Model estimate for 5:00 AM MDT (no recent station report)

Greycliff, MT weather

Clear and 28°−2°, freeze watch tonight, low 26°−3°.

Mostly agree

Now 28°−2°

Clear · Feels like 21°−6°

Feels like: 21°−6°; Wind chill from 7 mph11 km/h wind · air 28°−2°
Wind: 7 mph11 km/hgusts 12 mph20 km/h; From the west. Up to 8 mph13 km/h through 5 PM
Dew point: 28°−2°; Dry, static shocks likely
Humidity: 100%; Air 28°−2°, dew point 28°−2° · frost likely
UV index: 0Low; Moderate 1–3 PM · peak 3

Light snow now, through the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze until 11 AM (low 26°−3°)
Above 40°4° today by noon
Below 40°4° tonight after 8 PM
Hard freeze tonight midnight–11 AM (low 24°−4°)
Hard freeze tomorrow night from 11 PM (low 26°−3°)

This morningUp to 35°2° by 11 AM · freezing, low 26°−3° · Clear
This afternoonUp to 48°9° by 4 PM · Clear
TonightDown to 26°−3° by 4 AM · freezing, low 26°−3° · Clear
Tomorrow morningUp to 36°2° by 11 AM · freezing, low 24°−4° · Clear
Tomorrow afternoonUp to 47°8° by 4 PM · Clear
Tomorrow nightDown to 26°−3° by 4 AM · freezing, low 26°−3° · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 5a	Clear	28°−2° (likely 28°−2° to 33°1°)	21°−6°	0%	7 mph11 km/h from W, gusts 12 mph20 km/h	100%	1%	0
Sat 6a	Clear	27°−3° (likely 27°−3° to 32°0°)	23°−5°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	100%	0%	0
Sat 7a	Clear	26°−3° (likely 26°−3° to 31°−1°)	26°−3°	0%	2 mph3 km/h from W, gusts 5 mph9 km/h	100%	0%	0
Sat 8a	Sunny	26°−3° (likely 26°−3° to 31°−1°)	26°−3°	0%	2 mph3 km/h from WSW, gusts 4 mph7 km/h	100%	0%	0
Sat 9a	Sunny	28°−2° (likely 28°−2° to 33°1°)	24°−4°	0%	3 mph5 km/h from WSW, gusts 4 mph7 km/h	100%	2%	0
Sat 10a	Sunny	30°−1° (likely 30°−1° to 36°2°)	25°−4°	0%	5 mph8 km/h from SW, gusts 4 mph7 km/h	100%	0%	1
Sat 11a	Sunny	35°2° (likely 35°2° to 40°4°)	30°−1°	0%	6 mph10 km/h from SSE, gusts 8 mph12 km/h	80%	0%	1
Sat 12p	Sunny	40°4° (likely 40°4° to 44°7°)	35°2°	0%	7 mph11 km/h from ESE, gusts 8 mph14 km/h	60%	0%	2
Sat 1p	Sunny	44°7° (likely 44°7° to 47°8°)	39°4°	0%	8 mph13 km/h from ESE, gusts 10 mph16 km/h	51%	0%	3
Sat 2p	Sunny	46°8° (likely 46°8° to 48°9°)	42°6°	0%	8 mph13 km/h from ESE, gusts 12 mph19 km/h	44%	0%	3
Sat 3p	Sunny	47°8° (likely 47°8° to 50°10°)	44°7°	0%	8 mph13 km/h from ESE, gusts 13 mph20 km/h	41%	0%	2
Sat 4p	Sunny	48°9° (likely 48°9° to 51°11°)	45°7°	0%	7 mph11 km/h from ESE, gusts 12 mph19 km/h	41%	0%	1
Sat 5p	Sunny	47°8° (likely 47°8° to 51°11°)	44°7°	0%	6 mph10 km/h from ESE, gusts 10 mph17 km/h	42%	0%	0
Sat 6p	Clear	44°7° (likely 43°6° to 48°9°)	42°6°	0%	5 mph8 km/h from ESE, gusts 11 mph18 km/h	51%	0%	0
Sat 7p	Clear	42°6° (likely 41°5° to 44°7°)	42°6°	0%	2 mph3 km/h from ESE, gusts 11 mph17 km/h	58%	0%	0
Sat 8p	Clear	38°3° (likely 38°3° to 41°5°)	38°3°	0%	1 mph2 km/h from ESE, gusts 8 mph13 km/h	62%	0%	0
Sat 9p	Clear	36°2° (likely 36°2° to 39°4°)	36°2°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	70%	0%	0
Sat 10p	Clear	34°1° (likely 34°1° to 38°3°)	34°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	76%	0%	0
Sat 11p	Clear	33°1° (likely 33°1° to 36°2°)	33°1°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	81%	0%	0
