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

Grass Range, MT weather

Sunny and 28°−2°.

Mostly agree

Now 28°−2°

Sunny · Feels like 19°−7°

Feels like: 19°−7°; Wind chill from 9 mph14 km/h wind · air 28°−2°
Wind: 9 mph14 km/h; From the west. 610–13 mph21 km/h through 8 PM
Dew point: 20°−7°; Dry, static shocks likely
UV index: 0Low; Moderate 12–4 PM · peak 4

Light snow now, through the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze until 10 AM (low 28°−2°)
Above 40°4° today by noon
Below 40°4° tonight after 7 PM
Hard freeze tonight midnight–10 AM (low 25°−4°)
Below freezing tomorrow night from 11 PM (low 30°−1°)

This morningUp to 39°4° by 11 AM · freezing, low 28°−2° · Clear
This afternoonUp to 48°9° by 3 PM · Clear
TonightDown to 26°−3° by 5 AM · freezing, low 26°−3° · Clear
Tomorrow morningUp to 36°2° by 11 AM · freezing, low 25°−4° · Clear
Tomorrow afternoonUp to 44°7° by 5 PM · Clear
Tomorrow nightDown to 30°−1° by 5 AM · freezing, low 30°−1° · Partly 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	28°−2° (likely 28°−2° to 32°0°)	19°−7°	0%	9 mph14 km/h from W, gusts 13 mph21 km/h	71%	0%	0
Sat 9a	Sunny	30°−1° (likely 30°−1° to 34°1°)	23°−5°	0%	8 mph13 km/h from W, gusts 12 mph19 km/h	62%	0%	0
Sat 10a	Sunny	35°2° (likely 35°2° to 39°4°)	30°−1°	0%	6 mph10 km/h from WSW, gusts 8 mph14 km/h	53%	0%	1
Sat 11a	Sunny	39°4° (likely 39°4° to 43°6°)	35°2°	0%	6 mph10 km/h from WSW, gusts 8 mph13 km/h	45%	0%	2
Sat 12p	Sunny	42°6° (likely 42°6° to 47°8°)	38°3°	0%	7 mph11 km/h from SSW, gusts 10 mph16 km/h	39%	0%	3
Sat 1p	Sunny	45°7° (likely 45°7° to 49°9°)	41°5°	0%	9 mph14 km/h from S, gusts 12 mph20 km/h	35%	0%	4
Sat 2p	Sunny	47°8° (likely 47°8° to 50°10°)	42°6°	0%	10 mph16 km/h from SSE, gusts 18 mph28 km/h	34%	0%	4
Sat 3p	Sunny	48°9° (likely 48°9° to 51°11°)	43°6°	0%	13 mph21 km/h from SSE, gusts 20 mph32 km/h	34%	0%	3
Sat 4p	Sunny	47°8° (likely 47°8° to 51°11°)	42°6°	0%	12 mph19 km/h from SSE, gusts 20 mph33 km/h	34%	0%	2
Sat 5p	Sunny	46°8° (likely 46°8° to 50°10°)	41°5°	0%	9 mph14 km/h from SSE, gusts 19 mph31 km/h	37%	0%	1
Sat 6p	Clear	43°6° (likely 42°6° to 46°8°)	38°3°	0%	8 mph13 km/h from SSE, gusts 15 mph24 km/h	44%	0%	0
Sat 7p	Clear	38°3° (likely 38°3° to 43°6°)	33°1°	0%	7 mph11 km/h from S, gusts 14 mph22 km/h	49%	4%	0
Sat 8p	Partly cloudy	36°2° (likely 36°2° to 42°6°)	30°−1°	0%	8 mph13 km/h from S, gusts 13 mph21 km/h	52%	26%	0
Sat 9p	Clear	35°2° (likely 35°2° to 41°5°)	28°−2°	0%	8 mph13 km/h from S, gusts 16 mph25 km/h	54%	0%	0
Sat 10p	Clear	34°1° (likely 34°1° to 40°4°)	28°−2°	0%	7 mph11 km/h from S, gusts 14 mph22 km/h	56%	7%	0
Sat 11p	Clear	33°1° (likely 33°1° to 38°3°)	29°−2°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	57%	4%	0
Sun 12a	Clear	32°0° (likely 32°0° to 37°3°)	29°−2°	0%	3 mph5 km/h from S, gusts 5 mph9 km/h	60%	1%	0
Sun 1a	Clear	31°−1° (likely 31°−1° to 36°2°)	28°−2°	0%	3 mph5 km/h from S, gusts 7 mph11 km/h	64%	3%	0
Sun 2a	Clear	30°−1° (likely 30°−1° to 35°2°)	30°−1°	0%	2 mph3 km/h from S, gusts 6 mph9 km/h	66%	0%	0
Sun 3a	Clear	29°−2° (likely 29°−2° to 34°1°)	29°−2°	0%	2 mph3 km/h from S, gusts 3 mph5 km/h	69%	0%	0
Sun 4a	Clear	28°−2° (likely 28°−2° to 32°0°)	28°−2°	0%	2 mph3 km/h from SE, gusts 4 mph7 km/h	72%	0%	0
