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Observed 5:20 AM MDT at KBZN

Three Forks, MT weather

Mostly cloudy and 28°−2°, 11°6° colder than usual, freeze watch tonight, low 26°−3°.

Today: low 26°−3° (likely 23°−5° to 30°−1°), high 42°6° (likely 42°6° to 46°8°).

Mostly agree

Now 28°−2°

Mostly cloudy · Feels like 23°−5°

Feels like
23°−5°
Wind chill from 5 mph7 km/h wind · air 28°−2°
Wind
5 mph7 km/h
From the north-northeast. Light through 5 PM
Dew point
27°−3°
Dry · up to 36°2° by 1 PM (comfortable)
Humidity
93%
Air 28°−2°, dew point 27°−3° · frost likely
UV index
0Low
Moderate 12–5 PM · peak 4
Pressure
30.35 inHg1028 hPa
Steady over the last 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

Good hours for
  • Hard freeze until 11 AM (low 26°−3°)
  • Fog until noon
  • Above 30°−1° today by 10 AM
  • Hard freeze tonight 9 PM–noon (low 19°−7°)
  • Hard freeze tomorrow night from 8 PM (low 22°−6°)
  1. This morningUp to 34°1° by 11 AM · Partly cloudy · freezing, low 26°−3°
  2. This afternoonUp to 42°6° by 5 PM · Clear
  3. TonightDown to 21°−6° by 5 AM · freezing, low 21°−6° · Clear
  4. Tomorrow morningUp to 31°−1° by 11 AM · freezing, low 19°−7° · Partly cloudy
  5. Tomorrow afternoonUp to 43°6° by 5 PM · Clear
  6. Tomorrow nightDown to 22°−6° by 4 AM · freezing, low 22°−6° · Partly cloudy
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 5aFog28°−2° (likely 26°−3° to 31°−1°)28°−2°0%0 mph0 km/h, gusts 4 mph6 km/h100%51%0
Sat 6aFog27°−3° (likely 26°−3° to 31°−1°)27°−3°0%0 mph0 km/h, gusts 6 mph10 km/h100%47%0
Sat 7aFog27°−3° (likely 25°−4° to 31°−1°)27°−3°0%0 mph0 km/h, gusts 6 mph9 km/h100%46%0
Sat 8aFog26°−3° (likely 25°−4° to 31°−1°)26°−3°0%0 mph0 km/h, gusts 5 mph8 km/h100%43%0
Sat 9aFog27°−3° (likely 26°−3° to 32°0°)27°−3°0%0 mph0 km/h, gusts 5 mph7 km/h100%40%0
Sat 10aFog31°−1° (likely 29°−2° to 34°1°)31°−1°0%0 mph0 km/h, gusts 4 mph6 km/h100%36%1
Sat 11aFog34°1° (likely 31°−1° to 36°2°)34°1°0%0 mph0 km/h, gusts 4 mph6 km/h100%34%2
Sat 12pMostly sunny36°2° (likely 34°1° to 39°4°)36°2°0%0 mph0 km/h, gusts 4 mph6 km/h93%16%3
Sat 1pSunny38°3° (likely 37°3° to 41°5°)38°3°0%0 mph0 km/h, gusts 4 mph7 km/h89%4%4
Sat 2pSunny41°5° (likely 40°4° to 43°6°)41°5°0%0 mph0 km/h, gusts 6 mph9 km/h83%2%4
Sat 3pSunny40°4° (likely 40°4° to 45°7°)40°4°0%0 mph0 km/h, gusts 5 mph8 km/h78%2%3
Sat 4pSunny41°5° (likely 41°5° to 46°8°)41°5°0%0 mph0 km/h, gusts 4 mph7 km/h75%4%3
Sat 5pSunny42°6° (likely 41°5° to 46°8°)42°6°0%0 mph0 km/h, gusts 4 mph6 km/h75%5%2
Sat 6pMostly clear40°4° (likely 38°3° to 44°7°)40°4°0%0 mph0 km/h, gusts 3 mph5 km/h80%18%1
Sat 7pClear35°2° (likely 35°2° to 41°5°)35°2°0%0 mph0 km/h, gusts 2 mph4 km/h94%7%0
Sat 8pClear33°1° (likely 33°1° to 39°4°)33°1°0%0 mph0 km/h, gusts 2 mph3 km/h100%3%0
Sat 9pClear29°−2° (likely 29°−2° to 37°3°)29°−2°0%0 mph0 km/h, gusts 2 mph3 km/h100%1%0
Sat 10pClear27°−3° (likely 27°−3° to 36°2°)27°−3°0%0 mph0 km/h, gusts 2 mph3 km/h100%3%0
