Observed 3:00 PM MDT at KBTM

Dewey, MT weather

Sunny and 41°5°.

Forecasts differ

Now 41°5°

Sunny

Wind: 6 mph10 km/h; From the southeast. 35–6 mph10 km/h through 3 AM
Dew point: 30°−1°; Dry · down to 22°−6° by 3 AM
UV index: 4Moderate; Moderate until 5 PM
Pressure: 30.23 inHg1024 hPa; Falling · −0.13 inHg−4.3 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (36°2° then, 38°3° now)

Good hours for

Below 40°4° tonight after 7 PM
Hard freeze tonight 1–10 AM (low 26°−3°)
Low 26°−3° tomorrow at 8 AM
Above 40°4° tomorrow by noon
Hard freeze tomorrow night 1–10 AM (low 28°−2°)

This afternoonNear 45°7° · Clear
TonightDown to 29°−2° by 5 AM · freezing, low 29°−2° · Clear
Tomorrow morningUp to 37°3° by 11 AM · freezing, low 26°−3° · Clear
Tomorrow afternoonUp to 48°9° by 3 PM · Partly cloudy
Tomorrow nightDown to 30°−1° by 3 AM · freezing, low 30°−1° · Mostly cloudy
Monday morningUp to 40°4° by 11 AM · freezing, low 28°−2° · Mostly cloudy
Monday afternoonUp to 49°9° by 2 PM · 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 3p	Sunny	45°7° (likely 39°4° to 45°7°)	42°6°	0%	6 mph10 km/h from SE, gusts 5 mph8 km/h	63%	16%	4
Sat 4p	Sunny	45°7° (likely 38°3° to 45°7°)	43°6°	0%	5 mph8 km/h from SE, gusts 7 mph11 km/h	63%	16%	3
Sat 5p	Sunny	45°7° (likely 36°2° to 45°7°)	43°6°	0%	5 mph8 km/h from ESE, gusts 8 mph13 km/h	63%	13%	2
Sat 6p	Sunny	40°4° (likely 33°1° to 42°6°)	37°3°	0%	5 mph8 km/h from ESE, gusts 6 mph10 km/h	76%	2%	1
Sat 7p	Clear	37°3° (likely 30°−1° to 38°3°)	33°1°	0%	5 mph8 km/h from SE, gusts 4 mph6 km/h	77%	3%	0
Sat 8p	Clear	34°1° (likely 29°−2° to 36°2°)	30°−1°	0%	5 mph8 km/h from SE, gusts 3 mph5 km/h	77%	10%	0
Sat 9p	Clear	33°1° (likely 28°−2° to 35°2°)	28°−2°	0%	6 mph10 km/h from ESE, gusts 2 mph4 km/h	77%	10%	0
Sat 10p	Clear	33°1° (likely 27°−3° to 36°2°)	28°−2°	0%	6 mph10 km/h from E, gusts 4 mph7 km/h	77%	1%	0
Sat 11p	Clear	33°1° (likely 27°−3° to 35°2°)	29°−2°	0%	5 mph8 km/h from E, gusts 5 mph8 km/h	75%	17%	0
Sun 12a	Clear	33°1° (likely 26°−3° to 35°2°)	29°−2°	0%	5 mph8 km/h from E, gusts 4 mph6 km/h	73%	6%	0
Sun 1a	Clear	32°0° (likely 26°−3° to 35°2°)	27°−3°	0%	5 mph8 km/h from E, gusts 2 mph3 km/h	73%	10%	0
Sun 2a	Clear	31°−1° (likely 25°−4° to 36°2°)	28°−2°	0%	3 mph5 km/h from E, gusts 2 mph4 km/h	72%	4%	0
Sun 3a	Clear	31°−1° (likely 25°−4° to 36°2°)	28°−2°	0%	3 mph5 km/h from ESE, gusts 2 mph3 km/h	70%	1%	0
Sun 4a	Clear	30°−1° (likely 25°−4° to 35°2°)	26°−3°	0%	3 mph5 km/h from ESE, gusts 2 mph4 km/h	70%	0%	0
Sun 5a	Clear	29°−2° (likely 25°−4° to 35°2°)	25°−4°	0%	3 mph5 km/h from ESE, gusts 4 mph6 km/h	71%	3%	0
Sun 6a	Clear	29°−2° (likely 25°−4° to 35°2°)	24°−4°	0%	5 mph8 km/h from ESE, gusts 7 mph11 km/h	71%	2%	0
Sun 7a	Clear	28°−2° (likely 24°−4° to 36°2°)	23°−5°	0%	5 mph8 km/h from ESE, gusts 5 mph9 km/h	77%	0%	0
Sun 8a	Sunny	26°−3° (likely 24°−4° to 36°2°)	20°−7°	0%	5 mph8 km/h from ESE, gusts 6 mph9 km/h	77%	0%	0
Sun 9a	Sunny	28°−2° (likely 25°−4° to 37°3°)	23°−5°	0%	5 mph8 km/h from E, gusts 7 mph12 km/h	77%	0%	0
Sun 10a	Sunny	33°1° (likely 31°−1° to 41°5°)	29°−2°	0%	5 mph8 km/h from E, gusts 9 mph14 km/h	74%	3%	1
