Monthly outlook for Chance, MT: average high 56.8°, average low 39.6°. That is 0.1° below the climate normal for October. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 9 October (83.9°), the coolest 13 October (30.6°).
56.8°/39.6°
Average high / low
−0.1°
Below normal
6 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
57.3°
57.5°
-0.1°
19 October – 28 October
56°
54.6°
+0.8°
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°0.03
72 °
Chance, Saturday, 10 October
Light rain. High 72°, low 48°.
Pressure29.59 inHg
Wind2.8 mph NE
Humidity35%
Visibility6.2 mi
Dew point32°
Sun, 1148° / 37°0.58
48 °
Chance, Sunday, 11 October
Rain. High 48°, low 37°.
Pressure29.88 inHg
Wind13.8 mph N
Humidity84%
Visibility3.9 mi
Dew point40°
Mon, 1238° / 33°0.11
38 °
Chance, Monday, 12 October
Snow. High 38°, low 33°.
Pressure30.12 inHg
Wind10.4 mph N
Humidity88%
Visibility5.7 mi
Dew point30°
Tue, 1353° / 31°0
53 °
Chance, Tuesday, 13 October
Partly cloudy. High 53°, low 31°.
Pressure30.06 inHg
Wind4.1 mph NE
Humidity72%
Visibility5.4 mi
Dew point36°
Wed, 1451° / 40°0
51 °
Chance, Wednesday, 14 October
Overcast. High 51°, low 40°.
Pressure30.27 inHg
Wind4.1 mph NE
Humidity76%
Visibility—
Dew point38°
Thu, 1554° / 41°0.04
54 °
Chance, Thursday, 15 October
Light rain. High 54°, low 41°.
Pressure30.27 inHg
Wind21.1 mph N
Humidity66%
Visibility—
Dew point41°
Fri, 1645° / 34°0
45 °
Chance, Friday, 16 October
Light rain. High 45°, low 34°.
Pressure30.65 inHg
Wind13.8 mph N
Humidity59%
Visibility—
Dew point26°
Sat, 1763° / 37°0
63 °
Chance, Saturday, 17 October
Clear. High 63°, low 37°.
Pressure30.09 inHg
Wind14.9 mph SE
Humidity28%
Visibility—
Dew point20°
Sun, 1865° / 48°0
65 °
Chance, Sunday, 18 October
Partly cloudy. High 65°, low 48°.
Pressure29.94 inHg
Wind7.1 mph SE
Humidity30%
Visibility—
Dew point28°
Mon, 1966° / 50°0
66 °
Chance, Monday, 19 October
Overcast. High 66°, low 50°.
Pressure29.71 inHg
Wind21 mph W
Humidity27%
Visibility—
Dew point27°
Tue, 2055° / 40°0.06
55 °
Chance, Tuesday, 20 October
Snow. High 55°, low 40°.
Pressure29.68 inHg
Wind25.5 mph N
Humidity33%
Visibility—
Dew point26°
Wed, 2154° / 37°0.11
54 °
Chance, Wednesday, 21 October
Light rain. High 54°, low 37°.
Pressure30.09 inHg
Wind10.2 mph SW
Humidity37%
Visibility—
Dew point22°
Thu, 2255° / 39°0.04
55 °
Chance, Thursday, 22 October
Light rain. High 55°, low 39°.
Pressure29.80 inHg
Wind17.9 mph N
Humidity41%
Visibility—
Dew point29°
Fri, 2350° / 37°0.01
50 °
Chance, Friday, 23 October
Light rain. High 50°, low 37°.
Pressure30.27 inHg
Wind6.3 mph SW
Humidity34%
Visibility—
Dew point18°
Sat, 2455° / 37°0
55 °
Chance, Saturday, 24 October
Overcast. High 55°, low 37°.
Pressure30.18 inHg
Wind9.5 mph S
Humidity31%
Visibility—
Dew point18°
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.