What is the weather in Grass Range right now?

Current weather in Grass Range is overcast clouds.

Where can I find the hourly weather forecast for Grass Range?

This page shows hourly weather forecast for Grass Range, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Grass Range updated regularly?

Weather data for Grass Range is updated regularly with the latest available observations and forecasts.

Now · 12:46 PM

Grass Range Weather & Hourly Forecast

United States · Montana · 59032

78°F

Overcast

Feels like: 77°F

💧 Humidity 28% 🌡 Pressure 29.83 inHg 💨 Wind 7 mph 👁 Visibility 6.2 mi ☁ Clouds 100% ☀️ UV index 6.0 · High 🌅 Sunrise 6:29 AM 🌇 Sunset 8:03 PM

Hourly Forecast for Grass Range

Today

1:00 PM

Overcast

78° 💧 None 💨 7 mph H 28%29.83 inHg

4:00 PM

Overcast

82° 💧 None 💨 8 mph H 25%29.77 inHg

7:00 PM

Overcast

83° 💧 None 💨 7 mph H 26%29.74 inHg

10:00 PM

Overcast night

70° 💧 None 💨 10 mph H 48%29.77 inHg

Tomorrow

1:00 AM

Overcast night

66° 💧 None 💨 5 mph H 37%29.74 inHg

4:00 AM

Overcast night

62° 💧 None 💨 5 mph H 40%29.74 inHg

7:00 AM

Overcast

62° 💧 None 💨 3 mph H 43%29.74 inHg

10:00 AM

Overcast

73° 💧 None 💨 1 mph H 31%29.71 inHg

1:00 PM

Overcast

79° 💧 0.01 in 💨 8 mph H 25%29.65 inHg

4:00 PM

Overcast

76° 💧 None 💨 15 mph H 50%29.74 inHg

7:00 PM

Sunny

74° 💧 None 💨 11 mph H 39%29.71 inHg

10:00 PM

Clear night

62° 💧 None 💨 2 mph H 60%29.80 inHg

Sunday

1:00 AM

Mostly cloudy night

59° 💧 None 💨 3 mph H 65%29.77 inHg

4:00 AM

Partly cloudy night

57° 💧 None 💨 5 mph H 63%29.74 inHg

7:00 AM

Light rain

58° 💧 0.07 in 💨 3 mph H 73%29.74 inHg

10:00 AM

Light rain

63° 💧 0.06 in 💨 9 mph H 68%29.80 inHg

Today

1:00 PM

Overcast

78° 💧 None 💨 7 mph H 28%29.83 inHg

2:00 PM

Overcast

78° 💧 None 💨 11 mph H 27%29.83 inHg

3:00 PM

Overcast

79° 💧 None 💨 11 mph H 27%29.80 inHg

4:00 PM

Overcast

82° 💧 None 💨 8 mph H 25%29.77 inHg

5:00 PM

Overcast

85° 💧 None 💨 9 mph H 24%29.77 inHg

6:00 PM

Overcast

87° 💧 None 💨 9 mph H 23%29.74 inHg

7:00 PM

Overcast

83° 💧 None 💨 7 mph H 26%29.74 inHg

8:00 PM

Overcast

76° 💧 None 💨 14 mph H 37%29.77 inHg

9:00 PM

Overcast night

71° 💧 None 💨 11 mph H 55%29.80 inHg

10:00 PM

Overcast night

70° 💧 None 💨 10 mph H 48%29.77 inHg

11:00 PM

Overcast night

68° 💧 None 💨 8 mph H 42%29.77 inHg

Tomorrow

12:00 AM

Overcast night

67° 💧 None 💨 7 mph H 39%29.77 inHg

1:00 AM

Overcast night

66° 💧 None 💨 5 mph H 37%29.74 inHg

2:00 AM

Overcast night

65° 💧 None 💨 4 mph H 37%29.74 inHg

3:00 AM

Overcast night

64° 💧 None 💨 6 mph H 37%29.74 inHg

