Weather in Portage, MT
Portage, Sunday, 18 October, 13:36
Mostly clear. Feels like 55°. High 59°, low 39°.
Monthly outlook for Portage, MT: average high 48.4°, average low 33.3°. That is 3.3° below the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 19 October (68.5°), the coolest 30 October (17.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 53.4° | 56.5° | -1.7° |
| 28 October – 6 November | 40° | 50° | -5.6° |
| 7 November – 16 November | at normal | 45.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Carter (12 mi).
0
Portage, Monday, 19 October
Partly cloudy. High 68°, low 36°.
0
Portage, Tuesday, 20 October
Overcast. High 56°, low 40°.
0Portage, Wednesday, 21 October
Partly cloudy. High 61°, low 37°.
0.01
Portage, Thursday, 22 October
Light rain. High 65°, low 46°.
0.26Portage, Friday, 23 October
Rain. High 50°, low 44°.
0Portage, Saturday, 24 October
Overcast. High 43°, low 33°.
0Portage, Sunday, 25 October
Overcast. High 44°, low 36°.
0Portage, Monday, 26 October
Overcast. High 45°, low 36°.
0.02
Portage, Tuesday, 27 October
Light snow. High 43°, low 34°.
0.02Portage, Wednesday, 28 October
Light snow. High 51°, low 35°.
0.22Portage, Thursday, 29 October
Snow. High 36°, low 24°.
0Portage, Friday, 30 October
Mostly clear. High 33°, low 17°.
0Portage, Saturday, 31 October
Partly cloudy. High 38°, low 20°.
0Portage, Sunday, 1 November
Overcast. High 35°, low 23°.
0.01Portage, Monday, 2 November
Light snow. High 47°, low 30°.
0.02Portage, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Portage, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Portage, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Portage, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Portage, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Portage, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Portage, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Portage, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Portage, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Portage, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Portage, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Portage, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Portage, Sunday, 15 November
Climate normal for this date — 60-year average.
0.03Portage, 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 Portage, 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 Portage, 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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