Sun 12a	Clear	31°−1° (likely 31°−1° to 35°2°)	31°−1°	0%	1 mph2 km/h from WNW, gusts 3 mph5 km/h	89%	0%	0
Sun 1a	Clear	29°−2° (likely 29°−2° to 33°1°)	29°−2°	0%	2 mph3 km/h from WNW, gusts 4 mph6 km/h	93%	0%	0
Sun 2a	Clear	28°−2° (likely 28°−2° to 33°1°)	28°−2°	0%	1 mph2 km/h from WNW, gusts 4 mph6 km/h	95%	0%	0
Sun 3a	Clear	27°−3° (likely 27°−3° to 32°0°)	27°−3°	0%	1 mph2 km/h from WNW, gusts 4 mph6 km/h	98%	2%	0
Sun 4a	Clear	26°−3° (likely 26°−3° to 31°−1°)	26°−3°	0%	1 mph2 km/h from WNW, gusts 4 mph6 km/h	98%	0%	0
Sun 5a	Clear	26°−3° (likely 26°−3° to 30°−1°)	26°−3°	0%	1 mph2 km/h from WNW, gusts 4 mph7 km/h	99%	0%	0
Sun 6a	Clear	26°−3° (likely 26°−3° to 30°−1°)	26°−3°	0%	0 mph0 km/h, gusts 4 mph6 km/h	97%	1%	0
Sun 7a	Clear	24°−4° (likely 24°−4° to 30°−1°)	24°−4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	99%	5%	0
Sun 8a	Sunny	24°−4° (likely 24°−4° to 30°−1°)	24°−4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	4%	0
Sun 9a	Sunny	26°−3° (likely 26°−3° to 33°1°)	26°−3°	0%	2 mph3 km/h from NNE, gusts 4 mph6 km/h	99%	2%	0
Sun 10a	Sunny	31°−1° (likely 31°−1° to 38°3°)	31°−1°	0%	2 mph3 km/h from NNE, gusts 3 mph5 km/h	91%	3%	1
Sun 11a	Sunny	36°2° (likely 36°2° to 43°6°)	36°2°	0%	2 mph3 km/h from NNE, gusts 4 mph6 km/h	74%	3%	2
Sun 12p	Sunny	40°4° (likely 40°4° to 47°8°)	35°2°	0%	7 mph11 km/h from ENE, gusts 9 mph14 km/h	60%	0%	3
Sun 1p	Sunny	44°7° (likely 44°7° to 50°10°)	40°4°	0%	7 mph11 km/h from ENE, gusts 10 mph16 km/h	54%	0%	4
Sun 2p	Sunny	46°8° (likely 46°8° to 53°12°)	42°6°	0%	7 mph11 km/h from ENE, gusts 12 mph19 km/h	49%	0%	4
Sun 3p	Sunny	46°8° (likely 46°8° to 54°12°)	42°6°	0%	9 mph14 km/h from E, gusts 13 mph22 km/h	44%	0%	3
Sun 4p	Sunny	47°8° (likely 46°8° to 54°12°)	42°6°	0%	9 mph14 km/h from E, gusts 14 mph23 km/h	44%	0%	2
Sun 5p	Sunny	45°7° (likely 45°7° to 52°11°)	41°5°	0%	9 mph14 km/h from E, gusts 15 mph24 km/h	46%	0%	1
Sun 6p	Clear	42°6° (likely 41°5° to 47°8°)	39°4°	0%	5 mph8 km/h from E, gusts 14 mph22 km/h	54%	0%	0
Sun 7p	Clear	40°4° (likely 38°3° to 42°6°)	37°3°	0%	5 mph8 km/h from E, gusts 9 mph14 km/h	60%	0%	0
Sun 8p	Clear	36°2° (likely 35°2° to 40°4°)	32°0°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	63%	1%	0
Sun 9p	Clear	35°2° (likely 33°1° to 37°3°)	35°2°	0%	1 mph2 km/h from N, gusts 5 mph8 km/h	70%	1%	0
Sun 10p	Clear	33°1° (likely 31°−1° to 36°2°)	33°1°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	76%	1%	0
Sun 11p	Clear	32°0° (likely 27°−3° to 35°2°)	32°0°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	80%	2%	0
Mon 12a	Clear	30°−1° (likely 25°−4° to 35°2°)	30°−1°	5%	1 mph2 km/h from WNW, gusts 4 mph7 km/h	86%	5%	0
Mon 1a	Mostly clear	29°−2° (likely 20°−7° to 35°2°)	29°−2°	5%	1 mph2 km/h from WNW, gusts 3 mph5 km/h	88%	12%	0
Mon 2a	Clear	28°−2° (likely 19°−7° to 35°2°)	28°−2°	5%	1 mph2 km/h from WNW, gusts 3 mph5 km/h	90%	19%	0
Mon 3a	Partly cloudy	27°−3° (likely 18°−8° to 34°1°)	27°−3°	5%	0 mph0 km/h, gusts 3 mph5 km/h	93%	26%	0
Mon 4a	Partly cloudy	26°−3° (likely 20°−7° to 33°1°)	26°−3°	5%	0 mph0 km/h, gusts 4 mph6 km/h	95%	28%	0