4:00 AM

Overcast night

62° 💧 None 💨 5 mph H 40%29.74 inHg

5:00 AM

Overcast night

62° 💧 None 💨 4 mph H 41%29.74 inHg

6:00 AM

Overcast night

62° 💧 None 💨 4 mph H 41%29.74 inHg

7:00 AM

Overcast

62° 💧 None 💨 3 mph H 43%29.74 inHg

8:00 AM

Overcast

66° 💧 None 💨 2 mph H 38%29.74 inHg

9:00 AM

Overcast

70° 💧 None 💨 2 mph H 33%29.74 inHg

10:00 AM

Overcast

73° 💧 None 💨 1 mph H 31%29.71 inHg

11:00 AM

Overcast

77° 💧 None 💨 3 mph H 27%29.68 inHg

12:00 PM

Overcast

80° 💧 None 💨 5 mph H 22%29.65 inHg

1:00 PM

Overcast

79° 💧 None 💨 8 mph H 25%29.65 inHg

2:00 PM

Light rain

76° 💧 0.01 in 💨 9 mph H 37%29.71 inHg

3:00 PM

Light rain

77° 💧 0.01 in 💨 18 mph H 37%29.71 inHg

4:00 PM

Overcast

76° 💧 None 💨 15 mph H 50%29.74 inHg

5:00 PM

Overcast

77° 💧 None 💨 14 mph H 43%29.71 inHg

6:00 PM

Mostly cloudy

75° 💧 None 💨 14 mph H 41%29.74 inHg

7:00 PM

Sunny

74° 💧 None 💨 11 mph H 39%29.71 inHg

8:00 PM

Sunny

67° 💧 None 💨 5 mph H 48%29.74 inHg

9:00 PM

Clear night

65° 💧 None 💨 3 mph H 54%29.77 inHg

10:00 PM

Clear night

62° 💧 None 💨 2 mph H 60%29.80 inHg

11:00 PM

Mostly clear night

61° 💧 None 💨 1 mph H 62%29.80 inHg

Sunday

12:00 AM

Partly cloudy night

60° 💧 None 💨 3 mph H 63%29.80 inHg

1:00 AM

Mostly cloudy night

59° 💧 None 💨 3 mph H 65%29.77 inHg

2:00 AM

Partly cloudy night

59° 💧 None 💨 6 mph H 63%29.77 inHg

3:00 AM

Partly cloudy night

58° 💧 None 💨 6 mph H 62%29.74 inHg

4:00 AM

Partly cloudy night

57° 💧 None 💨 5 mph H 63%29.74 inHg

5:00 AM

Mostly cloudy night

57° 💧 None 💨 5 mph H 64%29.74 inHg

6:00 AM

Mostly cloudy night

56° 💧 None 💨 4 mph H 68%29.74 inHg

7:00 AM

Light rain

58° 💧 0.01 in 💨 3 mph H 73%29.74 inHg

8:00 AM

Light rain

62° 💧 0.02 in 💨 2 mph H 66%29.77 inHg

9:00 AM

Light rain

63° 💧 0.04 in 💨 5 mph H 64%29.77 inHg

10:00 AM

Light rain

63° 💧 0.04 in 💨 9 mph H 68%29.80 inHg

11:00 AM

Light rain

66° 💧 0.01 in 💨 7 mph H 62%29.77 inHg

12:00 PM

Light rain

68° 💧 0.01 in 💨 6 mph H 56%29.77 inHg

1:00 PM

Light rain

67° 💧 0.01 in 💨 10 mph H 55%29.77 inHg

2:00 PM

Light rain

68° 💧 0.02 in 💨 17 mph H 49%29.74 inHg

3:00 PM

Moderate rain

63° 💧 0.04 in 💨 7 mph H 55%29.80 inHg

4:00 PM

Light rain

65° 💧 0.01 in 💨 10 mph H 47%29.77 inHg

5:00 PM

Overcast

69° 💧 None 💨 11 mph H 34%29.74 inHg

6:00 PM

Mostly cloudy

72° 💧 None 💨 13 mph H 26%29.68 inHg

7:00 PM

Sunny

70° 💧 None 💨 14 mph H 25%29.71 inHg

8:00 PM

Mostly clear night

61° 💧 None 💨 3 mph H 49%29.77 inHg

9:00 PM

Mostly clear night

57° 💧 None 💨 3 mph H 61%29.80 inHg

