Weather in Saint Johns, MT
Saint Johns, Sunday, 18 October, 14:27
Clear. Feels like 57°. High 60°, low 39°.
Monthly outlook for Saint Johns, MT: average high 46.8°, average low 34.2°. That is 2.7° below the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 19 October (64.1°), the coolest 30 October (24.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 52.4° | 54.1° | -1° |
| 28 October – 6 November | 37.5° | 47.1° | -5.3° |
| 7 November – 16 November | at normal | 41.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Simpson (13 mi).
0
Saint Johns, Monday, 19 October
Partly cloudy. High 64°, low 40°.
0
Saint Johns, Tuesday, 20 October
Overcast. High 58°, low 38°.
0Saint Johns, Wednesday, 21 October
Partly cloudy. High 62°, low 38°.
0Saint Johns, Thursday, 22 October
Overcast. High 62°, low 41°.
0.02
Saint Johns, Friday, 23 October
Light rain. High 51°, low 42°.
0Saint Johns, Saturday, 24 October
Overcast. High 42°, low 35°.
0.01
Saint Johns, Sunday, 25 October
Light snow. High 41°, low 35°.
0.19Saint Johns, Monday, 26 October
Snow. High 40°, low 34°.
0Saint Johns, Tuesday, 27 October
Overcast. High 44°, low 34°.
0.43Saint Johns, Wednesday, 28 October
Rain. High 44°, low 37°.
0.09Saint Johns, Thursday, 29 October
Light snow. High 34°, low 27°.
0
Saint Johns, Friday, 30 October
Mostly clear. High 35°, low 25°.
0Saint Johns, Saturday, 31 October
Overcast. High 41°, low 25°.
0Saint Johns, Sunday, 1 November
Overcast. High 35°, low 28°.
0.12Saint Johns, Monday, 2 November
Snow. High 36°, low 30°.
0.02Saint Johns, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Saint Johns, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Saint Johns, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Saint Johns, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Saint Johns, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Saint Johns, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Saint Johns, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Saint Johns, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02Saint Johns, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Saint Johns, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Saint Johns, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Saint Johns, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Saint Johns, Sunday, 15 November
Climate normal for this date — 60-year average.
0.03Saint Johns, Monday, 16 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 Saint Johns, 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 Saint Johns, 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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