Weather in Mammoth, MT
Mammoth, Thursday, 8 October, 17:09
Partly cloudy. Feels like 62°. High 65°, low 29°.
Monthly outlook for Mammoth, MT: average high 45.3°, average low 28.2°. That is 6.9° below the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 9 October (70.2°), the coolest 16 October (10°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 44.4° | 58.2° | -7.7° |
| 18 October – 27 October | 46.9° | 55.4° | -4.7° |
| 28 October – 6 November | at normal | 48° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Cardwell (14 mi).
0Mammoth, Friday, 9 October
Partly cloudy. High 70°, low 32°.
0.29
Mammoth, Saturday, 10 October
Snow. High 54°, low 32°.
0.53Mammoth, Sunday, 11 October
Snow. High 34°, low 31°.
0.09Mammoth, Monday, 12 October
Snow. High 38°, low 31°.
0
Mammoth, Tuesday, 13 October
Overcast. High 49°, low 31°.
0.17Mammoth, Wednesday, 14 October
Snow. High 40°, low 27°.
0.24Mammoth, Thursday, 15 October
Snow. High 27°, low 16°.
0
Mammoth, Friday, 16 October
Clear. High 28°, low 10°.
0Mammoth, Saturday, 17 October
Clear. High 39°, low 18°.
0Mammoth, Sunday, 18 October
Overcast. High 42°, low 30°.
0.03
Mammoth, Monday, 19 October
Light rain. High 39°, low 32°.
0Mammoth, Tuesday, 20 October
Clear. High 47°, low 29°.
0Mammoth, Wednesday, 21 October
Overcast. High 50°, low 33°.
0Mammoth, Thursday, 22 October
Clear. High 52°, low 35°.
0Mammoth, Friday, 23 October
Partly cloudy. High 51°, low 36°.
0.04Mammoth, Saturday, 24 October
Climate normal for this date — 60-year average.
0.04Mammoth, Sunday, 25 October
Climate normal for this date — 60-year average.
0.07
Mammoth, Monday, 26 October
Climate normal for this date — 60-year average.
0.03Mammoth, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Mammoth, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Mammoth, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Mammoth, Friday, 30 October
Climate normal for this date — 60-year average.
0.05Mammoth, Saturday, 31 October
Climate normal for this date — 60-year average.
0.04Mammoth, Sunday, 1 November
Climate normal for this date — 60-year average.
0.03Mammoth, Monday, 2 November
Climate normal for this date — 60-year average.
0.04
Mammoth, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Mammoth, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Mammoth, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Mammoth, Friday, 6 November
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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