10:00 PM

Mostly clear night

58° 💧 None 💨 7 mph H 47%29.80 inHg

11:00 PM

Clear night

56° 💧 None 💨 7 mph H 40%29.83 inHg

Monday

12:00 AM

Clear night

55° 💧 None 💨 7 mph H 41%29.85 inHg

1:00 AM

Clear night

55° 💧 None 💨 8 mph H 42%29.83 inHg

2:00 AM

Clear night

54° 💧 None 💨 9 mph H 45%29.83 inHg

3:00 AM

Clear night

53° 💧 None 💨 7 mph H 45%29.83 inHg

4:00 AM

Clear night

54° 💧 None 💨 9 mph H 41%29.83 inHg

5:00 AM

Clear night

54° 💧 None 💨 9 mph H 36%29.83 inHg

6:00 AM

Clear night

54° 💧 None 💨 9 mph H 34%29.83 inHg

7:00 AM

Sunny

54° 💧 None 💨 8 mph H 35%29.85 inHg

8:00 AM

Sunny

58° 💧 None 💨 8 mph H 32%29.85 inHg

9:00 AM

Sunny

65° 💧 None 💨 16 mph H 24%29.83 inHg

10:00 AM

Sunny

68° 💧 None 💨 21 mph H 22%29.83 inHg

11:00 AM

Sunny

70° 💧 None 💨 21 mph H 20%29.83 inHg

12:00 PM

Sunny

72° 💧 None 💨 20 mph H 19%29.83 inHg

1:00 PM

Sunny

74° 💧 None 💨 18 mph H 19%29.83 inHg

2:00 PM

Sunny

76° 💧 None 💨 16 mph H 18%29.83 inHg

3:00 PM

Sunny

77° 💧 None 💨 15 mph H 19%29.80 inHg

4:00 PM

Sunny

77° 💧 None 💨 13 mph H 19%29.77 inHg

5:00 PM

Sunny

77° 💧 None 💨 13 mph H 20%29.77 inHg

6:00 PM

Sunny

76° 💧 None 💨 12 mph H 22%29.77 inHg

7:00 PM

Sunny

73° 💧 None 💨 11 mph H 27%29.77 inHg

8:00 PM

Clear night

66° 💧 None 💨 7 mph H 36%29.80 inHg

9:00 PM

Clear night

62° 💧 None 💨 4 mph H 42%29.83 inHg

10:00 PM

Clear night

61° 💧 None 💨 4 mph H 44%29.85 inHg

11:00 PM

Clear night

61° 💧 None 💨 4 mph H 45%29.83 inHg

Tuesday

12:00 AM

Clear night

60° 💧 None 💨 4 mph H 45%29.83 inHg

1:00 AM

Clear night

60° 💧 None 💨 5 mph H 46%29.83 inHg

2:00 AM

Clear night

60° 💧 None 💨 6 mph H 47%29.83 inHg

3:00 AM

Clear night

59° 💧 None 💨 7 mph H 47%29.83 inHg

4:00 AM

Clear night

59° 💧 None 💨 7 mph H 47%29.83 inHg

5:00 AM

Mostly clear night

59° 💧 None 💨 7 mph H 47%29.80 inHg

6:00 AM

Mostly clear night

59° 💧 None 💨 7 mph H 46%29.80 inHg

7:00 AM

Mostly sunny

59° 💧 None 💨 7 mph H 43%29.80 inHg

8:00 AM

Mostly sunny

64° 💧 None 💨 6 mph H 37%29.80 inHg

9:00 AM

Mostly sunny

70° 💧 None 💨 8 mph H 26%29.77 inHg

10:00 AM

Mostly sunny

76° 💧 None 💨 6 mph H 20%29.74 inHg

11:00 AM

Mostly sunny

81° 💧 None 💨 4 mph H 16%29.71 inHg

12:00 PM

Sunny

84° 💧 None 💨 2 mph H 13%29.68 inHg

In Grass Range and, more broadly, across the state of Montana: Cloudy skies will persist into the afternoon, with temperatures ranging from the mid-60s to the low 80s. Expect mild to warm conditions, with possible light rain bringing around 0.04 inches of accumulation. The highest chance of rain is about 49%. Winds will be noticeable from the south, reaching speeds of up to 19 mph, with gusts possibly topping 24 mph. Overall, it will be a breezy day with partly cloudy conditions later in the afternoon. Keep an umbrella or rain jacket handy if you plan to be outdoors.

