Monthly outlook for Cobb, MT: average high 55.7°, average low 37.6°. That is 0.4° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 17 October (71°), the coolest 13 October (29.2°).
55.7°/37.6°
Average high / low
−0.4°
Below normal
5 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
55.5°
57.8°
-1.3°
21 October – 30 October
56°
52.7°
+1.8°
31 October – 9 November
at normal
47°
—
October records over 66 years
88.3°3 October 2010All-time high
-5.4°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Corvallis (2 mi).
Mon, 1243° / 32°0.04
43 °
Cobb, Monday, 12 October
Snow. High 43°, low 32°.
Pressure30.09 inHg
Wind1.4 mph NE
Humidity83%
Visibility6.2 mi
Dew point28°
Tue, 1348° / 29°0
48 °
Cobb, Tuesday, 13 October
Clear. High 48°, low 29°.
Pressure30.21 inHg
Wind1.7 mph E
Humidity69%
Visibility6.2 mi
Dew point30°
Wed, 1457° / 31°0
57 °
Cobb, Wednesday, 14 October
Overcast. High 57°, low 31°.
Pressure30.21 inHg
Wind2.3 mph SE
Humidity49%
Visibility6.2 mi
Dew point31°
Thu, 1555° / 35°0
55 °
Cobb, Thursday, 15 October
Clear. High 55°, low 35°.
Pressure30.59 inHg
Wind0.5 mph W
Humidity50%
Visibility6.2 mi
Dew point32°
Fri, 1666° / 41°0
66 °
Cobb, Friday, 16 October
Clear. High 66°, low 41°.
Pressure30.36 inHg
Wind2.3 mph SE
Humidity40%
Visibility—
Dew point30°
Sat, 1771° / 40°0
71 °
Cobb, Saturday, 17 October
Overcast. High 71°, low 40°.
Pressure29.97 inHg
Wind5.8 mph S
Humidity34%
Visibility—
Dew point31°
Sun, 1868° / 49°0
68 °
Cobb, Sunday, 18 October
Mostly clear. High 68°, low 49°.
Pressure29.97 inHg
Wind4 mph N
Humidity40%
Visibility—
Dew point37°
Mon, 1961° / 46°0.04
61 °
Cobb, Monday, 19 October
Light rain. High 61°, low 46°.
Pressure29.74 inHg
Wind7.7 mph NW
Humidity37%
Visibility—
Dew point33°
Tue, 2047° / 39°0.32
47 °
Cobb, Tuesday, 20 October
Rain. High 47°, low 39°.
Pressure29.85 inHg
Wind6.8 mph SW
Humidity66%
Visibility—
Dew point35°
Wed, 2149° / 37°0
49 °
Cobb, Wednesday, 21 October
Partly cloudy. High 49°, low 37°.
Pressure30.18 inHg
Wind6.2 mph W
Humidity51%
Visibility—
Dew point28°
Thu, 2261° / 40°0
61 °
Cobb, Thursday, 22 October
Overcast. High 61°, low 40°.
Pressure30.24 inHg
Wind5.8 mph S
Humidity48%
Visibility—
Dew point35°
Fri, 2367° / 43°0
67 °
Cobb, Friday, 23 October
Overcast. High 67°, low 43°.
Pressure29.88 inHg
Wind6.3 mph S
Humidity40%
Visibility—
Dew point31°
Sat, 2449° / 37°0.22
49 °
Cobb, Saturday, 24 October
Rain. High 49°, low 37°.
Pressure29.88 inHg
Wind5.3 mph W
Humidity88%
Visibility—
Dew point41°
Sun, 2555° / 34°0
55 °
Cobb, Sunday, 25 October
Overcast. High 55°, low 34°.
Pressure30.03 inHg
Wind2.6 mph SW
Humidity43%
Visibility—
Dew point25°
Mon, 2656° / 37°0
56 °
Cobb, Monday, 26 October
Mostly clear. High 56°, low 37°.
Pressure30.15 inHg
Wind2.5 mph NE
Humidity43%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2752° / 32°0.07
52 °
Cobb, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low32°
Average precipitation0.07 in
Chance of precipitation28%
Record high66° (2024)
Record low8° (1996)
Wed, 2851° / 32°0.07
51 °
Cobb, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.07 in
Chance of precipitation32%
Record high67° (1987)
Record low9° (1971)
Thu, 2950° / 32°0.06
50 °
Cobb, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (1964)
Record low6° (1971)
Fri, 3049° / 31°0.04
49 °
Cobb, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation28%
Record high67° (2008)
Record low5° (1991)
Sat, 3148° / 31°0.08
48 °
Cobb, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.08 in
Chance of precipitation28%
Record high67° (2008)
Record low0° (1996)
Sun, 0149° / 31°0.07
49 °
Cobb, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.07 in
Chance of precipitation33%
Record high69° (2025)
Record low6° (1991)
Mon, 0248° / 30°0.08
48 °
Cobb, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.08 in
Chance of precipitation40%
Record high67° (2020)
Record low-13° (1991)
Tue, 0348° / 29°0.05
48 °
Cobb, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.05 in
Chance of precipitation23%
Record high67° (2020)
Record low1° (1973)
Wed, 0448° / 30°0.07
48 °
Cobb, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.07 in
Chance of precipitation47%
Record high64° (2021)
Record low1° (1973)
Thu, 0548° / 30°0.08
48 °
Cobb, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.08 in
Chance of precipitation37%
Record high68° (2020)
Record low0° (1961)
Fri, 0646° / 30°0.09
46 °
Cobb, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.09 in
Chance of precipitation48%
Record high65° (2012)
Record low1° (1971)
Sat, 0746° / 29°0.09
46 °
Cobb, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.09 in
Chance of precipitation47%
Record high59° (2016)
Record low2° (1990)
Sun, 0845° / 28°0.08
45 °
Cobb, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.08 in
Chance of precipitation42%
Record high64° (2019)
Record low4° (1994)
Mon, 0945° / 27°0.07
45 °
Cobb, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.07 in
Chance of precipitation40%
Record high65° (2016)
Record low5° (1986)
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 Cobb, 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 Cobb, 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.