Weather in Corvallis, MT
Corvallis, Tuesday, 20 October, 09:47
Partly cloudy. Feels like 42°. High 62°, low 38°.
Monthly outlook for Corvallis, MT: average high 58°, average low 39.2°. That is 3.5° above the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 30 October (66.3°), the coolest 26 October (30.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 57.6° | 53.7° | +2.2° |
| 30 October – 8 November | 58.7° | 47.4° | +6.3° |
| 9 November – 18 November | at normal | 42.8° | — |
October records over 66 years
0Corvallis, Wednesday, 21 October
Partly cloudy. High 64°, low 36°.
0.3
Corvallis, Thursday, 22 October
Rain. High 62°, low 43°.
0.08Corvallis, Friday, 23 October
Light rain. High 54°, low 44°.
0
Corvallis, Saturday, 24 October
Mostly clear. High 54°, low 37°.
0
Corvallis, Sunday, 25 October
Clear. High 60°, low 37°.
0Corvallis, Monday, 26 October
Clear. High 50°, low 30°.
0Corvallis, Tuesday, 27 October
Mostly clear. High 60°, low 33°.
0Corvallis, Wednesday, 28 October
Clear. High 55°, low 37°.
0Corvallis, Thursday, 29 October
Clear. High 56°, low 36°.
0Corvallis, Friday, 30 October
Partly cloudy. High 66°, low 42°.
0
Corvallis, Saturday, 31 October
Overcast. High 64°, low 45°.
0.01Corvallis, Sunday, 1 November
Light rain. High 61°, low 43°.
0.01Corvallis, Monday, 2 November
Light rain. High 58°, low 44°.
0.11Corvallis, Tuesday, 3 November
Light rain. High 49°, low 42°.
0.04Corvallis, Wednesday, 4 November
Light rain. High 54°, low 41°.
0.08
Corvallis, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Corvallis, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Corvallis, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08Corvallis, Sunday, 8 November
Climate normal for this date — 60-year average.
0.07Corvallis, Monday, 9 November
Climate normal for this date — 60-year average.
0.05Corvallis, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Corvallis, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Corvallis, Thursday, 12 November
Climate normal for this date — 60-year average.
0.08Corvallis, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Corvallis, Saturday, 14 November
Climate normal for this date — 60-year average.
0.03Corvallis, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Corvallis, Monday, 16 November
Climate normal for this date — 60-year average.
0.07Corvallis, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Corvallis, Wednesday, 18 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 Corvallis, 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 Corvallis, 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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