Model estimate for 8:00 AM MDT (no recent station report)

Garrison, MT weather

Sunny and 21°−6°, freeze watch tonight, low 23°−5°.

Mostly agree

Now 21°−6°

Sunny · Feels like 15°−9°

Feels like: 14°−10°; Wind chill from 5 mph8 km/h wind · air 21°−6°
Wind: 5 mph8 km/h; From the east. Up to 5 mph8 km/h through 8 PM
Dew point: 21°−6°; Dry · up to 31°−1° by 11 AM
Humidity: 100%; Air 21°−6°, dew point 21°−6° · frost likely
UV tomorrow: 4Moderate; Moderate 12–4 PM · peak 4

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze until noon (low 21°−6°)
Above 30°−1° today by 11 AM
Hard freeze tonight 9 PM–noon (low 21°−6°)
Gusts to 26 mph42 km/h tomorrow night 6–7 PM
Hard freeze tomorrow night from 8 PM (low 23°−5°)

This morningUp to 32°0° by 11 AM · freezing, low 21°−6° · Clear
This afternoonUp to 45°7° by 4 PM · Clear
TonightDown to 22°−6° by 5 AM · freezing, low 22°−6° · Partly cloudy
Tomorrow morningUp to 32°0° by 11 AM · freezing, low 21°−6° · Clear
Tomorrow afternoonUp to 43°6° by 4 PM · Partly cloudy
Tomorrow nightDown to 23°−5° by 5 AM · freezing, low 23°−5° · gusts to 26 mph42 km/h · 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 8a	Sunny	21°−6° (likely 21°−6° to 31°−1°)	15°−9°	0%	5 mph8 km/h from E, gusts 10 mph15 km/h	100%	5%	0
Sat 9a	Sunny	23°−5° (likely 23°−5° to 31°−1°)	17°−8°	0%	5 mph8 km/h from E, gusts 11 mph17 km/h	100%	2%	0
Sat 10a	Sunny	28°−2° (likely 28°−2° to 34°1°)	24°−4°	0%	3 mph5 km/h from SE, gusts 11 mph17 km/h	100%	1%	1
Sat 11a	Sunny	32°0° (likely 32°0° to 38°3°)	29°−2°	0%	3 mph5 km/h from SSE, gusts 12 mph20 km/h	98%	0%	1
Sat 12p	Sunny	36°2° (likely 36°2° to 41°5°)	36°2°	0%	2 mph3 km/h from S, gusts 12 mph20 km/h	91%	2%	2
Sat 1p	Sunny	41°5° (likely 41°5° to 44°7°)	41°5°	0%	2 mph3 km/h from S, gusts 9 mph15 km/h	84%	9%	2
Sat 2p	Sunny	43°6° (likely 43°6° to 46°8°)	43°6°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	78%	8%	2
Sat 3p	Sunny	44°7° (likely 44°7° to 48°9°)	44°7°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	74%	11%	2
Sat 4p	Partly sunny	45°7° (likely 44°7° to 49°9°)	45°7°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	71%	54%	1
Sat 5p	Partly sunny	44°7° (likely 42°6° to 49°9°)	44°7°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	70%	58%	1
Sat 6p	Mostly clear	42°6° (likely 39°4° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 3 mph4 km/h	77%	64%	1
Sat 7p	Partly cloudy	38°3° (likely 36°2° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	87%	60%	0
Sat 8p	Cloudy	33°1° (likely 33°1° to 40°4°)	33°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	66%	0
Sat 9p	Cloudy	31°−1° (likely 31°−1° to 39°4°)	31°−1°	0%	1 mph2 km/h from E, gusts 5 mph7 km/h	94%	68%	0
Sat 10p	Mostly clear	29°−2° (likely 29°−2° to 38°3°)	29°−2°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	98%	42%	0
Sat 11p	Clear	28°−2° (likely 28°−2° to 37°3°)	28°−2°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	100%	16%	0
Sun 12a	Mostly clear	28°−2° (likely 28°−2° to 36°2°)	24°−4°	0%	3 mph5 km/h from E, gusts 7 mph12 km/h	100%	15%	0
Sun 1a	Clear	26°−3° (likely 26°−3° to 36°2°)	22°−6°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	100%	12%	0
Sun 2a	Mostly clear	25°−4° (likely 25°−4° to 36°2°)	21°−6°	0%	3 mph5 km/h from E, gusts 9 mph14 km/h	100%	16%	0
Sun 3a	Clear	25°−4° (likely 25°−4° to 35°2°)	21°−6°	0%	3 mph5 km/h from E, gusts 9 mph15 km/h	100%	8%	0
Sun 4a	Clear	24°−4° (likely 24°−4° to 34°1°)	20°−7°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	100%	6%	0
Sun 5a	Clear	22°−6° (likely 22°−6° to 35°2°)	16°−9°	0%	5 mph8 km/h from E, gusts 10 mph17 km/h	100%	2%	0
Sun 6a	Clear	22°−6° (likely 22°−6° to 36°2°)	16°−9°	0%	5 mph8 km/h from E, gusts 15 mph24 km/h	100%	1%	0
Sun 7a	Clear	22°−6° (likely 22°−6° to 36°2°)	16°−9°	0%	5 mph8 km/h from E, gusts 17 mph28 km/h	100%	10%	0
Sun 8a	Sunny	21°−6° (likely 21°−6° to 36°2°)	15°−9°	0%	5 mph8 km/h from E, gusts 18 mph28 km/h	100%	4%	0
Sun 9a	Sunny	24°−4° (likely 24°−4° to 37°3°)	18°−8°	0%	5 mph8 km/h from E, gusts 19 mph31 km/h	100%	7%	0
Sun 10a	Sunny	29°−2° (likely 29°−2° to 39°4°)	24°−4°	0%	5 mph8 km/h from E, gusts 23 mph37 km/h	100%	7%	1