Sun 5a	Clear	26°−3° (likely 25°−4° to 31°−1°)	26°−3°	0%	2 mph3 km/h from SSE, gusts 4 mph7 km/h	74%	1%	0
Sun 6a	Clear	26°−3° (likely 24°−4° to 31°−1°)	26°−3°	0%	1 mph2 km/h from NNW, gusts 5 mph8 km/h	73%	2%	0
Sun 7a	Clear	25°−4° (likely 24°−4° to 31°−1°)	25°−4°	0%	1 mph2 km/h from NNW, gusts 5 mph8 km/h	76%	1%	0
Sun 8a	Sunny	25°−4° (likely 23°−5° to 30°−1°)	25°−4°	0%	1 mph2 km/h from NNW, gusts 5 mph9 km/h	77%	2%	0
Sun 9a	Sunny	27°−3° (likely 26°−3° to 31°−1°)	23°−5°	0%	3 mph5 km/h from NNE, gusts 6 mph10 km/h	73%	2%	0
Sun 10a	Sunny	33°1° (likely 31°−1° to 33°1°)	30°−1°	0%	3 mph5 km/h from NNE, gusts 8 mph13 km/h	60%	6%	1
Sun 11a	Sunny	36°2° (likely 33°1° to 36°2°)	33°1°	0%	3 mph5 km/h from NNE, gusts 9 mph14 km/h	51%	8%	2
Sun 12p	Sunny	39°4° (likely 36°2° to 39°4°)	33°1°	0%	8 mph13 km/h from ENE, gusts 11 mph18 km/h	46%	5%	3
Sun 1p	Sunny	41°5° (likely 38°3° to 41°5°)	36°2°	0%	8 mph13 km/h from ENE, gusts 11 mph18 km/h	43%	2%	4
Sun 2p	Sunny	42°6° (likely 40°4° to 43°6°)	37°3°	0%	8 mph13 km/h from ENE, gusts 11 mph18 km/h	43%	1%	4
Sun 3p	Sunny	43°6° (likely 41°5° to 44°7°)	38°3°	0%	9 mph14 km/h from E, gusts 15 mph23 km/h	44%	2%	3
Sun 4p	Sunny	43°6° (likely 42°6° to 45°7°)	38°3°	0%	9 mph14 km/h from E, gusts 14 mph23 km/h	41%	2%	2
Sun 5p	Sunny	44°7° (likely 41°5° to 46°8°)	39°4°	0%	9 mph14 km/h from E, gusts 15 mph25 km/h	41%	0%	1
Sun 6p	Clear	41°5° (likely 38°3° to 42°6°)	38°3°	0%	5 mph8 km/h from E, gusts 11 mph18 km/h	48%	6%	0
Sun 7p	Clear	38°3° (likely 34°1° to 39°4°)	34°1°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	55%	1%	0
Sun 8p	Clear	35°2° (likely 33°1° to 37°3°)	31°−1°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	58%	1%	0
Sun 9p	Clear	34°1° (likely 31°−1° to 36°2°)	29°−2°	0%	6 mph10 km/h from E, gusts 5 mph8 km/h	60%	0%	0
Sun 10p	Clear	33°1° (likely 31°−1° to 35°2°)	28°−2°	0%	6 mph10 km/h from E, gusts 6 mph10 km/h	63%	6%	0
Sun 11p	Mostly clear	32°0° (likely 31°−1° to 34°1°)	26°−3°	0%	6 mph10 km/h from E, gusts 6 mph9 km/h	65%	20%	0
Mon 12a	Clear	32°0° (likely 30°−1° to 34°1°)	27°−3°	5%	5 mph8 km/h from ESE, gusts 6 mph9 km/h	68%	35%	0
Mon 1a	Partly cloudy	32°0° (likely 28°−2° to 34°1°)	27°−3°	5%	5 mph8 km/h from ESE, gusts 6 mph10 km/h	71%	46%	0
Mon 2a	Partly cloudy	32°0° (likely 29°−2° to 34°1°)	27°−3°	5%	5 mph8 km/h from ESE, gusts 8 mph12 km/h	74%	55%	0
Mon 3a	Cloudy	31°−1° (likely 31°−1° to 34°1°)	26°−3°	5%	5 mph8 km/h from SE, gusts 11 mph18 km/h	76%	58%	0
Mon 4a	Partly cloudy	31°−1° (likely 31°−1° to 34°1°)	26°−3°	5%	5 mph8 km/h from SE, gusts 11 mph18 km/h	78%	56%	0
Mon 5a	Partly cloudy	30°−1° (likely 30°−1° to 34°1°)	25°−4°	5%	5 mph8 km/h from SE, gusts 11 mph17 km/h	80%	51%	0
Mon 6a	Mostly cloudy	30°−1° (likely 30°−1° to 34°1°)	24°−4°	0%	6 mph10 km/h from SE, gusts 11 mph18 km/h	81%	68%	0
Mon 7a	Mostly cloudy	30°−1° (likely 30°−1° to 33°1°)	24°−4°	0%	6 mph10 km/h from SE, gusts 11 mph17 km/h	84%	58%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 48°9°, low 25°−4°. Typical 55°13° / 30°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 28°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Clear, 36°2°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 26°−3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 48. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Tonight: Mostly clear, with a low around 25. South southeast wind 2 to 8 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–51°11°
