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Current weather in Mammoth is overcast clouds.

Where can I find the hourly weather forecast for Mammoth?

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

Is the weather forecast for Mammoth updated regularly?

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

Now · 11:07 PM

Mammoth Weather & Hourly Forecast

United States · Montana · 59747

51°F

Overcast night

Feels like: 48°F

💧 Humidity 69% 🌡 Pressure 29.94 inHg 💨 Wind 1 mph 👁 Visibility 19.9 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:14 AM 🌇 Sunset 7:27 PM

Hourly Forecast for Mammoth

Tomorrow

12:00 AM

Overcast night

51° 💧 0.001 in 💨 1 mph H 66%29.94 inHg

3:00 AM

Mostly cloudy night

50° 💧 None 💨 2 mph H 65%29.97 inHg

6:00 AM

Mostly clear night

46° 💧 None 💨 4 mph H 76%30.00 inHg

9:00 AM

Sunny

54° 💧 0.001 in 💨 3 mph H 60%30.06 inHg

12:00 PM

Mostly sunny

61° 💧 0.006 in 💨 3 mph H 43%30.06 inHg

3:00 PM

Mostly sunny

64° 💧 0.004 in 💨 3 mph H 35%30.03 inHg

6:00 PM

Mostly sunny

62° 💧 None 💨 1 mph H 34%30.03 inHg

9:00 PM

Mostly clear night

51° 💧 None 💨 2 mph H 55%30.06 inHg

Thursday

12:00 AM

Mostly clear night

50° 💧 None 💨 2 mph H 54%30.06 inHg

3:00 AM

Clear night

49° 💧 None 💨 1 mph H 56%30.09 inHg

6:00 AM

Clear night

48° 💧 None 💨 1 mph H 57%30.09 inHg

9:00 AM

Sunny

56° 💧 None 💨 0 mph H 46%30.12 inHg

12:00 PM

Sunny

64° 💧 0.001 in 💨 4 mph H 42%30.06 inHg

3:00 PM

Sunny

67° 💧 0.003 in 💨 4 mph H 39%30.00 inHg

6:00 PM

Sunny

65° 💧 None 💨 3 mph H 40%29.94 inHg

9:00 PM

Clear night

54° 💧 None 💨 3 mph H 54%29.94 inHg

Tomorrow

12:00 AM

Overcast night

51° 💧 0.001 in 💨 1 mph H 66%29.94 inHg

1:00 AM

Overcast night

51° 💧 0.001 in 💨 1 mph H 64%29.97 inHg

2:00 AM

Mostly cloudy night

50° 💧 None 💨 1 mph H 64%29.97 inHg

3:00 AM

Mostly cloudy night

50° 💧 None 💨 2 mph H 65%29.97 inHg

4:00 AM

Mostly clear night

48° 💧 None 💨 2 mph H 70%29.97 inHg

5:00 AM

Clear night

47° 💧 None 💨 3 mph H 74%29.97 inHg

6:00 AM

Mostly clear night

46° 💧 None 💨 4 mph H 76%30.00 inHg

7:00 AM

Mostly clear night

46° 💧 None 💨 4 mph H 77%30.03 inHg

8:00 AM

Mostly sunny

48° 💧 None 💨 3 mph H 74%30.03 inHg

9:00 AM

Sunny

54° 💧 None 💨 3 mph H 60%30.06 inHg

10:00 AM

Sunny

57° 💧 0.001 in 💨 2 mph H 52%30.06 inHg

11:00 AM

Sunny

60° 💧 None 💨 3 mph H 45%30.06 inHg

12:00 PM

Mostly sunny

61° 💧 0.001 in 💨 3 mph H 43%30.06 inHg

1:00 PM

Mostly sunny

61° 💧 0.002 in 💨 2 mph H 42%30.06 inHg

2:00 PM

Mostly sunny

63° 💧 0.003 in 💨 3 mph H 38%30.03 inHg

3:00 PM

Mostly sunny

64° 💧 0.002 in 💨 3 mph H 35%30.03 inHg

4:00 PM

Mostly sunny

64° 💧 0.002 in 💨 4 mph H 33%30.03 inHg

5:00 PM

Sunny

63° 💧 None 💨 4 mph H 33%30.03 inHg

6:00 PM

Mostly sunny

62° 💧 None 💨 1 mph H 34%30.03 inHg

7:00 PM

Mostly sunny

57° 💧 None 💨 1 mph H 50%30.03 inHg

8:00 PM

Mostly clear night

52° 💧 None 💨 2 mph H 54%30.06 inHg

9:00 PM

Mostly clear night

