Monthly outlook for Corvallis, MT: average high 54.3°, average low 36.5°. That is 5.3° above the climate normal for November. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 6 days and 1.1 inches. The warmest day looks like 9 November (65.5°), the coolest 5 November (29°).
54.3°/36.5°
Average high / low
+5.3°
Above normal
1 / 6
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
2 November – 11 November
54.8°
45.9°
+4.9°
12 November – 21 November
53.5°
41.5°
+6.7°
22 November – 1 December
at normal
35.9°
—
November records over 66 years
69.4°1 November 2025All-time high
-17°23 November 1985All-time low
Tue, 0351° / 33°0
51 °
Corvallis, Tuesday, 3 November
Overcast. High 51°, low 33°.
Pressure30.12 inHg
Wind1.8 mph NE
Humidity55%
Visibility6.2 mi
Dew point27°
Wed, 0450° / 35°0
50 °
Corvallis, Wednesday, 4 November
Clear. High 50°, low 35°.
Pressure30.06 inHg
Wind1.1 mph E
Humidity54%
Visibility6.2 mi
Dew point30°
Thu, 0546° / 29°0
46 °
Corvallis, Thursday, 5 November
Light rain. High 46°, low 29°.
Pressure30.09 inHg
Wind1.3 mph S
Humidity62%
Visibility6.2 mi
Dew point34°
Fri, 0651° / 30°0.02
51 °
Corvallis, Friday, 6 November
Light rain. High 51°, low 30°.
Pressure30.12 inHg
Wind7 mph S
Humidity51%
Visibility—
Dew point28°
Sat, 0752° / 34°0
52 °
Corvallis, Saturday, 7 November
Clear. High 52°, low 34°.
Pressure30.36 inHg
Wind3.4 mph SW
Humidity56%
Visibility—
Dew point30°
Sun, 0865° / 41°0
65 °
Corvallis, Sunday, 8 November
Overcast. High 65°, low 41°.
Pressure29.97 inHg
Wind6.8 mph S
Humidity41%
Visibility—
Dew point35°
Mon, 0966° / 42°0
66 °
Corvallis, Monday, 9 November
Mostly clear. High 66°, low 42°.
Pressure29.94 inHg
Wind6 mph S
Humidity42%
Visibility—
Dew point33°
Tue, 1060° / 43°0
60 °
Corvallis, Tuesday, 10 November
Overcast. High 60°, low 43°.
Pressure30.00 inHg
Wind3 mph S
Humidity45%
Visibility—
Dew point33°
Wed, 1162° / 45°0
62 °
Corvallis, Wednesday, 11 November
Overcast. High 62°, low 45°.
Pressure30.06 inHg
Wind3 mph S
Humidity46%
Visibility—
Dew point33°
Thu, 1262° / 44°0.04
62 °
Corvallis, Thursday, 12 November
Light rain. High 62°, low 44°.
Pressure29.94 inHg
Wind5 mph S
Humidity41%
Visibility—
Dew point31°
Fri, 1349° / 40°0.28
49 °
Corvallis, Friday, 13 November
Snow. High 49°, low 40°.
Pressure30.06 inHg
Wind10.8 mph W
Humidity58%
Visibility—
Dew point32°
Sat, 1451° / 33°0
51 °
Corvallis, Saturday, 14 November
Clear. High 51°, low 33°.
Pressure30.42 inHg
Wind5.6 mph S
Humidity60%
Visibility—
Dew point31°
Sun, 1558° / 35°0
58 °
Corvallis, Sunday, 15 November
Overcast. High 58°, low 35°.
Pressure30.09 inHg
Wind4.7 mph S
Humidity42%
Visibility—
Dew point26°
Mon, 1649° / 33°0
49 °
Corvallis, Monday, 16 November
Partly cloudy. High 49°, low 33°.
Pressure29.97 inHg
Wind5.2 mph NW
Humidity60%
Visibility—
Dew point34°
Tue, 1751° / 29°0
51 °
Corvallis, Tuesday, 17 November
Mostly clear. High 51°, low 29°.
Pressure30.24 inHg
Wind4.5 mph S
Humidity43%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1840° / 24°0.08
40 °
Corvallis, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.08 in
Chance of precipitation47%
Record high59° (2008)
Record low-6° (2022)
Thu, 1940° / 22°0.08
40 °
Corvallis, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.08 in
Chance of precipitation37%
Record high51° (1987)
Record low-5° (1975)
Fri, 2040° / 23°0.07
40 °
Corvallis, Friday, 20 November
Climate normal for this date — 60-year average.
Average high40°
Average low23°
Average precipitation0.07 in
Chance of precipitation43%
Record high54° (1966)
Record low-6° (1975)
Sat, 2139° / 21°0.06
39 °
Corvallis, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high39°
Average low21°
Average precipitation0.06 in
Chance of precipitation33%
Record high55° (2018)
Record low-8° (1977)
Sun, 2238° / 20°0.08
38 °
Corvallis, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high38°
Average low20°
Average precipitation0.08 in
Chance of precipitation42%
Record high57° (2021)
Record low-12° (2007)
Mon, 2337° / 19°0.06
37 °
Corvallis, Monday, 23 November
Climate normal for this date — 60-year average.
Average high37°
Average low19°
Average precipitation0.06 in
Chance of precipitation38%
Record high61° (2017)
Record low-17° (1985)
Tue, 2437° / 21°0.11
37 °
Corvallis, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.11 in
Chance of precipitation53%
Record high54° (1976)
Record low-13° (2010)
Wed, 2536° / 20°0.14
36 °
Corvallis, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.14 in
Chance of precipitation53%
Record high51° (2017)
Record low-17° (1993)
Thu, 2635° / 19°0.07
35 °
Corvallis, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.07 in
Chance of precipitation35%
Record high55° (2017)
Record low-9° (1993)
Fri, 2735° / 19°0.06
35 °
Corvallis, Friday, 27 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.06 in
Chance of precipitation42%
Record high54° (2021)
Record low-7° (2015)
Sat, 2836° / 20°0.08
36 °
Corvallis, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.08 in
Chance of precipitation38%
Record high61° (2021)
Record low-7° (1979)
Sun, 2935° / 19°0.07
35 °
Corvallis, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.07 in
Chance of precipitation38%
Record high48° (2021)
Record low-7° (1979)
Mon, 3035° / 18°0.06
35 °
Corvallis, Monday, 30 November
Climate normal for this date — 60-year average.
Average high35°
Average low18°
Average precipitation0.06 in
Chance of precipitation35%
Record high50° (2021)
Record low-11° (1985)
Tue, 0135° / 19°0.09
35 °
Corvallis, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.09 in
Chance of precipitation42%
Record high62° (2021)
Record low-6° (1985)
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.