Sun 11a	Mostly sunny	37°3° (likely 37°3° to 42°6°)	33°1°	0%	5 mph8 km/h from E, gusts 12 mph20 km/h	73%	46%	2
Sun 12p	Mostly sunny	43°6° (likely 40°4° to 44°7°)	39°4°	0%	6 mph10 km/h from E, gusts 14 mph22 km/h	68%	49%	3
Sun 1p	Mostly sunny	46°8° (likely 42°6° to 46°8°)	43°6°	0%	6 mph10 km/h from ESE, gusts 14 mph23 km/h	67%	53%	4
Sun 2p	Mostly sunny	46°8° (likely 43°6° to 48°9°)	43°6°	0%	6 mph10 km/h from ESE, gusts 14 mph23 km/h	62%	52%	4
Sun 3p	Partly sunny	48°9° (likely 43°6° to 48°9°)	45°7°	0%	7 mph11 km/h from ESE, gusts 14 mph22 km/h	58%	50%	3
Sun 4p	Partly sunny	47°8° (likely 42°6° to 48°9°)	44°7°	0%	6 mph10 km/h from ESE, gusts 14 mph23 km/h	58%	50%	2
Sun 5p	Mostly cloudy	46°8° (likely 40°4° to 47°8°)	43°6°	0%	6 mph10 km/h from E, gusts 14 mph22 km/h	60%	50%	1
Sun 6p	Mostly cloudy	42°6° (likely 36°2° to 44°7°)	38°3°	0%	6 mph10 km/h from E, gusts 11 mph18 km/h	72%	50%	1
Sun 7p	Mostly cloudy	36°2° (likely 33°1° to 41°5°)	31°−1°	0%	6 mph10 km/h from E, gusts 12 mph19 km/h	77%	58%	0
Sun 8p	Mostly cloudy	34°1° (likely 31°−1° to 40°4°)	29°−2°	0%	6 mph10 km/h from E, gusts 11 mph18 km/h	79%	61%	0
Sun 9p	Mostly cloudy	33°1° (likely 30°−1° to 39°4°)	28°−2°	0%	6 mph10 km/h from ESE, gusts 11 mph17 km/h	80%	72%	0
Sun 10p	Cloudy	33°1° (likely 29°−2° to 39°4°)	28°−2°	0%	6 mph10 km/h from ESE, gusts 10 mph16 km/h	80%	65%	0
Sun 11p	Cloudy	33°1° (likely 29°−2° to 38°3°)	28°−2°	0%	6 mph10 km/h from ESE, gusts 10 mph15 km/h	79%	67%	0
Mon 12a	Cloudy	33°1° (likely 28°−2° to 38°3°)	27°−3°	0%	7 mph11 km/h from SE, gusts 10 mph16 km/h	79%	82%	0
Mon 1a	Cloudy	31°−1° (likely 28°−2° to 37°3°)	24°−4°	0%	7 mph11 km/h from SE, gusts 8 mph13 km/h	78%	83%	0
Mon 2a	Cloudy	31°−1° (likely 28°−2° to 37°3°)	24°−4°	0%	7 mph11 km/h from SE, gusts 10 mph16 km/h	77%	83%	0
Mon 3a	Cloudy	30°−1° (likely 27°−3° to 36°2°)	23°−5°	0%	7 mph11 km/h from SSE, gusts 10 mph16 km/h	77%	86%	0
Mon 4a	Cloudy	30°−1° (likely 26°−3° to 36°2°)	23°−5°	0%	7 mph11 km/h from SSE, gusts 7 mph12 km/h	77%	88%	0
Mon 5a	Cloudy	30°−1° (likely 26°−3° to 36°2°)	23°−5°	0%	7 mph11 km/h from SSE, gusts 7 mph11 km/h	78%	91%	0
Mon 6a	Cloudy	28°−2° (likely 26°−3° to 36°2°)	19°−7°	0%	9 mph14 km/h from SSE, gusts 7 mph12 km/h	78%	91%	0
Mon 7a	Cloudy	29°−2° (likely 29°−2° to 36°2°)	20°−7°	0%	9 mph14 km/h from SSE, gusts 8 mph12 km/h	82%	87%	0
Mon 8a	Cloudy	29°−2° (likely 29°−2° to 37°3°)	20°−7°	0%	9 mph14 km/h from SSE, gusts 8 mph12 km/h	83%	94%	0
Mon 9a	Cloudy	30°−1° (likely 30°−1° to 38°3°)	22°−6°	0%	9 mph14 km/h from S, gusts 10 mph16 km/h	82%	56%	0
Mon 10a	Mostly cloudy	34°1° (likely 34°1° to 42°6°)	27°−3°	0%	9 mph14 km/h from S, gusts 10 mph17 km/h	80%	66%	1
Mon 11a	Cloudy	40°4° (likely 38°3° to 45°7°)	34°1°	0%	9 mph14 km/h from S, gusts 11 mph18 km/h	76%	95%	2
Mon 12p	Cloudy	45°7° (likely 41°5° to 48°9°)	41°5°	10%	8 mph13 km/h from SSE, gusts 11 mph18 km/h	72%	92%	3
Mon 1p	Partly sunny	48°9° (likely 42°6° to 51°11°)	44°7°	10%	8 mph13 km/h from SSE, gusts 11 mph17 km/h	68%	79%	3
Mon 2p	Partly sunny	49°9° (likely 45°7° to 53°12°)	46°8°	10%	8 mph13 km/h from SSE, gusts 12 mph20 km/h	64%	52%	3