Sat 11pClear26°−3° (likely 26°−3° to 35°2°)26°−3°0%0 mph0 km/h, gusts 1 mph2 km/h100%2%0
Sun 12aClear25°−4° (likely 25°−4° to 35°2°)25°−4°0%0 mph0 km/h, gusts 1 mph2 km/h100%2%0
Sun 1aClear24°−4° (likely 24°−4° to 34°1°)24°−4°0%0 mph0 km/h, gusts 1 mph2 km/h100%9%0
Sun 2aClear24°−4° (likely 24°−4° to 34°1°)24°−4°0%0 mph0 km/h, gusts 2 mph3 km/h100%12%0
Sun 3aClear23°−5° (likely 23°−5° to 34°1°)23°−5°0%0 mph0 km/h, gusts 2 mph3 km/h100%13%0
Sun 4aPartly cloudy23°−5° (likely 23°−5° to 34°1°)23°−5°0%0 mph0 km/h, gusts 1 mph2 km/h100%21%0
Sun 5aClear21°−6° (likely 21°−6° to 32°0°)21°−6°0%0 mph0 km/h, gusts 3 mph5 km/h100%15%0
Sun 6aPartly cloudy20°−7° (likely 20°−7° to 33°1°)20°−7°0%0 mph0 km/h, gusts 2 mph3 km/h100%53%0
Sun 7aPartly cloudy20°−7° (likely 20°−7° to 33°1°)20°−7°0%0 mph0 km/h, gusts 2 mph3 km/h100%24%0
Sun 8aPartly sunny19°−7° (likely 19°−7° to 33°1°)19°−7°0%0 mph0 km/h, gusts 2 mph3 km/h100%55%0
Sun 9aPartly sunny22°−6° (likely 22°−6° to 34°1°)22°−6°0%0 mph0 km/h, gusts 2 mph3 km/h100%42%0
Sun 10aPartly sunny27°−3° (likely 27°−3° to 38°3°)27°−3°0%0 mph0 km/h, gusts 4 mph7 km/h100%28%1
Sun 11aSunny31°−1° (likely 31°−1° to 42°6°)31°−1°0%0 mph0 km/h, gusts 5 mph8 km/h97%20%2
Sun 12pSunny34°1° (likely 34°1° to 45°7°)34°1°0%0 mph0 km/h, gusts 6 mph9 km/h89%17%3
Sun 1pSunny37°3° (likely 37°3° to 47°8°)37°3°0%0 mph0 km/h, gusts 5 mph9 km/h84%10%4
Sun 2pSunny41°5° (likely 41°5° to 48°9°)41°5°0%0 mph0 km/h, gusts 6 mph10 km/h78%3%4
Sun 3pSunny42°6° (likely 42°6° to 50°10°)42°6°0%1 mph2 km/h from N, gusts 6 mph10 km/h75%12%3
Sun 4pSunny42°6° (likely 42°6° to 50°10°)42°6°0%1 mph2 km/h from N, gusts 7 mph11 km/h73%38%2
Sun 5pSunny43°6° (likely 42°6° to 49°9°)43°6°0%1 mph2 km/h from N, gusts 6 mph10 km/h73%40%1
Sun 6pClear41°5° (likely 39°4° to 47°8°)41°5°0%0 mph0 km/h, gusts 7 mph10 km/h80%37%1
Sun 7pClear36°2° (likely 36°2° to 43°6°)36°2°0%0 mph0 km/h, gusts 5 mph8 km/h94%42%0
Sun 8pPartly cloudy32°0° (likely 32°0° to 41°5°)32°0°0%0 mph0 km/h, gusts 5 mph7 km/h100%44%0
Sun 9pMostly clear29°−2° (likely 29°−2° to 39°4°)29°−2°0%0 mph0 km/h, gusts 5 mph8 km/h100%50%0
Sun 10pMostly clear27°−3° (likely 27°−3° to 37°3°)27°−3°0%0 mph0 km/h, gusts 6 mph9 km/h100%54%0
Sun 11pMostly clear26°−3° (likely 26°−3° to 36°2°)26°−3°0%0 mph0 km/h, gusts 4 mph6 km/h100%63%0
Mon 12aPartly cloudy25°−4° (likely 25°−4° to 35°2°)25°−4°0%0 mph0 km/h, gusts 3 mph5 km/h100%58%0
Mon 1aPartly cloudy24°−4° (likely 20°−7° to 34°1°)24°−4°0%0 mph0 km/h, gusts 2 mph3 km/h100%52%0
Mon 2aPartly cloudy24°−4° (likely 20°−7° to 34°1°)24°−4°0%0 mph0 km/h, gusts 2 mph4 km/h100%44%0
Mon 3aPartly cloudy23°−5° (likely 20°−7° to 33°1°)23°−5°0%0 mph0 km/h, gusts 2 mph3 km/h100%48%0
Mon 4aMostly clear22°−6° (likely 20°−7° to 32°0°)22°−6°0%0 mph0 km/h, gusts 2 mph3 km/h100%46%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Fog. High 42°6°, low 26°−3°. Typical 53°12° / 25°−4°. Dry. Mostly agree.