51° 💧 None 💨 2 mph H 55%30.06 inHg

10:00 PM

Partly cloudy night

50° 💧 None 💨 2 mph H 55%30.06 inHg

11:00 PM

Mostly cloudy night

50° 💧 None 💨 2 mph H 54%30.06 inHg

Thursday

12:00 AM

Mostly clear night

50° 💧 None 💨 2 mph H 54%30.06 inHg

1:00 AM

Clear night

50° 💧 None 💨 2 mph H 53%30.09 inHg

2:00 AM

Clear night

50° 💧 None 💨 1 mph H 55%30.09 inHg

3:00 AM

Clear night

49° 💧 None 💨 1 mph H 56%30.09 inHg

4:00 AM

Clear night

49° 💧 None 💨 1 mph H 57%30.09 inHg

5:00 AM

Clear night

48° 💧 None 💨 1 mph H 57%30.09 inHg

6:00 AM

Clear night

48° 💧 None 💨 1 mph H 57%30.09 inHg

7:00 AM

Clear night

48° 💧 None 💨 1 mph H 57%30.09 inHg

8:00 AM

Sunny

50° 💧 None 💨 1 mph H 56%30.09 inHg

9:00 AM

Sunny

56° 💧 None 💨 0 mph H 46%30.12 inHg

10:00 AM

Sunny

59° 💧 None 💨 3 mph H 43%30.09 inHg

11:00 AM

Sunny

62° 💧 None 💨 3 mph H 42%30.09 inHg

12:00 PM

Sunny

64° 💧 None 💨 4 mph H 42%30.06 inHg

1:00 PM

Sunny

65° 💧 None 💨 4 mph H 41%30.06 inHg

2:00 PM

Sunny

67° 💧 0.001 in 💨 4 mph H 40%30.03 inHg

3:00 PM

Sunny

67° 💧 0.001 in 💨 4 mph H 39%30.00 inHg

4:00 PM

Sunny

67° 💧 0.001 in 💨 4 mph H 38%29.97 inHg

5:00 PM

Sunny

67° 💧 0.001 in 💨 4 mph H 39%29.97 inHg

6:00 PM

Sunny

65° 💧 None 💨 3 mph H 40%29.94 inHg

7:00 PM

Sunny

59° 💧 None 💨 1 mph H 54%29.94 inHg

8:00 PM

Clear night

55° 💧 None 💨 2 mph H 56%29.94 inHg

9:00 PM

Clear night

54° 💧 None 💨 3 mph H 54%29.94 inHg

10:00 PM

Clear night

52° 💧 None 💨 3 mph H 52%29.94 inHg

11:00 PM

Clear night

51° 💧 None 💨 2 mph H 51%29.94 inHg

Friday

12:00 AM

Clear night

51° 💧 None 💨 2 mph H 49%29.91 inHg

1:00 AM

Clear night

51° 💧 None 💨 2 mph H 41%29.91 inHg

2:00 AM

Clear night

50° 💧 None 💨 1 mph H 35%29.91 inHg

3:00 AM

Mostly clear night

49° 💧 None 💨 2 mph H 33%29.88 inHg

4:00 AM

Clear night

48° 💧 None 💨 2 mph H 37%29.88 inHg

5:00 AM

Mostly clear night

47° 💧 None 💨 2 mph H 40%29.88 inHg

6:00 AM

Mostly clear night

47° 💧 None 💨 3 mph H 43%29.88 inHg

3:00 PM

Mostly sunny

75° 💧 None 💨 7 mph H 20%29.65 inHg

6:00 PM

Mostly sunny

72° 💧 None 💨 6 mph H 27%29.59 inHg

9:00 PM

Partly cloudy night

62° 💧 None 💨 6 mph H 39%29.62 inHg

Saturday

12:00 AM

Mostly cloudy night

51° 💧 None 💨 5 mph H 70%29.83 inHg

3:00 AM

Mostly clear night

44° 💧 None 💨 5 mph H 72%29.91 inHg

6:00 AM

Mostly clear night

40° 💧 None 💨 4 mph H 73%30.00 inHg

9:00 AM

Sunny

45° 💧 None 💨 5 mph H 51%30.06 inHg

12:00 PM

Sunny

53° 💧 None 💨 10 mph H 27%30.03 inHg

3:00 PM

Mostly sunny

58° 💧 None 💨 10 mph H 21%29.97 inHg

6:00 PM

Partly cloudy

58° 💧 None 💨 8 mph H 21%29.94 inHg

9:00 PM

Mostly cloudy night

47° 💧 None 💨 3 mph H 43%29.97 inHg

Sunday

12:00 AM

Overcast night

43° 💧 None 💨 3 mph H 53%30.00 inHg

3:00 AM

Overcast night

42° 💧 None 💨 1 mph H 58%30.00 inHg

6:00 AM

Mostly cloudy night

41° 💧 None 💨 1 mph H 59%30.00 inHg

9:00 AM

Mostly cloudy

46° 💧 None 💨 1 mph H 50%29.97 inHg

12:00 PM

Overcast