Days ahead

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

Today, Oct 24. Mostly sunny. High 45°7°, low 26°−3°. Typical 52°11° / 21°−6°. Dry. Forecasts differ.
1. Afternoon
  noon–6 PM
  Sunny, 45°7°
  Dry
2. Evening
  6 PM–midnight
  Clear, 34°1°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 29°−2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 45. Southeast wind around 6 mph.
Tonight: Mostly clear. Low around 26, with temperatures rising to around 29 overnight. East southeast wind around 6 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
39°4°–45°7°
Low, likely
19°−7°–27°−3°
Typical high / low
52°11° / 21°−6°
Wind
7 mph10 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 48°9°, low 27°−3°. Typical 51°11° / 20°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 26°−3°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Mostly cloudy, 34°1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 30°−1°
  Dry
Official NWS forecast
Day: Sunny, with a high near 48. East southeast wind around 7 mph.
Night: Mostly cloudy, with a low around 27. Southeast wind around 7 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
43°6°–48°9°
Low, likely
24°−4°–35°2°
Typical high / low
51°11° / 20°−7°
Wind
11 mph17 km/h, gusts 17 mph27 km/h
UV peak
4
Monday, Oct 26. Mostly cloudy. High 50°10°, low 30°−1°. Typical 50°10° / 20°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 40°5°
  60% chance · 0.08 in1.9 mm
4. Overnight
  midnight–6 AM
  Snow, 36°2°
  60% chance · 0.3 in0.7 cm
Official NWS forecast
Day: Partly sunny, with a high near 50. South southeast wind around 10 mph.
Night: A chance of rain and snow before 9pm, then rain and snow likely. Mostly cloudy, with a low around 30. South southwest wind around 10 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
45°7°–52°11°
Low, likely
25°−4°–35°2°
Typical high / low
50°10° / 20°−7°
Wind
11 mph17 km/h, gusts 23 mph37 km/h
UV peak
3
Tuesday, Oct 27. Snow. High 44°7°, low 23°−5°. Typical 50°10° / 20°−7°. Snow 0–2 in0–5 cm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 35°2°
  60% chance · 0.1 in0.3 cm
2. Afternoon
  noon–6 PM
  Cloudy, 42°5°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 35°1°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 28°−2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 44. West wind 10 to 16 mph, with gusts as high as 22 mph. New snow accumulation of less than one inch possible.
Night: Mostly cloudy, with a low around 23. West southwest wind 7 to 10 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
36°2°–44°7°
Low, likely
23°−5°–34°1°
Typical high / low
50°10° / 20°−7°
Wind
13 mph21 km/h, gusts 28 mph45 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 45°7°, low 25°−4°. Typical 49°9° / 20°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 27°−3°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Clear, 33°1°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 29°−2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 45.
Night: Partly cloudy, with a low around 25.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–45°7°
Low, likely
19°−7°–31°−1°
Typical high / low
49°9° / 20°−7°
Wind
20 mph32 km/h, gusts 36 mph57 km/h
UV peak
4
Thursday, Oct 29. Mostly cloudy. High 45°7°, low 27°−3°. Typical 49°9° / 19°−7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 44°7°
  30% chance · 0.01 in0.3 mm
3. Evening
  6 PM–midnight
  Cloudy, 37°3°
  40% chance · 0.02 in0.5 mm
4. Overnight
  midnight–6 AM
  Cloudy, 31°0°
  40% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 45.
Night: A chance of rain and snow. Mostly cloudy, with a low around 27. New snow accumulation of less than half an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
39°4°–47°8°
Low, likely
21°−6°–31°−1°
Typical high / low
49°9° / 19°−7°
Wind
15 mph23 km/h, gusts 26 mph41 km/h
UV peak
3
