind
- 5 mph8 km/h
- From the west. 35–6 mph10 km/h through 10 PM
- Dew point
- 34°1°
- Dry, static shocks likely
- UV index
- 1Low
- Moderate 12–5 PM · peak 4
- Air quality
- 21Good
- Main pollutant: Ozone
- Pressure
- 30.33 inHg1027 hPa
- Falling slowly · −0.03 inHg−1.0 hPa in 3 h
Next 2 hours
None rain now, through the next 2 hours.
From forecast models
Next 48 hours
Good hours for
This morningUp to 40°4° by 11 AM · Partly cloudy
This afternoonUp to 51°11° by 4 PM · Clear
TonightDown to 31°−1° by 5 AM · freezing, low 31°−1° · Clear
Tomorrow morningUp to 44°7° by 11 AM · freezing, low 30°−1° · Clear
Tomorrow afternoonUp to 55°13° by 4 PM · Clear
Tomorrow nightDown to 33°1° by 4 AM · Mostly cloudy
Monday morningNear 34°1° · freezing, low 32°0° · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 10a | Mostly sunny | 36°2° (likely 32°0° to 38°3°) | 33°1° | 0% | 3 mph5 km/h from N, gusts 4 mph6 km/h | 85% | 42% | 1 |
| Sat 11a | Sunny | 40°4° (likely 36°2° to 41°5°) | 38°3° | 0% | 3 mph5 km/h from WNW, gusts 4 mph6 km/h | 77% | 23% | 2 |
| Sat 12p | Sunny | 43°6° (likely 40°4° to 43°6°) | 41°5° | 0% | 3 mph5 km/h from ESE, gusts 5 mph8 km/h | 70% | 12% | 3 |
| Sat 1p | Sunny | 47°8° (likely 42°6° to 47°8°) | 46°8° | 0% | 3 mph5 km/h from E, gusts 4 mph7 km/h | 61% | 20% | 4 |
| Sat 2p | Sunny | 49°9° (likely 44°7° to 49°9°) | 47°8° | 0% | 5 mph8 km/h from E, gusts 6 mph10 km/h | 56% | 18% | 4 |
| Sat 3p | Sunny | 49°9° (likely 45°7° to 49°9°) | 47°8° | 0% | 5 mph8 km/h from E, gusts 7 mph11 km/h | 52% | 16% | 4 |
| Sat 4p | Sunny | 51°11° (likely 45°7° to 51°11°) | 51°11° | 0% | 6 mph10 km/h from E, gusts 5 mph9 km/h | 52% | 19% | 3 |
| Sat 5p | Sunny | 49°9° (likely 45°7° to 49°9°) | 47°8° | 0% | 5 mph8 km/h from E, gusts 6 mph9 km/h | 52% | 5% | 2 |
| Sat 6p | Sunny | 49°9° (likely 43°6° to 49°9°) | 47°8° | 0% | 5 mph8 km/h from E, gusts 6 mph10 km/h | 58% | 0% | 1 |
| Sat 7p | Clear | 45°7° (likely 38°3° to 45°7°) | 44°7° | 0% | 3 mph5 km/h from ENE, gusts 6 mph10 km/h | 66% | 0% | 0 |
| Sat 8p | Clear | 41°5° (likely 36°2° to 41°5°) | 39°4° | 0% | 3 mph5 km/h from NNE, gusts 4 mph6 km/h | 68% | 0% | 0 |
| Sat 9p | Clear | 39°4° (likely 36°2° to 39°4°) | 37°3° | 0% | 3 mph5 km/h from N, gusts 3 mph5 km/h | 70% | 0% | 0 |
| Sat 10p | Clear | 37°3° (likely 35°2° to 37°3°) | 34°1° | 0% | 3 mph5 km/h from N, gusts 4 mph7 km/h | 72% | 0% | 0 |
