Weather in Corvallis, MT
Corvallis, Monday, 19 October, 01:39
Partly cloudy. Feels like 44°. High 67°, low 39°.
Monthly outlook for Corvallis, MT: average high 52°, average low 36.7°. That is 0.1° below the climate normal for October. Precipitation is expected on 9 days (about 1.8 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 19 October (67.1°), the coolest 31 October (26.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 57.4° | 54.5° | +1.6° |
| 29 October – 7 November | 43.1° | 47.9° | -2.6° |
| 8 November – 17 November | at normal | 43.3° | — |
October records over 66 years
0
Corvallis, Tuesday, 20 October
Partly cloudy. High 62°, low 41°.
0.01
Corvallis, Wednesday, 21 October
Light rain. High 65°, low 42°.
0.04Corvallis, Thursday, 22 October
Light rain. High 63°, low 45°.
0.69Corvallis, Friday, 23 October
Rain. High 47°, low 42°.
0
Corvallis, Saturday, 24 October
Clear. High 54°, low 34°.
0.04Corvallis, Sunday, 25 October
Light rain. High 49°, low 38°.
0Corvallis, Monday, 26 October
Partly cloudy. High 57°, low 34°.
0
Corvallis, Tuesday, 27 October
Overcast. High 59°, low 40°.
0.12
Corvallis, Wednesday, 28 October
Snow. High 52°, low 40°.
0.16Corvallis, Thursday, 29 October
Light snow. High 40°, low 35°.
0.04Corvallis, Friday, 30 October
Light snow. High 42°, low 29°.
0.02Corvallis, Saturday, 31 October
Light snow. High 47°, low 27°.
0.07Corvallis, Sunday, 1 November
Light snow. High 50°, low 38°.
0.39Corvallis, Monday, 2 November
Snow. High 44°, low 32°.
0.17Corvallis, Tuesday, 3 November
Snow. High 37°, low 31°.
0.07
Corvallis, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.08Corvallis, 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.
0.03
Corvallis, 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.
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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