Monthly outlook for Colstrip, MT: average high 62.4°, average low 41.7°. That is 2.9° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 17 October (74.4°), the coolest 16 October (31.2°).
62.4°/41.7°
Average high / low
+2.9°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
64.2°
58.7°
+3.1°
24 October – 2 November
59.3°
53.3°
+3.3°
3 November – 12 November
at normal
48.1°
—
October records over 66 years
92.5°1 October 2011All-time high
-18.4°30 October 1991All-time low
Thu, 1550° / 37°0
50 °
Colstrip, Thursday, 15 October
Clear. High 50°, low 37°.
Pressure30.62 inHg
Wind18.6 mph NW
Humidity49%
Visibility6.2 mi
Dew point23°
Fri, 1664° / 31°0
64 °
Colstrip, Friday, 16 October
Clear. High 64°, low 31°.
Pressure30.50 inHg
Wind7.9 mph S
Humidity40%
Visibility6.2 mi
Dew point25°
Sat, 1774° / 39°0
74 °
Colstrip, Saturday, 17 October
Partly cloudy. High 74°, low 39°.
Pressure30.00 inHg
Wind4.5 mph SW
Humidity26%
Visibility6.2 mi
Dew point32°
Sun, 1862° / 46°0
62 °
Colstrip, Sunday, 18 October
Overcast. High 62°, low 46°.
Pressure30.18 inHg
Wind9.7 mph NW
Humidity37%
Visibility—
Dew point30°
Mon, 1968° / 41°0
68 °
Colstrip, Monday, 19 October
Overcast. High 68°, low 41°.
Pressure29.85 inHg
Wind5.8 mph W
Humidity37%
Visibility—
Dew point35°
Tue, 2067° / 51°0
67 °
Colstrip, Tuesday, 20 October
Partly cloudy. High 67°, low 51°.
Pressure29.94 inHg
Wind12.8 mph N
Humidity27%
Visibility—
Dew point30°
Wed, 2164° / 43°0
64 °
Colstrip, Wednesday, 21 October
Overcast. High 64°, low 43°.
Pressure30.12 inHg
Wind13.3 mph SE
Humidity31%
Visibility—
Dew point25°
Thu, 2270° / 46°0
70 °
Colstrip, Thursday, 22 October
Clear. High 70°, low 46°.
Pressure29.83 inHg
Wind7.8 mph SE
Humidity33%
Visibility—
Dew point32°
Fri, 2361° / 51°0
61 °
Colstrip, Friday, 23 October
Overcast. High 61°, low 51°.
Pressure29.97 inHg
Wind19.6 mph N
Humidity30%
Visibility—
Dew point29°
Sat, 2449° / 39°0
49 °
Colstrip, Saturday, 24 October
Partly cloudy. High 49°, low 39°.
Pressure30.45 inHg
Wind14.1 mph NW
Humidity45%
Visibility—
Dew point24°
Sun, 2563° / 35°0
63 °
Colstrip, Sunday, 25 October
Partly cloudy. High 63°, low 35°.
Pressure30.03 inHg
Wind8.4 mph W
Humidity21%
Visibility—
Dew point15°
Mon, 2665° / 41°0
65 °
Colstrip, Monday, 26 October
Partly cloudy. High 65°, low 41°.
Pressure29.83 inHg
Wind7.1 mph E
Humidity23%
Visibility—
Dew point19°
Tue, 2756° / 42°0
56 °
Colstrip, Tuesday, 27 October
Overcast. High 56°, low 42°.
Pressure29.74 inHg
Wind20.4 mph NW
Humidity38%
Visibility—
Dew point28°
Wed, 2862° / 40°0
62 °
Colstrip, Wednesday, 28 October
Clear. High 62°, low 40°.
Pressure29.74 inHg
Wind13 mph S
Humidity37%
Visibility—
Dew point29°
Thu, 2959° / 49°0
59 °
Colstrip, Thursday, 29 October
Overcast. High 59°, low 49°.
Pressure29.59 inHg
Wind13.5 mph N
Humidity35%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3052° / 31°0.03
52 °
Colstrip, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.03 in
Chance of precipitation18%
Record high73° (1990)
Record low-18° (1991)
Sat, 3151° / 33°0.03
51 °
Colstrip, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.03 in
Chance of precipitation18%
Record high77° (1999)
Record low3° (1972)
Sun, 0151° / 32°0.03
51 °
Colstrip, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.03 in
Chance of precipitation17%
Record high73° (1965)
Record low2° (1991)
Mon, 0250° / 31°0.02
50 °
Colstrip, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation20%
Record high76° (1965)
Record low-8° (1995)
Tue, 0350° / 31°0.02
50 °
Colstrip, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation15%
Record high70° (1981)
Record low-16° (1991)
Wed, 0452° / 32°0.03
52 °
Colstrip, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high73° (1983)
Record low9° (1995)
Thu, 0551° / 32°0.03
51 °
Colstrip, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.03 in
Chance of precipitation25%
Record high73° (2020)
Record low5° (1961)
Fri, 0649° / 31°0.04
49 °
Colstrip, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (2010)
Record low9° (1991)
Sat, 0749° / 31°0.03
49 °
Colstrip, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high73° (1999)
Record low1° (1991)
Sun, 0847° / 29°0.03
47 °
Colstrip, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high77° (1999)
Record low-3° (2000)
Mon, 0946° / 28°0.07
46 °
Colstrip, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.07 in
Chance of precipitation23%
Record high69° (2016)
Record low-7° (1966)
Tue, 1045° / 26°0.05
45 °
Colstrip, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.05 in
Chance of precipitation20%
Record high71° (2007)
Record low-18° (1986)
Wed, 1144° / 25°0.02
44 °
Colstrip, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.02 in
Chance of precipitation25%
Record high69° (1990)
Record low-5° (1986)
Thu, 1246° / 26°0.03
46 °
Colstrip, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low26°
Average precipitation0.03 in
Chance of precipitation15%
Record high77° (1999)
Record low-16° (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 Colstrip, 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 Colstrip, 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.