Weather in Saint Johns, MT
Saint Johns, Saturday, 17 October, 09:58
Overcast. Feels like 53°. High 75°, low 48°.
Monthly outlook for Saint Johns, MT: average high 53.2°, average low 37.9°. That is 0.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.1 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 17 October (75.5°), the coolest 31 October (26.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 57.5° | 54.6° | +1.6° |
| 27 October – 5 November | 45.9° | 47.7° | -1° |
| 6 November – 15 November | at normal | 42° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Simpson (13 mi).
0
Saint Johns, Sunday, 18 October
Clear. High 59°, low 37°.
0Saint Johns, Monday, 19 October
Overcast. High 61°, low 37°.
0Saint Johns, Tuesday, 20 October
Overcast. High 57°, low 39°.
0Saint Johns, Wednesday, 21 October
Clear. High 62°, low 38°.
0
Saint Johns, Thursday, 22 October
Partly cloudy. High 64°, low 40°.
0.02
Saint Johns, Friday, 23 October
Light rain. High 51°, low 46°.
0Saint Johns, Saturday, 24 October
Partly cloudy. High 49°, low 37°.
0Saint Johns, Sunday, 25 October
Overcast. High 51°, low 39°.
0.07Saint Johns, Monday, 26 October
Light rain. High 46°, low 41°.
0.05Saint Johns, Tuesday, 27 October
Light rain. High 51°, low 44°.
0
Saint Johns, Wednesday, 28 October
Mostly clear. High 51°, low 40°.
0Saint Johns, Thursday, 29 October
Overcast. High 46°, low 34°.
0Saint Johns, Friday, 30 October
Overcast. High 37°, low 30°.
0Saint Johns, Saturday, 31 October
Clear. High 45°, low 27°.
0Saint Johns, Sunday, 1 November
Clear. High 46°, low 31°.
0.02Saint Johns, Monday, 2 November
Climate normal for this date — 60-year average.
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.
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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