| Sat 11p | Clear | 36°2° (likely 35°2° to 37°3°) | 33°1° | 0% | 3 mph5 km/h from N, gusts 5 mph8 km/h | 74% | 0% | 0 |
| Sun 12a | Clear | 36°2° (likely 34°1° to 37°3°) | 33°1° | 0% | 3 mph5 km/h from N, gusts 3 mph5 km/h | 75% | 0% | 0 |
| Sun 1a | Clear | 34°1° (likely 34°1° to 37°3°) | 31°−1° | 0% | 3 mph5 km/h from NNE, gusts 4 mph6 km/h | 77% | 0% | 0 |
| Sun 2a | Clear | 34°1° (likely 33°1° to 37°3°) | 34°1° | 0% | 2 mph3 km/h from N, gusts 4 mph6 km/h | 75% | 1% | 0 |
| Sun 3a | Clear | 32°0° (likely 32°0° to 36°2°) | 29°−2° | 0% | 3 mph5 km/h from N, gusts 4 mph7 km/h | 79% | 1% | 0 |
| Sun 4a | Clear | 32°0° (likely 32°0° to 37°3°) | 29°−2° | 0% | 3 mph5 km/h from N, gusts 4 mph6 km/h | 78% | 1% | 0 |
| Sun 5a | Clear | 31°−1° (likely 31°−1° to 38°3°) | 28°−2° | 0% | 3 mph5 km/h from N, gusts 4 mph7 km/h | 79% | 1% | 0 |
| Sun 6a | Clear | 30°−1° (likely 30°−1° to 39°4°) | 26°−3° | 0% | 3 mph5 km/h from N, gusts 4 mph6 km/h | 79% | 1% | 0 |
| Sun 7a | Clear | 30°−1° (likely 30°−1° to 38°3°) | 26°−3° | 0% | 3 mph5 km/h from N, gusts 4 mph6 km/h | 77% | 1% | 0 |
| Sun 8a | Sunny | 30°−1° (likely 30°−1° to 38°3°) | 26°−3° | 0% | 3 mph5 km/h from N, gusts 4 mph6 km/h | 82% | 1% | 0 |
| Sun 9a | Sunny | 33°1° (likely 33°1° to 39°4°) | 30°−1° | 0% | 3 mph5 km/h from NE, gusts 4 mph7 km/h | 81% | 0% | 0 |
| Sun 10a | Sunny | 39°4° (likely 38°3° to 43°6°) | 37°3° | 0% | 3 mph5 km/h from NE, gusts 4 mph6 km/h | 74% | 0% | 1 |
| Sun 11a | Sunny | 44°7° (likely 43°6° to 46°8°) | 42°6° | 0% | 3 mph5 km/h from NE, gusts 6 mph9 km/h | 67% | 0% | 2 |
| Sun 12p | Sunny | 48°9° (likely 47°8° to 50°10°) | 47°8° | 0% | 3 mph5 km/h from SE, gusts 6 mph9 km/h | 63% | 0% | 3 |
| Sun 1p | Sunny | 52°11° (likely 49°9° to 52°11°) | 52°11° | 0% | 3 mph5 km/h from SE, gusts 7 mph12 km/h | 57% | 4% | 4 |
| Sun 2p | Sunny | 53°12° (likely 50°10° to 53°12°) | 53°12° | 0% | 3 mph5 km/h from SE, gusts 8 mph12 km/h | 54% | 5% | 4 |
| Sun 3p | Sunny | 54°12° (likely 51°11° to 54°12°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 8 mph12 km/h | 51% | 10% | 4 |
| Sun 4p | Sunny | 55°13° (likely 51°11° to 55°13°) | 55°13° | 0% | 5 mph8 km/h from S, gusts 6 mph10 km/h | 51% | 6% | 3 |
| Sun 5p | Sunny | 53°12° (likely 50°10° to 53°12°) | 53°12° | 0% | 5 mph8 km/h from S, gusts 6 mph9 km/h | 51% | 7% | 2 |
| Sun 6p | Partly sunny | 52°11° (likely 48°9° to 52°11°) | 52°11° | 0% | 3 mph5 km/h from S, gusts 5 mph8 km/h | 58% | 45% | 1 |
