EN
English Español

As of 11:56 MDT

Weather in Mammoth, MT

71°Current weather

Mammoth, Saturday, 8 August, 11:56

Clear. Feels like 68°. High 80°, low 46°.

Pressure29.91 inHg
Wind9 mph W
Humidity19%
Visibility6.2 mi
Dew point27°
Sun, 0976° / 47°0Partly cloudy
76 °Partly cloudy

Mammoth, Sunday, 9 August

Partly cloudy. High 76°, low 47°.

Pressure29.88 inHg
Wind4.7 mph N
Humidity13%
Visibility6.2 mi
Dew point24°
Mon, 1084° / 52°0Clear
84 °Clear

Mammoth, Monday, 10 August

Clear. High 84°, low 52°.

Pressure29.83 inHg
Wind6.7 mph W
Humidity11%
Visibility6.2 mi
Dew point21°
Tue, 1180° / 52°0Clear
80 °Clear

Mammoth, Tuesday, 11 August

Clear. High 80°, low 52°.

Pressure29.97 inHg
Wind5 mph N
Humidity14%
Visibility6.2 mi
Dew point23°
Wed, 1278° / 48°0Mostly clear
78 °Mostly clear

Mammoth, Wednesday, 12 August

Mostly clear. High 78°, low 48°.

Pressure29.94 inHg
Wind10.4 mph NE
Humidity24%
Visibility—
Dew point29°
Thu, 1380° / 44°0Clear
80 °Clear

Mammoth, Thursday, 13 August

Clear. High 80°, low 44°.

Pressure29.91 inHg
Wind5.7 mph E
Humidity31%
Visibility—
Dew point33°
Fri, 1472° / 50°0Overcast
72 °Overcast

Mammoth, Friday, 14 August

Overcast. High 72°, low 50°.

Pressure29.85 inHg
Wind14 mph SW
Humidity25%
Visibility—
Dew point32°
Sat, 1563° / 50°0.34Rain
63 °Rain

Mammoth, Saturday, 15 August

Rain. High 63°, low 50°.

Pressure30.00 inHg
Wind6 mph W
Humidity49%
Visibility—
Dew point43°
Sun, 1675° / 47°0.01Light rain
75 °Light rain

Mammoth, Sunday, 16 August

Light rain. High 75°, low 47°.

Pressure30.09 inHg
Wind10.4 mph SW
Humidity27%
Visibility—
Dew point30°
Mon, 1778° / 55°0Overcast
78 °Overcast

Mammoth, Monday, 17 August

Overcast. High 78°, low 55°.

Pressure30.03 inHg
Wind17.4 mph NW
Humidity23%
Visibility—
Dew point31°
Tue, 1865° / 56°0Light rain
65 °Light rain

Mammoth, Tuesday, 18 August

Light rain. High 65°, low 56°.

Pressure30.06 inHg
Wind8.1 mph NE
Humidity42%
Visibility—
Dew point39°
Wed, 1976° / 48°0Mostly clear
76 °Mostly clear

Mammoth, Wednesday, 19 August

Mostly clear. High 76°, low 48°.

Pressure30.03 inHg
Wind5.6 mph SE
Humidity40%
Visibility—
Dew point40°
Thu, 2084° / 54°0Mostly clear
84 °Mostly clear

Mammoth, Thursday, 20 August

Mostly clear. High 84°, low 54°.

Pressure29.88 inHg
Wind13.6 mph W
Humidity24%
Visibility—
Dew point36°
Fri, 2170° / 54°0.52Heavy rain
70 °Heavy rain

Mammoth, Friday, 21 August

Heavy rain. High 70°, low 54°.

Pressure29.97 inHg
Wind9.6 mph NW
Humidity42%
Visibility—
Dew point45°
Sat, 2276° / 51°0.04Light rain
76 °Light rain

Mammoth, Saturday, 22 August

Light rain. High 76°, low 51°.

Pressure29.94 inHg
Wind13.8 mph W
Humidity35%
Visibility—
Dew point41°
Sun, 2373° / 50°0.01Light rain
73 °Light rain

Mammoth, Sunday, 23 August

Light rain. High 73°, low 50°.

Pressure29.94 inHg
Wind10.7 mph W
Humidity29%
Visibility—
Dew point32°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Mammoth, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Mammoth, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.