    1. Morning

      6 AM–noon

      Fog, 26°−3°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 42°6°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 33°1°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 21°−6°

      Dry

    Official NWS forecast

    Today: Areas of fog before noon. Sunny, with a high near 42. Wind around 0 mph.

    Tonight: Areas of fog. Partly cloudy, with a low around 26. Wind around 0 mph.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    42°6°–46°8°
    Low, likely
    23°−5°–30°−1°
    Typical high / low
    53°12° / 25°−4°
    Wind
    4 mph7 km/h, gusts 13 mph20 km/h
    UV peak
    4
  2. Tomorrow, Oct 25. Partly sunny. High 44°7°, low 19°−7°. Typical 53°12° / 25°−4°. Dry. Forecasts differ.

    1. Morning

      6 AM–noon

      Partly sunny, 19°−7°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 43°6°

      Dry

    3. Evening

      6 PM–midnight

      Mostly clear, 32°0°

      Dry

    4. Overnight

      midnight–6 AM

      Partly cloudy, 22°−6°

      Dry

    Official NWS forecast

    Day: Mostly sunny, with a high near 44. North wind around 1 mph.

    Night: Partly cloudy, with a low around 19. Wind around 0 mph.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    43°6°–50°10°
    Low, likely
    19°−7°–32°0°
    Typical high / low
    53°12° / 25°−4°
    Wind
    6 mph10 km/h, gusts 14 mph22 km/h
    UV peak
    4
  3. Monday, Oct 26. Cloudy. High 49°9°, low 23°−5°. Typical 52°11° / 24°−4°. Dry. Mostly agree.

    1. Morning

      6 AM–noon

      Partly sunny, 28°−2°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 50°10°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 42°6°

      20% chance · 0.02 in0.4 mm

    4. Overnight

      midnight–6 AM

      Rain, 36°2°

      50% chance · 0.11 in2.8 mm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Partly sunny, with a high near 49. Wind around 0 mph.

