Weather in St. Ignatius, MT
St. Ignatius, Tuesday, 20 October, 23:08
Partly cloudy. Feels like 43°. High 63°, low 37°.
Monthly outlook for St. Ignatius, MT: average high 56.9°, average low 39.2°. That is 3.5° above the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 7 days and 1.4 inches. The warmest day looks like 4 November (67.1°), the coolest 26 October (31.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 54.7° | 52.8° | +1.1° |
| 30 October – 8 November | 60.5° | 46.3° | +7.9° |
| 9 November – 18 November | at normal | 42.2° | — |
October records over 66 years
0
St. Ignatius, Wednesday, 21 October
Partly cloudy. High 64°, low 36°.
0.01
St. Ignatius, Thursday, 22 October
Light rain. High 60°, low 37°.
0.52St. Ignatius, Friday, 23 October
Rain. High 49°, low 42°.
0St. Ignatius, Saturday, 24 October
Partly cloudy. High 51°, low 33°.
0
St. Ignatius, Sunday, 25 October
Clear. High 50°, low 37°.
0St. Ignatius, Monday, 26 October
Clear. High 47°, low 31°.
0
St. Ignatius, Tuesday, 27 October
Overcast. High 54°, low 36°.
0St. Ignatius, Wednesday, 28 October
Clear. High 53°, low 37°.
0St. Ignatius, Thursday, 29 October
Clear. High 57°, low 37°.
0St. Ignatius, Friday, 30 October
Overcast. High 58°, low 40°.
0St. Ignatius, Saturday, 31 October
Overcast. High 54°, low 38°.
0
St. Ignatius, Sunday, 1 November
Mostly clear. High 56°, low 37°.
0St. Ignatius, Monday, 2 November
Overcast. High 62°, low 42°.
0St. Ignatius, Tuesday, 3 November
Overcast. High 66°, low 54°.
0St. Ignatius, Wednesday, 4 November
Partly cloudy. High 67°, low 51°.
0.11St. Ignatius, Thursday, 5 November
Climate normal for this date — 60-year average.
0.13St. Ignatius, Friday, 6 November
Climate normal for this date — 60-year average.
0.13
St. Ignatius, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09St. Ignatius, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1St. Ignatius, Monday, 9 November
Climate normal for this date — 60-year average.
0.07St. Ignatius, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09St. Ignatius, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.11St. Ignatius, Thursday, 12 November
Climate normal for this date — 60-year average.
0.1St. Ignatius, Friday, 13 November
Climate normal for this date — 60-year average.
0.09St. Ignatius, Saturday, 14 November
Climate normal for this date — 60-year average.
0.04St. Ignatius, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1St. Ignatius, Monday, 16 November
Climate normal for this date — 60-year average.
0.09St. Ignatius, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11St. Ignatius, Wednesday, 18 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 St. Ignatius, 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 St. Ignatius, 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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