52° 💧 None 💨 3 mph H 37%29.94 inHg

3:00 PM

Mostly sunny

50° 💧 None 💨 5 mph H 68%29.97 inHg

6:00 PM

Partly cloudy

55° 💧 None 💨 3 mph H 38%29.91 inHg

9:00 PM

Mostly clear night

45° 💧 None 💨 2 mph H 62%29.97 inHg

Monday

12:00 AM

Clear night

42° 💧 None 💨 2 mph H 62%30.00 inHg

3:00 AM

Clear night

39° 💧 None 💨 2 mph H 66%30.03 inHg

6:00 AM

Clear night

39° 💧 None 💨 2 mph H 65%30.03 inHg

9:00 AM

Sunny

45° 💧 None 💨 3 mph H 48%30.03 inHg

12:00 PM

Mostly sunny

55° 💧 None 💨 5 mph H 25%30.00 inHg

6:00 PM

Light rain

51° 💧 None 💨 2 mph H 76%29.94 inHg

Tuesday

12:00 AM

Mostly clear night

56° 💧 None 💨 2 mph H 44%29.85 inHg

6:00 AM

Clear night

44° 💧 None 💨 2 mph H 73%29.88 inHg

12:00 PM

Sunny

42° 💧 None 💨 1 mph H 66%29.88 inHg

6:00 PM

Mostly sunny

60° 💧 None 💨 4 mph H 35%29.85 inHg

Wednesday

12:00 AM

Mostly clear night

65° 💧 None 💨 2 mph H 26%29.71 inHg

6:00 AM

Mostly clear night

47° 💧 None 💨 2 mph H 48%29.74 inHg

12:00 PM

Mostly cloudy

45° 💧 None 💨 0 mph H 50%29.68 inHg

6:00 PM

Overcast

61° 💧 None 💨 5 mph H 33%29.62 inHg

Thursday

12:00 AM

Moderate rain

47° 💧 None 💨 6 mph H 87%29.74 inHg

6:00 AM

Light rain

39° 💧 None 💨 5 mph H 94%29.94 inHg

12:00 PM

Mostly sunny

35° 💧 None 💨 9 mph H 69%30.09 inHg

6:00 PM

Partly cloudy

45° 💧 None 💨 11 mph H 43%30.15 inHg

Friday

12:00 AM

Mostly clear night

48° 💧 None 💨 8 mph H 37%30.15 inHg

6:00 AM

Clear night

35° 💧 None 💨 3 mph H 62%30.27 inHg

12:00 PM

Sunny

34° 💧 None 💨 1 mph H 55%30.30 inHg

6:00 PM

Sunny

49° 💧 None 💨 3 mph H 36%30.24 inHg

Saturday

12:00 AM

Mostly cloudy night

52° 💧 None 💨 3 mph H 37%30.12 inHg

6:00 AM

Clear night

38° 💧 None 💨 2 mph H 48%30.12 inHg

12:00 PM

Sunny

38° 💧 None 💨 1 mph H 42%30.06 inHg

6:00 PM

Mostly cloudy

59° 💧 None 💨 3 mph H 26%30.00 inHg

Sunday

12:00 AM

Overcast night

60° 💧 None 💨 4 mph H 26%29.85 inHg

6:00 AM

Mostly cloudy night

53° 💧 None 💨 5 mph H 34%29.85 inHg

12:00 PM

Mostly sunny

45° 💧 None 💨 3 mph H 47%29.85 inHg

6:00 PM

Partly cloudy

60° 💧 None 💨 3 mph H 30%29.83 inHg

Monday

12:00 AM

Overcast night

58° 💧 None 💨 5 mph H 36%29.74 inHg

6:00 AM

Clear night

45° 💧 None 💨 2 mph H 57%29.80 inHg

12:00 PM

Mostly sunny

38° 💧 None 💨 1 mph H 63%29.85 inHg

6:00 PM

Mostly sunny

46° 💧 None 💨 7 mph H 55%29.91 inHg

Tuesday

12:00 AM

Light rain

41° 💧 None 💨 7 mph H 86%29.94 inHg

6:00 AM

Snow

33° 💧 None 💨 3 mph H 97%30.06 inHg

12:00 PM

Snow

32° 💧 None 💨 3 mph H 97%30.06 inHg

6:00 PM

Snow

33° 💧 None 💨 2 mph H 92%30.09 inHg

Wednesday

12:00 AM

Snow

32° 💧 None 💨 2 mph H 94%30.15 inHg

6:00 AM

Light snow

30° 💧 None 💨 4 mph H 95%30.21 inHg

12:00 PM

Light snow

30° 💧 None 💨 4 mph H 90%30.24 inHg

