Monthly outlook for Chance, MT: average high 59.6°, average low 41.8°. That is 1.5° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 9 October (84°), the coolest 13 October (29.4°).
59.6°/41.8°
Average high / low
+1.5°
Above normal
4 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
56.9°
57.5°
-0.3°
19 October – 28 October
64°
54.6°
+5.2°
29 October – 7 November
at normal
47.9°
—
October records over 66 years
84.6°1 October 2011All-time high
-14.1°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Clark (9 mi).
Sat, 1072° / 48°0.01
72 °
Chance, Saturday, 10 October
Light rain. High 72°, low 48°.
Pressure29.56 inHg
Wind4.7 mph NE
Humidity33%
Visibility6.2 mi
Dew point31°
Sun, 1146° / 36°0.48
46 °
Chance, Sunday, 11 October
Rain. High 46°, low 36°.
Pressure29.88 inHg
Wind12.1 mph N
Humidity84%
Visibility4.9 mi
Dew point38°
Mon, 1236° / 31°0.11
36 °
Chance, Monday, 12 October
Snow. High 36°, low 31°.
Pressure30.15 inHg
Wind11.5 mph N
Humidity89%
Visibility6.2 mi
Dew point29°
Tue, 1341° / 29°0.07
41 °
Chance, Tuesday, 13 October
Light rain. High 41°, low 29°.
Pressure30.12 inHg
Wind3.1 mph E
Humidity82%
Visibility6.2 mi
Dew point33°
Wed, 1455° / 39°0.04
55 °
Chance, Wednesday, 14 October
Light rain. High 55°, low 39°.
Pressure30.00 inHg
Wind3.7 mph S
Humidity67%
Visibility—
Dew point38°
Thu, 1554° / 42°0
54 °
Chance, Thursday, 15 October
Mostly clear. High 54°, low 42°.
Pressure30.24 inHg
Wind19.3 mph N
Humidity56%
Visibility—
Dew point35°
Fri, 1648° / 35°0.02
48 °
Chance, Friday, 16 October
Snow. High 48°, low 35°.
Pressure30.62 inHg
Wind22.5 mph N
Humidity45%
Visibility—
Dew point21°
Sat, 1767° / 43°0
67 °
Chance, Saturday, 17 October
Overcast. High 67°, low 43°.
Pressure30.09 inHg
Wind10.8 mph SE
Humidity24%
Visibility—
Dew point21°
Sun, 1865° / 44°0
65 °
Chance, Sunday, 18 October
Overcast. High 65°, low 44°.
Pressure30.03 inHg
Wind7.5 mph SE
Humidity29%
Visibility—
Dew point24°
Mon, 1971° / 51°0
71 °
Chance, Monday, 19 October
Overcast. High 71°, low 51°.
Pressure29.83 inHg
Wind9.6 mph SE
Humidity21%
Visibility—
Dew point22°
Tue, 2059° / 50°0
59 °
Chance, Tuesday, 20 October
Partly cloudy. High 59°, low 50°.
Pressure30.09 inHg
Wind13.9 mph N
Humidity40%
Visibility—
Dew point32°
Wed, 2168° / 45°0
68 °
Chance, Wednesday, 21 October
Partly cloudy. High 68°, low 45°.
Pressure30.00 inHg
Wind12 mph SE
Humidity25%
Visibility—
Dew point23°
Thu, 2253° / 42°0
53 °
Chance, Thursday, 22 October
Partly cloudy. High 53°, low 42°.
Pressure30.39 inHg
Wind13.8 mph N
Humidity35%
Visibility—
Dew point23°
Fri, 2361° / 40°0
61 °
Chance, Friday, 23 October
Clear. High 61°, low 40°.
Pressure30.18 inHg
Wind13.5 mph SE
Humidity29%
Visibility—
Dew point21°
Sat, 2471° / 48°0
71 °
Chance, Saturday, 24 October
Partly cloudy. High 71°, low 48°.
Pressure29.97 inHg
Wind9.3 mph SE
Humidity15%
Visibility—
Dew point14°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2554° / 32°0.04
54 °
Chance, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high54°
Average low32°
Average precipitation0.04 in
Chance of precipitation23%
Record high70° (2014)
Record low-7° (2020)
Mon, 2653° / 31°0.06
53 °
Chance, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low31°
Average precipitation0.06 in
Chance of precipitation22%
Record high68° (2024)
Record low-8° (2020)
Tue, 2752° / 30°0.06
52 °
Chance, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low30°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (2024)
Record low0° (1996)
Wed, 2851° / 29°0.08
51 °
Chance, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low29°
Average precipitation0.08 in
Chance of precipitation33%
Record high68° (1987)
Record low5° (2023)
Thu, 2949° / 30°0.07
49 °
Chance, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1962)
Record low-12° (1971)
Fri, 3049° / 27°0.06
49 °
Chance, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low27°
Average precipitation0.06 in
Chance of precipitation28%
Record high68° (1962)
Record low-14° (1991)
Sat, 3148° / 28°0.08
48 °
Chance, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.08 in
Chance of precipitation32%
Record high65° (1987)
Record low-9° (1972)
Sun, 0148° / 28°0.06
48 °
Chance, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.06 in
Chance of precipitation30%
Record high65° (1988)
Record low-10° (2002)
Mon, 0247° / 26°0.06
47 °
Chance, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low26°
Average precipitation0.06 in
Chance of precipitation30%
Record high64° (1965)
Record low-15° (1995)
Tue, 0348° / 27°0.03
48 °
Chance, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low27°
Average precipitation0.03 in
Chance of precipitation23%
Record high66° (2020)
Record low-13° (1991)
Wed, 0449° / 26°0.04
49 °
Chance, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low26°
Average precipitation0.04 in
Chance of precipitation25%
Record high65° (1962)
Record low-1° (1973)
Thu, 0548° / 28°0.06
48 °
Chance, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.06 in
Chance of precipitation30%
Record high65° (2010)
Record low-14° (2003)
Fri, 0647° / 26°0.06
47 °
Chance, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low26°
Average precipitation0.06 in
Chance of precipitation30%
Record high65° (1999)
Record low-11° (2003)
Sat, 0747° / 26°0.05
47 °
Chance, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low26°
Average precipitation0.05 in
Chance of precipitation32%
Record high66° (1999)
Record low-3° (1990)
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 Chance, 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 Chance, 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.