    Night: A chance of rain before 3am, then a chance of snow. Mostly cloudy, with a low around 23. Wind around 0 mph.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    47°8°–52°11°
    Low, likely
    22°−6°–31°−1°
    Typical high / low
    52°11° / 24°−4°
    Wind
    4 mph6 km/h
    UV peak
    4
  4. Tuesday, Oct 27. Snow. High 48°9°, low 21°−6°. Typical 52°11° / 24°−4°. Snow 0.17 in4.3 mm, 60% chance. Mostly agree.

    1. Morning

      6 AM–noon

      Drizzle, 36°2°

      50% chance · 0.04 in1.1 mm

    2. Afternoon

      noon–6 PM

      Drizzle, 49°10°

      30% chance · 0.01 in0.4 mm

    3. Evening

      6 PM–midnight

      Mostly clear, 40°5°

      30% chance

    4. Overnight

      midnight–6 AM

      Clear, 30°−1°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Snow likely before 9am, then rain likely. Partly sunny, with a high near 48. Southwest wind 0 to 5 mph.

    Night: A chance of rain before 3am, then a slight chance of snow. Mostly cloudy, with a low around 21.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    48°9°–50°10°
    Low, likely
    21°−6°–39°4°
    Typical high / low
    52°11° / 24°−4°
    Wind
    15 mph24 km/h, gusts 27 mph43 km/h
    UV peak
    3
  5. Wednesday, Oct 28. Partly sunny. High 46°8°, low 19°−7°. Typical 51°11° / 24°−4°. Dry. Mostly agree.

    1. Morning

      6 AM–noon

      Sunny, 28°−2°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 50°10°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 41°5°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 30°−1°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 46.

    Night: Partly cloudy, with a low around 19.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    46°8°–52°11°
    Low, likely
    19°−7°–34°1°
    Typical high / low
    51°11° / 24°−4°
    Wind
    8 mph13 km/h, gusts 25 mph40 km/h
    UV peak
    4
  6. Thursday, Oct 29. Partly sunny. High 45°7°, low 20°−7°. Typical 51°11° / 23°−5°. Dry. Forecasts differ.

    1. Morning

      6 AM–noon

      Cloudy, 30°−1°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 46°8°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 41°5°

      Dry

    4. Overnight

      midnight–6 AM

      Snow, 36°2°

      20% chance · 0.1 in0.3 cm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 45.

    Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 20.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    44°7°–48°9°
    Low, likely
    20°−7°–34°1°
    Typical high / low
    51°11° / 23°−5°
    Wind
    7 mph11 km/h, gusts 19 mph31 km/h
    UV peak
    3
  7. Friday, Oct 30. Snow. High 46°8°, low 34°1°. Typical 50°10° / 23°−5°. Snow 0–2 in0–5 cm, 20% chance. Forecasts differ.

    1. Morning

      6 AM–noon

      Snow, 36°2°

      30% chance · 0.2 in0.5 cm

    2. Afternoon

      noon–6 PM

      Cloudy, 47°8°

      30% chance

    3. Evening

      6 PM–midnight

      Drizzle, 40°4°

      30% chance · 0.04 in1 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 35°2°

      20% chance · 0.1 in0.3 cm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A slight chance of rain and snow. Partly sunny, with a high near 46.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    40°4°–54°12°
    Low, likely
    30°−1°–39°4°
    Typical high / low
    50°10° / 23°−5°
    Wind
    15 mph25 km/h
    UV peak
    3
  8. Saturday, Oct 31. Drizzle. High 41°5°, low 30°−1°. Typical 50°10° / 23°−5°. Rain 0.15 in3.8 mm, 20% chance. Forecasts differ.