| Sun 7p | Partly cloudy | 49°9° (likely 43°6° to 49°9°) | 48°9° | 0% | 3 mph5 km/h from S, gusts 4 mph7 km/h | 65% | 49% | 0 |
| Sun 8p | Partly cloudy | 45°7° (likely 42°6° to 46°8°) | 44°7° | 0% | 3 mph5 km/h from S, gusts 4 mph6 km/h | 68% | 63% | 0 |
| Sun 9p | Partly cloudy | 42°6° (likely 41°5° to 45°7°) | 42°6° | 0% | 2 mph3 km/h from N, gusts 4 mph6 km/h | 70% | 72% | 0 |
| Sun 10p | Partly cloudy | 40°4° (likely 40°4° to 44°7°) | 40°4° | 0% | 2 mph3 km/h from N, gusts 5 mph7 km/h | 72% | 73% | 0 |
| Sun 11p | Partly cloudy | 39°4° (likely 39°4° to 43°6°) | 39°4° | 0% | 2 mph3 km/h from N, gusts 4 mph6 km/h | 75% | 72% | 0 |
| Mon 12a | Partly cloudy | 38°3° (likely 38°3° to 42°6°) | 38°3° | 0% | 2 mph3 km/h from N, gusts 5 mph7 km/h | 77% | 71% | 0 |
| Mon 1a | Mostly clear | 37°3° (likely 37°3° to 42°6°) | 37°3° | 0% | 2 mph3 km/h from N, gusts 4 mph7 km/h | 79% | 43% | 0 |
| Mon 2a | Cloudy | 35°2° (likely 35°2° to 42°6°) | 35°2° | 0% | 2 mph3 km/h from N, gusts 5 mph7 km/h | 81% | 68% | 0 |
| Mon 3a | Partly cloudy | 34°1° (likely 34°1° to 42°6°) | 34°1° | 0% | 2 mph3 km/h from N, gusts 5 mph8 km/h | 83% | 48% | 0 |
| Mon 4a | Partly cloudy | 33°1° (likely 33°1° to 41°5°) | 33°1° | 0% | 2 mph3 km/h from N, gusts 5 mph8 km/h | 85% | 71% | 0 |
| Mon 5a | Partly cloudy | 33°1° (likely 33°1° to 41°5°) | 33°1° | 0% | 2 mph3 km/h from N, gusts 6 mph9 km/h | 86% | 75% | 0 |
| Mon 6a | Cloudy | 32°0° (likely 32°0° to 42°6°) | 29°−2° | 0% | 3 mph5 km/h from NNE, gusts 6 mph10 km/h | 87% | 85% | 0 |
| Mon 7a | Mostly cloudy | 32°0° (likely 29°−2° to 42°6°) | 29°−2° | 0% | 3 mph5 km/h from NNE, gusts 4 mph7 km/h | 89% | 77% | 0 |
| Mon 8a | Mostly cloudy | 33°1° (likely 30°−1° to 42°6°) | 30°−1° | 0% | 3 mph5 km/h from NNE, gusts 4 mph7 km/h | 91% | 73% | 0 |
| Mon 9a | Mostly cloudy | 35°2° (likely 33°1° to 44°7°) | 31°−1° | 0% | 5 mph8 km/h from NNE, gusts 5 mph9 km/h | 90% | 61% | 0 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Sunny. High 51°11°, low 30°−1°. Typical 55°13° / 28°−2°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 40°4°Dry
Afternoon
noon–6 PM
Sunny, 51°11°Dry
Evening
6 PM–midnight
Clear, 41°5°Dry
Overnight
midnight–6 AM
Clear, 31°−1°Dry
Official NWS forecast
Today: Sunny. High near 51, with temperatures falling to around 49 in the afternoon. East northeast wind around 6 mph.