Days ahead

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

Today, Oct 24. Fog. High 49°9°, low 26°−3°. Typical 55°13° / 32°0°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 26°−3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Clear, 38°3°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 26°−3°
  Dry
Official NWS forecast
Today: Patchy fog before 9am. Sunny. High near 49, with temperatures falling to around 47 in the afternoon. Southwest wind 2 to 8 mph.
Tonight: Partly cloudy. Low around 26, with temperatures rising to around 28 overnight. West wind around 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–51°11°
Low, likely
26°−3°–31°−1°
Typical high / low
55°13° / 32°0°
Wind
21 mph34 km/h, gusts 33 mph54 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 47°8°, low 24°−4°. Typical 55°13° / 32°0°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 24°−4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 26°−3°
  Dry
Official NWS forecast
Day: Areas of fog before 9am. Sunny. High near 47, with temperatures falling to around 45 in the afternoon. Northeast wind 0 to 9 mph.
Night: Mostly clear, with a low around 24. North wind 0 to 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
47°8°–54°12°
Low, likely
24°−4°–30°−1°
Typical high / low
55°13° / 32°0°
Wind
11 mph17 km/h, gusts 20 mph33 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 49°9°, low 28°−2°. Typical 54°12° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 40°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny. High near 49, with temperatures falling to around 47 in the afternoon. East wind 0 to 8 mph.
Night: Partly cloudy. Low around 28, with temperatures rising to around 30 overnight. Southwest wind 0 to 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
47°8°–53°12°
Low, likely
22°−6°–31°−1°
Typical high / low
54°12° / 31°−1°
Wind
10 mph17 km/h, gusts 16 mph25 km/h
UV peak
4
Tuesday, Oct 27. Showers. High 51°11°, low 30°−1°. Typical 54°12° / 31°−1°. Rain 0.03 in0.8 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 40°4°
  30% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Cloudy, 52°11°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 42°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny. High near 51, with temperatures falling to around 48 in the afternoon. West wind 1 to 25 mph. Chance of precipitation is 40%.
Night: A chance of rain showers. Mostly cloudy, with a low around 30. West wind 8 to 17 mph. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
51°11°–53°12°
Low, likely
30°−1°–38°3°
Typical high / low
54°12° / 31°−1°
Wind
22 mph35 km/h, gusts 49 mph78 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 53°12°, low 25°−4°. Typical 53°12° / 31°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 42°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. High near 53, with temperatures falling to around 50 in the afternoon. Southwest wind 3 to 7 mph.
Night: Partly cloudy. Low around 25, with temperatures rising to around 27 overnight. South southeast wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–56°13°
Low, likely
25°−4°–35°2°
Typical high / low
53°12° / 31°−1°
Wind
13 mph21 km/h, gusts 43 mph69 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 49°9°, low 26°−3°. Typical 53°12° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 41°5°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 35°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny. High near 49, with temperatures falling to around 46 in the afternoon. Southeast wind 1 to 6 mph.
Night: A slight chance of snow showers before midnight. Mostly cloudy. Low around 26, with temperatures rising to around 28 overnight. West northwest wind 1 to 5 mph. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
