Weather in Canyon Ferry, MT
Canyon Ferry, Sunday, 9 August, 04:00
Mostly clear. Feels like 57°. High 88°, low 58°.
Monthly outlook for Canyon Ferry, MT: average high 82.8°, average low 55.5°. That is 1.5° above the climate normal for August. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 11 August (92.6°), the coolest 24 August (49°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 85.2° | 80.9° | +2.4° |
| 19 August – 28 August | 78.8° | 78.9° | -0° |
| 29 August – 7 September | at normal | 76.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Helena (15 mi).
0
Canyon Ferry, Monday, 10 August
Clear. High 89°, low 55°.
0Canyon Ferry, Tuesday, 11 August
Clear. High 93°, low 57°.
0
Canyon Ferry, Wednesday, 12 August
Overcast. High 87°, low 58°.
0Canyon Ferry, Thursday, 13 August
Overcast. High 86°, low 60°.
0.04
Canyon Ferry, Friday, 14 August
Light rain. High 75°, low 58°.
0.07Canyon Ferry, Saturday, 15 August
Light rain. High 86°, low 51°.
0Canyon Ferry, Sunday, 16 August
Overcast. High 76°, low 58°.
0.01Canyon Ferry, Monday, 17 August
Light rain. High 88°, low 56°.
0Canyon Ferry, Tuesday, 18 August
Overcast. High 83°, low 55°.
0Canyon Ferry, Wednesday, 19 August
Overcast. High 82°, low 56°.
0Canyon Ferry, Thursday, 20 August
Clear. High 86°, low 54°.
0.35Canyon Ferry, Friday, 21 August
Rain. High 83°, low 58°.
0.53Canyon Ferry, Saturday, 22 August
Rain. High 65°, low 55°.
0Canyon Ferry, Sunday, 23 August
Clear. High 75°, low 50°.
0Canyon Ferry, Monday, 24 August
Overcast. High 82°, low 49°.
0.03
Canyon Ferry, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.03
Canyon Ferry, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.04Canyon Ferry, Thursday, 27 August
Climate normal for this date — 60-year average.
0.07Canyon Ferry, Friday, 28 August
Climate normal for this date — 60-year average.
0.04Canyon Ferry, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Canyon Ferry, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Canyon Ferry, Monday, 31 August
Climate normal for this date — 60-year average.
0.06Canyon Ferry, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Canyon Ferry, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.02Canyon Ferry, Thursday, 3 September
Climate normal for this date — 60-year average.
0.05Canyon Ferry, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Canyon Ferry, Saturday, 5 September
Climate normal for this date — 60-year average.
0.05Canyon Ferry, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Canyon Ferry, Monday, 7 September
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 Canyon Ferry, 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 Canyon Ferry, 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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