Monthly outlook for Corvallis, MT: average high 52.2°, average low 36.1°. That is 3.4° above the climate normal for October. Precipitation is expected on 5 days (about 0.3 inches), against a normal of 6 days and 1.1 inches. The warmest day looks like 10 November (59.2°), the coolest 13 November (31.8°).
52.2°/36.1°
Average high / low
+3.4°
Above normal
5 / 6
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
51.8°
47.4°
+2.4°
9 November – 18 November
52.7°
42.8°
+5.5°
19 November – 28 November
at normal
37.2°
—
October records over 66 years
88.3°3 October 2010All-time high
-5.4°26 October 2020All-time low
Sat, 3152° / 38°0
52 °
Corvallis, Saturday, 31 October
Overcast. High 52°, low 38°.
Pressure30.06 inHg
Wind0.1 mph NE
Humidity78%
Visibility6.2 mi
Dew point38°
Sun, 0145° / 38°0.07
45 °
Corvallis, Sunday, 1 November
Light rain. High 45°, low 38°.
Pressure29.94 inHg
Wind0.3 mph NE
Humidity88%
Visibility6.2 mi
Dew point39°
Mon, 0249° / 34°0
49 °
Corvallis, Monday, 2 November
Partly cloudy. High 49°, low 34°.
Pressure30.39 inHg
Wind2.2 mph SE
Humidity63%
Visibility6.2 mi
Dew point33°
Tue, 0356° / 35°0
56 °
Corvallis, Tuesday, 3 November
Overcast. High 56°, low 35°.
Pressure30.27 inHg
Wind1.9 mph N
Humidity46%
Visibility—
Dew point29°
Wed, 0454° / 39°0
54 °
Corvallis, Wednesday, 4 November
Mostly clear. High 54°, low 39°.
Pressure30.09 inHg
Wind2.5 mph N
Humidity47%
Visibility—
Dew point29°
Thu, 0556° / 37°0
56 °
Corvallis, Thursday, 5 November
Overcast. High 56°, low 37°.
Pressure29.91 inHg
Wind2.7 mph S
Humidity42%
Visibility—
Dew point27°
Fri, 0655° / 36°0.09
55 °
Corvallis, Friday, 6 November
Snow. High 55°, low 36°.
Pressure29.77 inHg
Wind4.3 mph SW
Humidity53%
Visibility—
Dew point32°
Sat, 0747° / 34°0
47 °
Corvallis, Saturday, 7 November
Partly cloudy. High 47°, low 34°.
Pressure30.27 inHg
Wind2.8 mph SW
Humidity58%
Visibility—
Dew point29°
Sun, 0856° / 34°0
56 °
Corvallis, Sunday, 8 November
Clear. High 56°, low 34°.
Pressure30.21 inHg
Wind3.5 mph S
Humidity37%
Visibility—
Dew point22°
Mon, 0957° / 36°0
57 °
Corvallis, Monday, 9 November
Overcast. High 57°, low 36°.
Pressure29.91 inHg
Wind4.3 mph S
Humidity37%
Visibility—
Dew point23°
Tue, 1059° / 43°0
59 °
Corvallis, Tuesday, 10 November
Overcast. High 59°, low 43°.
Pressure29.77 inHg
Wind6.5 mph S
Humidity40%
Visibility—
Dew point29°
Wed, 1153° / 39°0.06
53 °
Corvallis, Wednesday, 11 November
Light rain. High 53°, low 39°.
Pressure29.41 inHg
Wind6.4 mph W
Humidity55%
Visibility—
Dew point32°
Thu, 1247° / 35°0.04
47 °
Corvallis, Thursday, 12 November
Snow. High 47°, low 35°.
Pressure29.74 inHg
Wind6.5 mph W
Humidity56%
Visibility—
Dew point30°
Fri, 1348° / 32°0
48 °
Corvallis, Friday, 13 November
Light rain. High 48°, low 32°.
Pressure30.21 inHg
Wind4.5 mph S
Humidity56%
Visibility—
Dew point27°
Sat, 1452° / 33°0.02
52 °
Corvallis, Saturday, 14 November
Light rain. High 52°, low 33°.
Pressure30.03 inHg
Wind6.2 mph S
Humidity41%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1543° / 24°0.03
43 °
Corvallis, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low24°
Average precipitation0.03 in
Chance of precipitation15%
Record high63° (2021)
Record low2° (2000)
Mon, 1642° / 25°0.06
42 °
Corvallis, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.06 in
Chance of precipitation40%
Record high59° (2001)
Record low-6° (1961)
Tue, 1741° / 26°0.07
41 °
Corvallis, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.07 in
Chance of precipitation48%
Record high57° (2008)
Record low-1° (1961)
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)
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.