42°6°–52°11°
Low, likely
25°−4°–33°1°
Typical high / low
53°12° / 30°−1°
Wind
8 mph13 km/h, gusts 19 mph30 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 52°11°, low 34°1°. Typical 52°11° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 42°6°
  30% chance
4. Overnight
  midnight–6 AM
  Snow, 36°2°
  20% chance · 0.02 in0.5 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain and snow showers after noon. Mostly sunny. High near 52, with temperatures falling to around 49 in the afternoon. Northwest wind 1 to 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
42°6°–56°13°
Low, likely
31°−1°–38°3°
Typical high / low
52°11° / 30°−1°
Wind
11 mph17 km/h
UV peak
3
Saturday, Oct 31. Snow. High 44°7°, low 33°1°. Typical 52°11° / 30°−1°. Snow 0–1 in0–3 cm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  20% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 38°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
40°4°–51°11°
Low, likely
31°−1°–37°3°
Typical high / low
52°11° / 30°−1°
Wind
19 mph31 km/h
UV peak
3
Sunday, Nov 1. Partly sunny. High 46°8°, low 31°−1°. Typical 52°11° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 33°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 46°8°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 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
41°5°–54°12°
Low, likely
23°−5°–37°3°
Typical high / low
52°11° / 30°−1°
Wind
31 mph50 km/h, gusts 43 mph69 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 49°9°, low 35°2°. Typical 51°11° / 29°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 51°11°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 42°5°
  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°–62°17°
Low, likely
34°1°–38°3°
Typical high / low
51°11° / 29°−2°
Wind
11 mph17 km/h, gusts 19 mph31 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 49°, low 26°.
Tomorrow
Dry, high 47°, low 24°.
Monday
Dry, high 49°, low 28°.
Rest of week
Mostly dry, highs 44–53°.

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

Sweet Grass Creek near Big Timber

2.1 mi

Level: 4.2 ft

Reading from Sat 4 AM · NWS gauge page

Boulder River at Big Timber

9.2 mi

Below flood stage

Level: 1.2 ft
Flow: 127 cfs

Reading from Sat 4 AM · NWS gauge page

East Boulder River near Mcleod

23 mi

Level: 2.1 ft
Flow: 9 cfs

Reading from Sat 4:30 AM · NWS gauge page

Stillwater River (South Central MT) near Absarokee

23 mi

Below flood stage

Level: 1.6 ft
Flow: 429 cfs

Reading from Sat 4:15 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 63% less heating than a typical week.

This week 59Typical 159

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 46
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 12 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 28°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?

Big Timber · official normals 1991–2020 · records 1894–2026

Oct 24, today vs a typical year

Today’s expected high is 6°3° colder than typical.

Last 7 days vs normal

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

Greycliff 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: 5:35–6:36 PM; Morning 7:29–8:30 AM
Blue hour: 6:36–6:48 PM; Morning 7:17–7:29 AM; first light 7:17 AM

Stars tonight? Good

Clear 5:51–7:17 AM; moon 96% lit but below the horizon.

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:02 AM · rises 5:18 PM
Full moon: Oct 25
New moon: Nov 9

Looking south from Greycliff. The highest point on the skyline is about 12,600 ft, 34 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.