Weather in St. Ignatius, MT
St. Ignatius, Thursday, 22 October, 03:07
Clear. Feels like 41°. High 67°, low 39°.
Monthly outlook for St. Ignatius, MT: average high 53.5°, average low 39.3°. That is 2.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 7 days and 1.5 inches. The warmest day looks like 22 October (66.7°), the coolest 30 October (33.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 49.9° | 51° | -0.6° |
| 1 November – 10 November | 59.4° | 45.4° | +7.8° |
| 11 November – 20 November | at normal | 41.3° | — |
October records over 66 years
0.34
St. Ignatius, Friday, 23 October
Rain. High 48°, low 40°.
0
St. Ignatius, Saturday, 24 October
Partly cloudy. High 53°, low 37°.
0
St. Ignatius, Sunday, 25 October
Clear. High 50°, low 38°.
0
St. Ignatius, Monday, 26 October
Overcast. High 47°, low 36°.
0.48
St. Ignatius, Tuesday, 27 October
Snow. High 41°, low 35°.
0.18St. Ignatius, Wednesday, 28 October
Snow. High 43°, low 38°.
0.03St. Ignatius, Thursday, 29 October
Light snow. High 45°, low 38°.
0St. Ignatius, Friday, 30 October
Clear. High 52°, low 33°.
0St. Ignatius, Saturday, 31 October
Overcast. High 53°, low 37°.
0St. Ignatius, Sunday, 1 November
Partly cloudy. High 55°, low 38°.
0St. Ignatius, Monday, 2 November
Clear. High 56°, low 38°.
0St. Ignatius, Tuesday, 3 November
Overcast. High 62°, low 44°.
0.09St. Ignatius, Wednesday, 4 November
Light rain. High 59°, low 47°.
0St. Ignatius, Thursday, 5 November
Overcast. High 63°, low 46°.
0St. Ignatius, Friday, 6 November
Overcast. High 61°, low 47°.
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.
0.09St. Ignatius, Friday, 20 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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