Sun 11a	Partly sunny	32°0° (likely 32°0° to 41°5°)	27°−3°	0%	5 mph8 km/h from E, gusts 23 mph37 km/h	97%	24%	2
Sun 12p	Partly sunny	36°2° (likely 36°2° to 43°6°)	32°0°	0%	5 mph8 km/h from ENE, gusts 23 mph38 km/h	89%	43%	3
Sun 1p	Partly sunny	40°4° (likely 40°4° to 44°7°)	37°3°	0%	5 mph8 km/h from ENE, gusts 23 mph37 km/h	83%	50%	4
Sun 2p	Partly sunny	42°6° (likely 42°6° to 45°7°)	39°4°	0%	5 mph8 km/h from ENE, gusts 23 mph37 km/h	79%	51%	4
Sun 3p	Partly sunny	42°6° (likely 42°6° to 46°8°)	39°4°	0%	5 mph8 km/h from ENE, gusts 23 mph37 km/h	77%	53%	3
Sun 4p	Partly sunny	43°6° (likely 41°5° to 46°8°)	40°4°	0%	5 mph8 km/h from ENE, gusts 24 mph39 km/h	75%	56%	2
Sun 5p	Partly sunny	42°6° (likely 39°4° to 44°7°)	39°4°	0%	5 mph8 km/h from ENE, gusts 25 mph39 km/h	76%	71%	1
Sun 6p	Cloudy	39°4° (likely 36°2° to 42°6°)	37°3°	0%	3 mph5 km/h from ENE, gusts 26 mph41 km/h	81%	70%	1
Sun 7p	Cloudy	35°2° (likely 33°1° to 40°4°)	32°0°	0%	3 mph5 km/h from ENE, gusts 24 mph38 km/h	92%	69%	0
Sun 8p	Cloudy	32°0° (likely 31°−1° to 38°3°)	29°−2°	0%	3 mph5 km/h from ENE, gusts 22 mph36 km/h	98%	69%	0
Sun 9p	Cloudy	29°−2° (likely 29°−2° to 37°3°)	23°−5°	0%	6 mph10 km/h from E, gusts 20 mph32 km/h	100%	59%	0
Sun 10p	Mostly cloudy	27°−3° (likely 27°−3° to 37°3°)	20°−7°	0%	6 mph10 km/h from E, gusts 19 mph30 km/h	100%	71%	0
Sun 11p	Cloudy	26°−3° (likely 26°−3° to 37°3°)	19°−7°	0%	6 mph10 km/h from E, gusts 17 mph27 km/h	100%	77%	0
Mon 12a	Cloudy	26°−3° (likely 26°−3° to 37°3°)	18°−8°	0%	7 mph11 km/h from E, gusts 15 mph24 km/h	100%	79%	0
Mon 1a	Cloudy	26°−3° (likely 26°−3° to 37°3°)	18°−8°	0%	7 mph11 km/h from E, gusts 13 mph22 km/h	100%	86%	0
Mon 2a	Cloudy	25°−4° (likely 25°−4° to 37°3°)	17°−8°	0%	7 mph11 km/h from E, gusts 13 mph21 km/h	100%	88%	0
Mon 3a	Cloudy	25°−4° (likely 25°−4° to 37°3°)	18°−8°	0%	6 mph10 km/h from ESE, gusts 12 mph20 km/h	100%	94%	0
Mon 4a	Cloudy	24°−4° (likely 24°−4° to 37°3°)	17°−8°	0%	6 mph10 km/h from ESE, gusts 11 mph17 km/h	100%	96%	0
Mon 5a	Cloudy	23°−5° (likely 23°−5° to 37°3°)	16°−9°	0%	6 mph10 km/h from ESE, gusts 10 mph15 km/h	100%	89%	0
Mon 6a	Cloudy	23°−5° (likely 23°−5° to 37°3°)	17°−8°	0%	5 mph8 km/h from ESE, gusts 8 mph13 km/h	100%	78%	0
Mon 7a	Mostly cloudy	23°−5° (likely 23°−5° to 33°1°)	17°−8°	0%	5 mph8 km/h from ESE, gusts 4 mph6 km/h	100%	76%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 46°8°, low 20°−7°. Typical 51°11° / 23°−5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 21°−6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 45°7°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 33°1°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 22°−6°
  Dry
Official NWS forecast
Today: Sunny, with a high near 46. South southeast wind 1 to 5 mph.
Tonight: Partly cloudy, with a low around 20. East northeast wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
45°7°–49°9°
Low, likely
20°−7°–30°−1°
Typical high / low
51°11° / 23°−5°
Wind
13 mph20 km/h, gusts 18 mph28 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 44°7°, low 20°−7°. Typical 51°11° / 23°−5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 21°−6°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 32°0°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 23°−5°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 44. East northeast wind around 5 mph.
Night: Mostly cloudy, with a low around 20. East wind 3 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–46°8°
Low, likely
20°−7°–34°1°
Typical high / low
51°11° / 23°−5°
Wind
25 mph40 km/h, gusts 34 mph55 km/h
UV peak
4
Monday, Oct 26. Snow. High 52°11°, low 25°−4°. Typical 50°10° / 22°−6°. Snow 0–1 in0–3 cm, 5% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 43°6°
  50% chance · 0.2 in0.6 cm
4. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  50% chance · 0.05 in1.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 52. Southeast wind around 5 mph.
Night: A chance of rain before 3am, then a chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–56°13°
Low, likely
25°−4°–33°1°
Typical high / low
50°10° / 22°−6°
Wind
18 mph28 km/h
UV peak
3