Tonight: Mostly clear, with a low around 30. North northeast wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 45°7°–51°11°
- Low, likely
- 26°−3°–34°1°
- Typical high / low
- 55°13° / 28°−2°
- Wind
- 8 mph13 km/h, gusts 15 mph23 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 55°13°, low 32°0°. Typical 54°12° / 27°−3°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 30°−1°Dry
Afternoon
noon–6 PM
Sunny, 55°13°Dry
Evening
6 PM–midnight
Partly cloudy, 45°7°Dry
Overnight
midnight–6 AM
Partly cloudy, 33°1°Dry
Official NWS forecast
Day: Sunny. High near 55, with temperatures falling to around 53 in the afternoon. East wind around 5 mph.
Night: Partly cloudy, with a low around 32. North wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 51°11°–55°13°
- Low, likely
- 32°0°–36°2°
- Typical high / low
- 54°12° / 27°−3°
- Wind
- 8 mph13 km/h
- UV peak
- 4
Monday, Oct 26. Mostly cloudy. High 53°12°, low 29°−2°. Typical 54°12° / 27°−3°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly cloudy, 33°1°Dry
Afternoon
noon–6 PM
Sunny, 50°10°20% chance · 0.04 in0.9 mm
Evening
6 PM–midnight
Drizzle, 45°7°40% chance · 0.14 in3.4 mm
Overnight
midnight–6 AM
Showers, 32°0°30% chance · 0.05 in1.2 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 53. East northeast wind 3 to 7 mph.
Night: A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 48°9°–53°12°
- Low, likely
- 29°−2°–41°5°
- Typical high / low
- 54°12° / 27°−3°
- Wind
- 17 mph27 km/h, gusts 26 mph41 km/h
- UV peak
- 4
Tuesday, Oct 27. Snow. High 49°9°, low 25°−4°. Typical 53°12° / 26°−3°. Snow 0.04 in1 mm, 20% chance. Mostly agree.
Morning
6 AM–noon
Sunny, 31°−1°20% chance
Afternoon
noon–6 PM
Cloudy, 45°7°Dry
Evening
6 PM–midnight
Clear, 38°3°Dry
Overnight
midnight–6 AM
Clear, 29°−2°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain and snow before noon. Mostly sunny, with a high near 49. Chance of precipitation is 20%.
Night: Partly cloudy, with a low around 25.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 43°6°–49°9°
- Low, likely
- 24°−4°–36°2°
- Typical high / low
- 53°12° / 26°−3°
- Wind
- 21 mph34 km/h, gusts 31 mph50 km/h
- UV peak
- 4
Wednesday, Oct 28. Partly sunny. High 50°10°, low 29°−2°. Typical 52°11° / 26°−3°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 28°−2°Dry
Afternoon
noon–6 PM
Sunny, 46°8°Dry
Evening
6 PM–midnight
Clear, 39°4°Dry
Overnight
midnight–6 AM
Cloudy, 33°0°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 50.
Night: Partly cloudy, with a low around 29.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 44°7°–50°10°
- Low, likely
- 23°−5°–32°0°
- Typical high / low
- 52°11° / 26°−3°
- Wind
- 13 mph20 km/h
- UV peak
- 4
Thursday, Oct 29. Drizzle. High 52°11°, low 32°0°. Typical 52°11° / 26°−3°. Rain 0.04 in1 mm, 10% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 34°1°Dry
Afternoon
noon–6 PM
Cloudy, 48°9°Dry
Evening
6 PM–midnight
Drizzle, 43°6°20% chance · 0.04 in1 mm
Overnight
midnight–6 AM
Rain, 38°3°40% chance · 0.17 in4.2 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 after midnight. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 47°8°–52°11°
- Low, likely
- 27°−3°–37°3°
- Typical high / low
- 52°11° / 26°−3°
- Wind
- 9 mph14 km/h, gusts 17 mph28 km/h
- UV peak
- 3
Friday, Oct 30. Rain. High 53°12°, low 31°−1°. Typical 51°11° / 25°−4°. Rain 0.2 in5.1 mm, 20% chance. Mostly agree.
Morning
6 AM–noon
Drizzle, 38°3°40% chance · 0.03 in0.8 mm
Afternoon
noon–6 PM
Drizzle, 45°7°30% chance · 0.02 in0.5 mm
Evening
6 PM–midnight
Partly cloudy, 40°5°20% chance · 0.02 in0.5 mm
Overnight
midnight–6 AM
Clear, 31°−1°30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain. Mostly sunny, with a high near 53. Chance of precipitation is 20%.
