Weather in St. Ignatius, MT
St. Ignatius, Wednesday, 21 October, 05:51
Clear. Feels like 37°. High 65°, low 37°.
Monthly outlook for St. Ignatius, MT: average high 45.1°, average low 32°. That is 2.7° below the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 7 days and 1.5 inches. The warmest day looks like 22 October (66.5°), the coolest 28 October (17.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 47.2° | 51.8° | -2.6° |
| 31 October – 9 November | 41.4° | 45.9° | -2.5° |
| 10 November – 19 November | at normal | 41.7° | — |
October records over 66 years
0.01
St. Ignatius, Thursday, 22 October
Light rain. High 66°, low 38°.
0.39St. Ignatius, Friday, 23 October
Rain. High 50°, low 45°.
0
St. Ignatius, Saturday, 24 October
Partly cloudy. High 53°, low 38°.
0St. Ignatius, Sunday, 25 October
Partly cloudy. High 50°, low 38°.
0.07
St. Ignatius, Monday, 26 October
Snow. High 47°, low 33°.
0.03St. Ignatius, Tuesday, 27 October
Light snow. High 33°, low 23°.
0
St. Ignatius, Wednesday, 28 October
Overcast. High 33°, low 18°.
0St. Ignatius, Thursday, 29 October
Overcast. High 36°, low 25°.
0St. Ignatius, Friday, 30 October
Partly cloudy. High 39°, low 29°.
0St. Ignatius, Saturday, 31 October
Overcast. High 39°, low 34°.
0.01St. Ignatius, Sunday, 1 November
Light rain. High 48°, low 37°.
0.35St. Ignatius, Monday, 2 November
Rain. High 48°, low 40°.
0.77St. Ignatius, Tuesday, 3 November
Snow. High 42°, low 27°.
0St. Ignatius, Wednesday, 4 November
Overcast. High 35°, low 26°.
0
St. Ignatius, Thursday, 5 November
Mostly clear. High 35°, low 22°.
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.
0.09St. Ignatius, Thursday, 19 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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