Monthly outlook for Coloma, MT: average high 48.2°, average low 29.4°. That is 0.4° below the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 15 October (55.6°), the coolest 12 October (20°).
48.2°/29.4°
Average high / low
−0.4°
Below normal
3 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
46.6°
49.9°
-1.8°
20 October – 29 October
50.8°
45.7°
+2.9°
30 October – 8 November
at normal
39.7°
—
October records over 66 years
78.4°3 October 2010All-time high
-16.4°29 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Springtown (6 mi).
Sun, 1133° / 23°0.26
33 °
Coloma, Sunday, 11 October
Snow. High 33°, low 23°.
Pressure30.00 inHg
Wind6.5 mph NE
Humidity87%
Visibility6.2 mi
Dew point25°
Mon, 1240° / 20°0.13
40 °
Coloma, Monday, 12 October
Snow. High 40°, low 20°.
Pressure30.09 inHg
Wind1.4 mph E
Humidity79%
Visibility6.2 mi
Dew point24°
Tue, 1345° / 24°0
45 °
Coloma, Tuesday, 13 October
Clear. High 45°, low 24°.
Pressure30.15 inHg
Wind1.5 mph NW
Humidity69%
Visibility6.2 mi
Dew point28°
Wed, 1450° / 26°0
50 °
Coloma, Wednesday, 14 October
Clear. High 50°, low 26°.
Pressure30.21 inHg
Wind1.5 mph NW
Humidity59%
Visibility6.2 mi
Dew point27°
Thu, 1556° / 33°0
56 °
Coloma, Thursday, 15 October
Clear. High 56°, low 33°.
Pressure30.45 inHg
Wind2.6 mph SE
Humidity49%
Visibility—
Dew point28°
Fri, 1646° / 26°0
46 °
Coloma, Friday, 16 October
Partly cloudy. High 46°, low 26°.
Pressure30.62 inHg
Wind3.9 mph E
Humidity58%
Visibility—
Dew point23°
Sat, 1752° / 27°0
52 °
Coloma, Saturday, 17 October
Overcast. High 52°, low 27°.
Pressure30.15 inHg
Wind2.7 mph NW
Humidity46%
Visibility—
Dew point23°
Sun, 1853° / 36°0
53 °
Coloma, Sunday, 18 October
Partly cloudy. High 53°, low 36°.
Pressure29.97 inHg
Wind4.4 mph W
Humidity49%
Visibility—
Dew point29°
Mon, 1949° / 34°0
49 °
Coloma, Monday, 19 October
Overcast. High 49°, low 34°.
Pressure29.94 inHg
Wind7.7 mph W
Humidity58%
Visibility—
Dew point30°
Tue, 2042° / 31°0.01
42 °
Coloma, Tuesday, 20 October
Light rain. High 42°, low 31°.
Pressure30.24 inHg
Wind9 mph W
Humidity66%
Visibility—
Dew point27°
Wed, 2148° / 29°0
48 °
Coloma, Wednesday, 21 October
Overcast. High 48°, low 29°.
Pressure30.06 inHg
Wind15.2 mph W
Humidity51%
Visibility—
Dew point25°
Thu, 2251° / 25°0
51 °
Coloma, Thursday, 22 October
Overcast. High 51°, low 25°.
Pressure30.09 inHg
Wind2.6 mph NE
Humidity37%
Visibility—
Dew point16°
Fri, 2355° / 33°0
55 °
Coloma, Friday, 23 October
Overcast. High 55°, low 33°.
Pressure29.88 inHg
Wind4.7 mph NW
Humidity37%
Visibility—
Dew point20°
Sat, 2455° / 35°0
55 °
Coloma, Saturday, 24 October
Overcast. High 55°, low 35°.
Pressure30.18 inHg
Wind8.1 mph W
Humidity52%
Visibility—
Dew point30°
Sun, 2554° / 34°0
54 °
Coloma, Sunday, 25 October
Overcast. High 54°, low 34°.
Pressure30.33 inHg
Wind2.2 mph W
Humidity54%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2644° / 27°0.07
44 °
Coloma, Monday, 26 October
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.07 in
Chance of precipitation32%
Record high61° (1986)
Record low-1° (2020)
Tue, 2744° / 25°0.04
44 °
Coloma, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.04 in
Chance of precipitation28%
Record high60° (1998)
Record low-2° (1975)
Wed, 2843° / 25°0.07
43 °
Coloma, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high43°
Average low25°
Average precipitation0.07 in
Chance of precipitation30%
Record high59° (2008)
Record low-6° (2023)
Thu, 2942° / 24°0.05
42 °
Coloma, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.05 in
Chance of precipitation27%
Record high60° (1962)
Record low-16° (2019)
Fri, 3041° / 24°0.04
41 °
Coloma, Friday, 30 October
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.04 in
Chance of precipitation23%
Record high60° (1987)
Record low-9° (2019)
Sat, 3140° / 25°0.06
40 °
Coloma, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.06 in
Chance of precipitation32%
Record high60° (2014)
Record low-8° (1996)
Sun, 0141° / 24°0.07
41 °
Coloma, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.07 in
Chance of precipitation28%
Record high58° (2025)
Record low-8° (1984)
Mon, 0241° / 25°0.06
41 °
Coloma, Monday, 2 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.06 in
Chance of precipitation32%
Record high58° (1981)
Record low-18° (1991)
Tue, 0340° / 24°0.03
40 °
Coloma, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.03 in
Chance of precipitation27%
Record high56° (1981)
Record low-3° (1973)
Wed, 0441° / 25°0.07
41 °
Coloma, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.07 in
Chance of precipitation38%
Record high56° (2021)
Record low-6° (1973)
Thu, 0540° / 24°0.07
40 °
Coloma, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.07 in
Chance of precipitation33%
Record high58° (1980)
Record low-9° (1961)
Fri, 0639° / 23°0.07
39 °
Coloma, Friday, 6 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.07 in
Chance of precipitation47%
Record high57° (2012)
Record low4° (1961)
Sat, 0738° / 23°0.07
38 °
Coloma, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high38°
Average low23°
Average precipitation0.07 in
Chance of precipitation47%
Record high53° (2010)
Record low-1° (1961)
Sun, 0837° / 21°0.06
37 °
Coloma, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.06 in
Chance of precipitation38%
Record high57° (2016)
Record low-11° (1994)
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 Coloma, 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 Coloma, 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.