15-Day Weather Outlook for Grass Range

TomorrowTomorrow

Light rain 79°/59° 💧 0.02 in 💨 26 mph

Sunday, Aug 30Sun Aug 30

Moderate rain 75°/57° 💧 0.25 in 💨 19 mph

Monday, Aug 31Mon Aug 31

Sunny 79°/54° 💧 None 💨 17 mph

Tuesday, Sep 1Tue Sep 1

Mostly cloudy 88°/60° 💧 None 💨 12 mph

Wednesday, Sep 2Wed Sep 2

Mostly cloudy 89°/67° 💧 None 💨 14 mph

Thursday, Sep 3Thu Sep 3

Mostly sunny 83°/65° 💧 None 💨 13 mph

Friday, Sep 4Fri Sep 4

Partly cloudy 76°/53° 💧 None 💨 25 mph

Saturday, Sep 5Sat Sep 5

Sunny 68°/45° 💧 None 💨 11 mph

Sunday, Sep 6Sun Sep 6

Sunny 73°/47° 💧 None 💨 11 mph

Monday, Sep 7Mon Sep 7

Light rain 74°/53° 💧 0.02 in 💨 10 mph

Tuesday, Sep 8Tue Sep 8

Light rain 72°/58° 💧 0.19 in 💨 9 mph

Wednesday, Sep 9Wed Sep 9

Mostly sunny 84°/60° 💧 None 💨 11 mph

Thursday, Sep 10Thu Sep 10

Partly cloudy 87°/64° 💧 None 💨 16 mph

Friday, Sep 11Fri Sep 11

Partly cloudy 78°/61° 💧 None 💨 19 mph

Saturday, Sep 12Sat Sep 12

Light rain 71°/55° 💧 0.06 in 💨 17 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Grass Range

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Grass Range

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 PM

PM2.5 Fine particles Good 3,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,7µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 96,7µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,5µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Grass Range

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,0High 🙂Fair

Tomorrow UV 7,0High 🙂Fair

Sunday UV 6,0High 😐Moderate

Monday UV 7,0High 😐Moderate

Tuesday UV 8,0Very high 🙂Fair

Wednesday UV 8,0Very high —Unavailable

Thursday UV 6,0High —Unavailable

Hourly UV index today

1:00 PMUV 6,0 2:00 PMUV 6,0 3:00 PMUV 6,0 4:00 PMUV 6,0 5:00 PMUV 6,0 6:00 PMUV 6,0 7:00 PMUV 6,0

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure. Dry air can increase hydration needs.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Grass Range

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 3.24 Population: 125

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Forecast data for Grass Range were last refreshed today at 12:45 PM. The current forecast period extends through 30/08/2026 at 10:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.