Tuesday, Oct 27. Snow. High 46°8°, low 21°−6°. Typical 50°10° / 22°−6°. Snow 0.08 in2 mm, 50% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 36°2°
  40% chance · 0.02 in0.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 45°7°
  40% chance · 0.01 in0.4 mm
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 31°0°
  Dry
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 46.
Night: A chance of rain before 3am, then a chance of snow. Mostly cloudy, with a low around 21. New rainfall amounts less than a tenth of an inch possible.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
44°7°–46°8°
Low, likely
21°−6°–37°3°
Typical high / low
50°10° / 22°−6°
Wind
18 mph29 km/h, gusts 31 mph50 km/h
UV peak
2
Wednesday, Oct 28. Snow. High 46°8°, low 19°−7°. Typical 49°9° / 22°−6°. Snow 0.01 in0.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Clear, 38°3°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 31°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow before 3pm, then a slight chance of rain. Partly sunny, with a high near 46.
Night: A slight chance of rain and snow. Mostly cloudy, with a low around 19.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
45°7°–50°10°
Low, likely
19°−7°–33°1°
Typical high / low
49°9° / 22°−6°
Wind
10 mph16 km/h, gusts 22 mph36 km/h
UV peak
3
Thursday, Oct 29. Snow. High 45°7°, low 19°−7°. Typical 49°9° / 21°−6°. Snow 0.01 in0.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 47°8°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 32°0°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow before noon. Partly sunny, with a high near 45.
Night: A slight chance of snow before 9pm, then a chance of rain and snow. Partly cloudy, with a low around 19.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
44°7°–50°10°
Low, likely
19°−7°–32°0°
Typical high / low
49°9° / 21°−6°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
3
Friday, Oct 30. Snow. High 46°8°, low 20°−7°. Typical 48°9° / 21°−6°. Snow 0–1 in0–3 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 31°0°
  30% chance · 0.03 in0.7 mm
2. Afternoon
  noon–6 PM
  Drizzle, 40°5°
  20% chance · 0.05 in1.4 mm
3. Evening
  6 PM–midnight
  Drizzle, 36°2°
  30% chance · 0.1 in0.3 cm
4. Overnight
  midnight–6 AM
  Fog, 31°−1°
  20% chance · 0.02 in0.4 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before 3pm, then a slight chance of rain and snow. Partly sunny, with a high near 46.
Night: A slight chance of snow before 9pm, then a slight chance of rain and snow. Partly cloudy, with a low around 20.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–46°8°
Low, likely
20°−7°–35°2°
Typical high / low
48°9° / 21°−6°
Wind
6 mph9 km/h, gusts 13 mph21 km/h
Saturday, Oct 31. Snow. High 38°3°, low 24°−4°. Typical 48°9° / 21°−6°. Snow < 1 in< 2 cm, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 39°4°
  Dry
3. Evening
  6 PM–midnight
  Clear, 29°−1°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 25°−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 agreeIndependent forecasts are close; the range is narrow.
High, likely
37°3°–40°4°
Low, likely
20°−7°–29°−2°
Typical high / low
48°9° / 21°−6°
Wind
13 mph21 km/h, gusts 19 mph30 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 41°5°, low 25°−4°. Typical 47°8° / 20°−7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 26°−3°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Clear, 34°1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 32°0°
  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
19°−7°–29°−2°
Typical high / low
47°8° / 20°−7°
Wind
9 mph14 km/h, gusts 26 mph42 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 44°7°, low 29°−2°. Typical 47°8° / 20°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 36°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°–51°11°
Low, likely
27°−3°–31°−1°
Typical high / low
47°8° / 20°−7°
Wind
5 mph8 km/h, gusts 14 mph23 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 46°, low 20°.
Tomorrow
Dry, high 44°, low 20°.
Monday
Dry, high 52°, low 25°, warming up.
Rest of week
Highs 38–46°; 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