Low, likely
25°−4°–31°−1°
Typical high / low
55°13° / 30°−1°
Wind
22 mph35 km/h, gusts 45 mph72 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 44°7°, low 29°−2°. Typical 55°13° / 30°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 25°−4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 35°2°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 30°−1°
  Dry
Official NWS forecast
Day: Sunny, with a high near 44. Northeast wind 1 to 9 mph.
Night: Partly cloudy, with a low around 29. East southeast wind around 6 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
55°13° / 30°−1°
Wind
10 mph16 km/h, gusts 18 mph29 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 48°9°, low 32°0°. Typical 54°12° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 40°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 34°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 48. Southeast wind 6 to 16 mph, with gusts as high as 24 mph.
Night: Partly cloudy, with a low around 32. Southeast wind 6 to 14 mph, with gusts as high as 21 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
44°7°–51°11°
Low, likely
28°−2°–32°0°
Typical high / low
54°12° / 30°−1°
Wind
16 mph26 km/h, gusts 27 mph44 km/h
UV peak
3
Tuesday, Oct 27. Rain. High 50°10°, low 32°0°. Typical 54°12° / 29°−2°. Rain 0.16 in4.1 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 33°0°
  40% chance · 0.3 in0.7 cm
2. Afternoon
  noon–6 PM
  Cloudy, 47°8°
  40% chance · 0.05 in1.4 mm
3. Evening
  6 PM–midnight
  Clear, 42°6°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 50. South wind 5 to 12 mph, with gusts as high as 20 mph.
Night: A chance of rain. Mostly cloudy, with a low around 32. West northwest wind 7 to 15 mph, with gusts as high as 21 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
46°8°–50°10°
Low, likely
29°−2°–36°2°
Typical high / low
54°12° / 29°−2°
Wind
15 mph24 km/h, gusts 27 mph44 km/h
UV peak
3
Wednesday, Oct 28. Mostly cloudy. High 48°9°, low 27°−3°. Typical 54°12° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 33°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 48.
Night: Partly cloudy, with a low around 27.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–55°13°
Low, likely
27°−3°–38°3°
Typical high / low
54°12° / 29°−2°
Wind
16 mph26 km/h, gusts 39 mph63 km/h
UV peak
3
Thursday, Oct 29. Snow. High 44°7°, low 28°−2°. Typical 53°12° / 28°−2°. Snow < 1 in< 2 cm, 10% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 38°3°
  20% chance · 0.1 in0.3 cm
4. Overnight
  midnight–6 AM
  Cloudy, 35°2°
  20% chance · 0.1 in0.3 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 44.
Night: A slight chance of snow before 9pm, then a slight chance of rain and snow between 9pm and midnight. Mostly cloudy, with a low around 28.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
39°4°–47°8°
Low, likely
28°−2°–34°1°
Typical high / low
53°12° / 28°−2°
Wind
17 mph28 km/h, gusts 24 mph38 km/h
UV peak
3
