Weather in Mammoth, MT
Mammoth, Thursday, 8 October, 10:13
Clear. Feels like 43°. High 67°, low 31°.
Monthly outlook for Mammoth, MT: average high 42.8°, average low 25.5°. That is 8.3° below the climate normal for October. Precipitation is expected on 6 days (about 3.1 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 9 October (70.8°), the coolest 16 October (10.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 42.7° | 58.2° | -8.6° |
| 18 October – 27 October | 43° | 55.4° | -6.9° |
| 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).
0
Mammoth, Friday, 9 October
Mostly clear. High 71°, low 33°.
0.19
Mammoth, Saturday, 10 October
Snow. High 54°, low 34°.
0.66Mammoth, Sunday, 11 October
Snow. High 33°, low 30°.
0.61Mammoth, Monday, 12 October
Snow. High 34°, low 27°.
0Mammoth, Tuesday, 13 October
Mostly clear. High 40°, low 27°.
0.49Mammoth, Wednesday, 14 October
Snow. High 41°, low 26°.
0.71Mammoth, Thursday, 15 October
Snow. High 25°, low 13°.
0Mammoth, Friday, 16 October
Clear. High 28°, low 11°.
0Mammoth, Saturday, 17 October
Clear. High 33°, low 15°.
0Mammoth, Sunday, 18 October
Clear. High 38°, low 24°.
0Mammoth, Monday, 19 October
Clear. High 44°, low 30°.
0
Mammoth, Tuesday, 20 October
Partly cloudy. High 47°, low 33°.
0Mammoth, Wednesday, 21 October
Partly cloudy. High 44°, low 31°.
0
Mammoth, Thursday, 22 October
Overcast. High 47°, low 28°.
0.41Mammoth, Friday, 23 October
Snow. High 38°, low 16°.
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.
0.04Mammoth, 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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