Clark Fork River at Deer Lodge

11 mi

Below flood stage

Level: 3.0 ft
Flow: 276 cfs

Forecast peak 2.8 ft Sat 6 PM

Reading from Sat 6:30 AM · NWS gauge page

Little Blackfoot River near Garrison 1SE

1.8 mi

Level: 1.0 ft
Flow: 138 cfs

Reading from Sat 6:30 AM · NWS gauge page

Boulder Creek at Maxville

21 mi

Below flood stage

Level: 1.7 ft
Flow: 55 cfs

Reading from Sat 6:30 AM · NWS gauge page

Silver Bow Creek at Warm Springs MT

25 mi

Below flood stage

Level: 2.1 ft
Flow: 63 cfs

Reading from Sat 6:15 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: 23°−5°

Overnight low near 23°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.

Heating this week

About 67% less heating than a typical week.

This week 66Typical 204

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 18 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 21°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?

Deer Lodge 3 W · official normals 1991–2020 · records 1893–2026

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

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

Sun & moon

Sun

Daylight: 10 h 27 min; Losing 3 min 8 s a day; shortest Dec 21, 1 h 53 min less
Golden hour: 5:46–6:47 PM; Morning 7:42–8:44 AM
Blue hour: 6:47–6:59 PM; Morning 7:30–7:42 AM; first light 7:30 AM

Stars tonight? Fair

Mostly clear 11 PM–7:32 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:16 AM · rises 5:29 PM
Full moon: Oct 25
New moon: Nov 9

Looking southwest from Garrison. The highest point on the skyline is about 10,000 ft, 15 mi away.Skyline from USGS elevation data, heights drawn up to 4.5× taller. Sky, sun and moon as they are now.

Garrison, MT weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Clark Fork River at Deer Lodge

Little Blackfoot River near Garrison 1SE

Boulder Creek at Maxville

Silver Bow Creek at Warm Springs MT

For your home

Pipes: watch the cold

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