Night: A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 43°6°–53°12°
- Low, likely
- 30°−1°–38°3°
- Typical high / low
- 51°11° / 25°−4°
- Wind
- 15 mph24 km/h, gusts 24 mph39 km/h
- UV peak
- 2
Saturday, Oct 31. Drizzle. High 40°4°, low 25°−4°. Typical 51°11° / 25°−4°. Rain 0.04 in1 mm, 30% chance. Mostly agree.
Morning
6 AM–noon
Sunny, 27°−3°20% chance
Afternoon
noon–6 PM
Sunny, 40°5°20% chance · 0.01 in0.3 mm
Evening
6 PM–midnight
Clear, 33°0°Dry
Overnight
midnight–6 AM
Clear, 24°−4°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
- 39°4°–43°6°
- Low, likely
- 13°−11°–30°−1°
- Typical high / low
- 51°11° / 25°−4°
- Wind
- 16 mph26 km/h, gusts 27 mph44 km/h
- UV peak
- 4
Sunday, Nov 1. Cloudy. High 41°5°, low 24°−4°. Typical 50°10° / 24°−4°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 25°−4°Dry
Afternoon
noon–6 PM
Sunny, 40°5°Dry
Evening
6 PM–midnight
Clear, 34°1°Dry
Overnight
midnight–6 AM
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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 39°4°–44°7°
- Low, likely
- 14°−10°–29°−2°
- Typical high / low
- 50°10° / 24°−4°
- Wind
- 7 mph11 km/h
- UV peak
- 4
Monday, Nov 2. Cloudy. High 43°6°, low 31°−1°. Typical 50°10° / 24°−4°. Dry. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 30°−1°Dry
Afternoon
noon–6 PM
Cloudy, 42°6°Dry
Evening
6 PM–midnight
Cloudy, 38°4°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
- 38°3°–50°10°
- Low, likely
- 29°−2°–34°1°
- Typical high / low
- 50°10° / 24°−4°
- Wind
- 16 mph26 km/h, gusts 26 mph42 km/h
- UV peak
- 3
The outlook
Today
Dry, high 51°, low 30°.
Tomorrow
Dry, high 55°, low 32°, warming up.
Monday
Dry, high 53°, low 29°.
Rest of week
Mostly dry, highs 40–53°.
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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Big Lost River at Arco At Sunset Road
4.8 mi- Level
- 5.1 ft
Reading from Sat 7:45 AM · NWS gauge page
Big Lost River below Moore Div Nr Moore
14 mi- Level
- 9.4 ft
- Flow
- under 1 cfs
Reading from Sat 7:45 AM · NWS gauge page
Antelope Creek (ID) near Darlington
16 mi- Level
- 4.5 ft
- Flow
- 27 cfs
Reading from Sat 8 AM · 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 177
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 10 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?
Arco · official normals 1991–2020 · records 1914–2026
Oct 24, today vs a typical year
Today’s expected high is 4°2° colder than typical.
- Normal high / low
- 55°13° / 28°−2°
- Forecast high / low
- 51°11° / 30°−1°
- Record high
- 72°22° in 1933
- Record low
- 11°−12° in 1975
Last 7 days vs normal
- —SunOct 18
- —MonOct 19
- —TueOct 20
- —WedOct 21
- —ThuOct 22
- —FriOct 23
- —SatOct 24
Butte City weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:58 AM, sunset 6:35 PM.
- Daylight
- 10 h 36 min
- Losing 2 min 49 s a day; shortest Dec 21, 1 h 40 min less
- Golden hour
- 5:55–6:53 PM
- Morning 7:40–8:38 AM
- Blue hour
- 6:53–7:04 PM
- Morning 7:29–7:40 AM; first light 7:29 AM
Stars tonight? Fair
Clear 7:04 PM–7:30 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 6:15 AM · rises 5:35 PM
- Full moon
- Oct 25
- New moon
- Nov 9