In Mammoth and, more broadly, across the state of Montana: Clear skies are expected tonight with temperatures holding steady around 62 degrees. Light southeast winds will prevail, generally blowing at 3 to 5 mph, with occasional gusts reaching up to 10 mph. No precipitation is forecasted for the evening and the upcoming hours. It will remain a cool and tranquil night, making it a good time to enjoy the clear sky and gentle breeze. Temperatures are unlikely to fluctuate significantly through the evening, providing a calm and comfortable environment.

15-Day Weather Outlook for Mammoth

TomorrowTomorrow

Overcast 64°/46° 💧 None 💨 4 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 67°/48° 💧 None 💨 4 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 75°/47° 💧 0.026 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Mostly cloudy 58°/40° 💧 0.010 in 💨 10 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 55°/41° 💧 0.058 in 💨 5 mph

Monday, Sep 28Mon Sep 28

Mostly sunny 55°/39° 💧 None 💨 5 mph

Tuesday, Sep 29Tue Sep 29

Mostly sunny 60°/42° 💧 0.016 in 💨 4 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 65°/45° 💧 None 💨 5 mph

Thursday, Oct 1Thu Oct 1

Moderate rain 47°/35° 💧 0.386 in 💨 11 mph

Friday, Oct 2Fri Oct 2

Mostly sunny 49°/34° 💧 0.003 in 💨 8 mph

Saturday, Oct 3Sat Oct 3

Mostly cloudy 59°/38° 💧 None 💨 3 mph

Sunday, Oct 4Sun Oct 4

Overcast 60°/45° 💧 None 💨 5 mph

Monday, Oct 5Mon Oct 5

Overcast 58°/38° 💧 None 💨 7 mph

Tuesday, Oct 6Tue Oct 6

Snow 41°/32° 💧 2.648 in 💨 7 mph

Wednesday, Oct 7Wed Oct 7

Snow 32°/30° 💧 1.326 in 💨 4 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mammoth

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mammoth

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 12:00 AM

PM2.5 Fine particles Good 0,9µg/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 1,0µg/m³

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

O₃ Ozone Good 49,3µg/m³

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

NO₂ Nitrogen dioxide Good 3,2µg/m³

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

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Mammoth

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 4,4Moderate —Unavailable

Tomorrow UV 5,4Moderate 🙂Fair

Thursday UV 5,3Moderate 🙂Fair

Friday UV 5,0Moderate 🙂Fair

Saturday UV 4,8Moderate 🙂Fair

Sunday UV 4,0Moderate —Unavailable

Monday UV 2,0Low —Unavailable

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

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 Mammoth

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MAMMOTH, MONTANA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

93/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:05 PM–5:36 AM

☁ Cloud cover 10% Real hourly forecast for the best viewing hour.

☾ Moonlight 89% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 59° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min69%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Mammoth were last refreshed today at 11:07 PM. The current forecast period extends through 24/09/2026 at 9:00 PM. 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.