Friday, Oct 30. Snow. High 45°7°, low 24°−4°. Typical 48°9° / 19°−7°. Snow 0.08 in2 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Fog, 31°−1°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 41°5°
  40% chance · 0.05 in1.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 35°1°
  40% chance · 0.03 in0.7 mm
4. Overnight
  midnight–6 AM
  Cloudy, 26°−4°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before 3pm, then a chance of rain and snow. Partly sunny, with a high near 45. New snow accumulation of less than half an inch possible.
Night: A slight chance of rain and snow. Mostly cloudy, with a low around 24. Little or no snow accumulation expected.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
37°3°–45°7°
Low, likely
20°−7°–34°1°
Typical high / low
48°9° / 19°−7°
Wind
8 mph12 km/h, gusts 23 mph37 km/h
UV peak
1
Saturday, Oct 31. Drizzle. High 36°2°, low 21°−6°. Typical 48°9° / 19°−7°. Rain 0.05 in1.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 26°−3°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 35°2°
  Dry
3. Evening
  6 PM–midnight
  Clear, 29°−1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 26°−3°
  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
32°0°–41°5°
Low, likely
10°−12°–31°−1°
Typical high / low
48°9° / 19°−7°
Wind
15 mph23 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 40°4°, low 22°−6°. Typical 47°8° / 18°−8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 28°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Clear, 32°0°
  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 differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
35°2°–43°6°
Low, likely
18°−8°–24°−4°
Typical high / low
47°8° / 18°−8°
Wind
8 mph12 km/h, gusts 26 mph41 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 39°4°, low 24°−4°. Typical 46°8° / 18°−8°. Rain 0.02 in0.5 mm, 10% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 31°0°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 29°−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
33°1°–46°8°
Low, likely
15°−9°–29°−2°
Typical high / low
46°8° / 18°−8°
Wind
7 mph12 km/h, gusts 46 mph74 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 45°, low 26°.
Tomorrow
Dry, high 48°, low 27°, warming up.
Monday
Dry, high 50°, low 30°.
Rest of week
Highs 36–45°; chance of precipitation on Tuesday, Friday.

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

Wise River at Wise River

4.9 mi

Level: 1.1 ft

Reading from Sat 2:15 PM · NWS gauge page

Big Hole River at Maiden Rock near Divide

7.6 mi

Level: 3.4 ft
Flow: 697 cfs

Reading from Sat 1:45 PM · NWS gauge page

Big Hole River near Wise River

12 mi

Level: 3.2 ft

Reading from Sat 2:45 PM · NWS gauge page

Big Hole River near Melrose

19 mi

Below flood stage

Level: 2.1 ft
Flow: 634 cfs

Reading from Sat 2:15 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 58Typical 211

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 44
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 6 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 30°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?

Wise River 3 Wnw · official normals 1991–2020 · records 1943–2026

Oct 24, today vs a typical year

Today’s expected high is 7°4° colder than typical.

Last 7 days vs normal

On average 8°4° warmer than normal (daily mean temperature).

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

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

Sun & moon

Sun

Daylight: 10 h 29 min; Losing 3 min 3 s a day; shortest Dec 21, 1 h 49 min less
Golden hour: 5:48–6:48 PM; Morning 7:41–8:42 AM
Blue hour: 6:48–7:00 PM; Morning 7:30–7:41 AM; first light 7:30 AM

Stars tonight? Fair

Clear 7 PM–7:31 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:15 AM · rises 5:30 PM
Full moon: Oct 25
New moon: Nov 9

Looking southwest from Dewey. The highest point on the skyline is about 8,400 ft, 12 mi away.Skyline from USGS elevation data, heights drawn up to 2.5× taller. Sky, sun and moon as they are now.