    1. Morning

      6 AM–noon

      Drizzle, 34°1°

      20% chance · 0.3 in0.8 cm

    2. Afternoon

      noon–6 PM

      Cloudy, 41°5°

      Dry

    3. Evening

      6 PM–midnight

      Mostly clear, 35°2°

      Dry

    4. Overnight

      midnight–6 AM

      Partly cloudy, 28°−2°

      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°–46°8°
    Low, likely
    29°−2°–33°1°
    Typical high / low
    50°10° / 23°−5°
    Wind
    12 mph20 km/h, gusts 21 mph33 km/h
    UV peak
    3
  9. Sunday, Nov 1. Partly sunny. High 43°6°, low 26°−3°. Typical 49°9° / 22°−6°. Dry. Forecasts differ.

    1. Morning

      6 AM–noon

      Sunny, 27°−3°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 43°6°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 37°3°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 31°−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
    38°3°–51°11°
    Low, likely
    16°−9°–31°−1°
    Typical high / low
    49°9° / 22°−6°
    Wind
    11 mph18 km/h, gusts 20 mph32 km/h
    UV peak
    3
  10. Monday, Nov 2. Cloudy. High 46°8°, low 32°0°. Typical 49°9° / 22°−6°. Dry. Forecasts differ.

    1. Morning

      6 AM–noon

      Sunny, 33°1°

      Dry

    2. Afternoon

      noon–6 PM

      Partly sunny, 47°8°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 39°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
    37°3°–54°12°
    Low, likely
    30°−1°–34°1°
    Typical high / low
    49°9° / 22°−6°
    Wind
    6 mph10 km/h, gusts 15 mph24 km/h
    UV peak
    3

The outlook

  1. Today

    Dry, high 42°, low 26°.

  2. Tomorrow

    Dry, high 44°, low 19°.

  3. Monday

    Dry, high 49°, low 23°, warming up.

  4. Rest of week

    Highs 41–48°; chance of precipitation on Tuesday.

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

Jefferson River near Three Forks

2.1 mi
Below flood stage
Level
3.5 ft
Flow
1,400 cfs

Reading from Sat 4 AM · NWS gauge page

Gallatin River at Logan

5.3 mi
Below flood stage
Level
5.1 ft
Flow
800 cfs

Reading from Sat 4 AM · NWS gauge page

East Gallatin River near Manhattan

12 mi
Level
3.2 ft

Reading from Sat 4:15 AM · NWS gauge page

Willow Creek (Southwest MT) near Harrison

15 mi
Level
1.8 ft

Reading from Sat 12:15 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: 26°−3°

Overnight low near 26°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.

Heating this week

About 64% less heating than a typical week.

This week 68Typical 190

Heating degree days, base 65°F

Heat-pump hours, next 7 days

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

Comfort

Dry air outside (dew point 27°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.

Open the windows?

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

Is this typical?

Logan Landfill · official normals 1991–2020 · records 2008–2026

Oct 24, today vs a typical year

Today’s expected high is 11°6° colder than typical.

Normal high / low
53°12° / 25°−4°
Forecast high / low
42°6° / 26°−3°
Record high
67°19° in 2011
Record low
10°−12° in 2020

Last 7 days vs normal

On average 9°5° warmer than normal (daily mean temperature).

  1. +5°+3°SunOct 18
  2. +8°+4°MonOct 19
  3. +8°+4°TueOct 20
  4. +9°+5°WedOct 21
  5. +9°+5°ThuOct 22
  6. +14°+8°FriOct 23
  7. —SatOct 24

Three Forks weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:55 AM, sunset 6:24 PM.

Daylight
10 h 29 min
Losing 2 min 58 s a day; shortest Dec 21, 1 h 50 min less
Golden hour
5:42–6:43 PM
Morning 7:36–8:37 AM
Blue hour
6:43–6:55 PM
Morning 7:24–7:36 AM; first light 7:24 AM

Stars tonight? Poor

Clouds most of the night (about 48% cover).

Moon

Waxing gibbous

96% lit · growing

Today
sets 6:10 AM · rises 5:25 PM
Full moon
Oct 25
New moon
Nov 9
Looking south from Three Forks. The highest point on the skyline is about 11,000 ft, 42 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.