Friday, Oct 30. Snow. High 48°9°, low 31°−1°. Typical 53°12° / 28°−2°. Snow 0–1 in0–3 cm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 35°2°
  20% chance · 0.1 in0.3 cm
2. Afternoon
  noon–6 PM
  Cloudy, 42°5°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 39°4°
  20% chance
4. Overnight
  midnight–6 AM
  Snow, 34°1°
  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 before noon. Partly sunny, with a high near 48. Little or no snow accumulation expected.
Night: A slight chance of rain and snow. Mostly cloudy, with a low around 31.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
35°2°–49°9°
Low, likely
29°−2°–39°4°
Typical high / low
53°12° / 28°−2°
Wind
12 mph19 km/h, gusts 20 mph33 km/h
UV peak
3
Saturday, Oct 31. Snow. High 41°5°, low 29°−2°. Typical 52°11° / 28°−2°. Snow 0–1 in0–3 cm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow, 33°1°
  20% chance · 0.3 in0.7 cm
2. Afternoon
  noon–6 PM
  Cloudy, 41°5°
  Dry
3. Evening
  6 PM–midnight
  Clear, 34°1°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 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
34°1°–51°11°
Low, likely
18°−8°–36°2°
Typical high / low
52°11° / 28°−2°
Wind
13 mph21 km/h, gusts 26 mph41 km/h
UV peak
2
Sunday, Nov 1. Sunny. High 44°7°, low 29°−2°. Typical 52°11° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°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
39°4°–49°9°
Low, likely
18°−8°–33°1°
Typical high / low
52°11° / 27°−3°
Wind
20 mph32 km/h, gusts 30 mph48 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 49°9°, low 35°2°. Typical 52°11° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 38°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Mostly 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
38°3°–59°15°
Low, likely
32°0°–39°4°
Typical high / low
52°11° / 27°−3°
Wind
10 mph16 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 48°, low 25°.
Tomorrow
Dry, high 44°, low 29°, cooling off.
Monday
Dry, high 48°, low 32°, warming up.
Rest of week
Mostly dry, highs 41–50°.

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

Flatwillow Creek near Flatwillow

23 mi

Level: 1.9 ft

Reading from Sat 7:15 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 65% less heating than a typical week.

This week 58Typical 164

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

Comfort

Dry air outside (dew point 20°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?

Grass Range · official normals 1991–2020 · records 1914–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 6°4° warmer than normal (daily mean temperature).

+1°SunOct 18
+8°+4°MonOct 19
+3°+1°TueOct 20
+10°+6°WedOct 21
+12°+6°ThuOct 22
+6°+3°FriOct 23
—SatOct 24

Grass Range weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 25 min; Losing 3 min 12 s a day; shortest Dec 21, 1 h 55 min less
Golden hour: 5:28–6:30 PM; Morning 7:27–8:29 AM
Blue hour: 6:30–6:42 PM; Morning 7:15–7:27 AM; first light 7:15 AM

Stars tonight? Fair

Clear 9 PM–7:16 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:00 AM · rises 5:12 PM
Full moon: Oct 25
New moon: Nov 9

Looking southwest from Grass Range. The highest point on the skyline is about 8,600 ft, 30 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.