Monthly outlook for Chance, SD: average high 59.6°, average low 42.7°. That is 2.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 20 October (77.1°), the coolest 16 October (30.9°).
59.6°/42.7°
Average high / low
+2.3°
Above normal
2 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
61°
56.6°
+2.5°
23 October – 1 November
57.3°
52°
+2.9°
2 November – 11 November
at normal
45.6°
—
October records over 66 years
89.6°2 October 1997All-time high
-5.4°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Bison (12 mi).
Wed, 1457° / 37°0
57 °
Chance, Wednesday, 14 October
Overcast. High 57°, low 37°.
Pressure30.21 inHg
Wind6.1 mph S
Humidity52%
Visibility6.2 mi
Dew point37°
Thu, 1554° / 41°0
54 °
Chance, Thursday, 15 October
Clear. High 54°, low 41°.
Pressure30.42 inHg
Wind22.1 mph NW
Humidity43%
Visibility6.2 mi
Dew point26°
Fri, 1656° / 31°0
56 °
Chance, Friday, 16 October
Clear. High 56°, low 31°.
Pressure30.65 inHg
Wind11.1 mph S
Humidity46%
Visibility6.2 mi
Dew point23°
Sat, 1775° / 39°0
75 °
Chance, Saturday, 17 October
Clear. High 75°, low 39°.
Pressure29.94 inHg
Wind10 mph S
Humidity31%
Visibility—
Dew point33°
Sun, 1868° / 50°0
68 °
Chance, Sunday, 18 October
Clear. High 68°, low 50°.
Pressure29.94 inHg
Wind12.3 mph N
Humidity38%
Visibility—
Dew point36°
Mon, 1968° / 49°0
68 °
Chance, Monday, 19 October
Clear. High 68°, low 49°.
Pressure29.94 inHg
Wind15.5 mph SE
Humidity33%
Visibility—
Dew point33°
Tue, 2077° / 52°0
77 °
Chance, Tuesday, 20 October
Partly cloudy. High 77°, low 52°.
Pressure29.65 inHg
Wind18.8 mph SE
Humidity27%
Visibility—
Dew point33°
Wed, 2159° / 45°0.06
59 °
Chance, Wednesday, 21 October
Light rain. High 59°, low 45°.
Pressure29.59 inHg
Wind18.2 mph N
Humidity91%
Visibility—
Dew point55°
Thu, 2245° / 40°0.24
45 °
Chance, Thursday, 22 October
Rain. High 45°, low 40°.
Pressure29.83 inHg
Wind21.7 mph N
Humidity68%
Visibility—
Dew point33°
Fri, 2352° / 39°0
52 °
Chance, Friday, 23 October
Clear. High 52°, low 39°.
Pressure30.03 inHg
Wind17 mph NW
Humidity43%
Visibility—
Dew point28°
Sat, 2452° / 39°0
52 °
Chance, Saturday, 24 October
Overcast. High 52°, low 39°.
Pressure30.42 inHg
Wind14.4 mph NW
Humidity46%
Visibility—
Dew point28°
Sun, 2550° / 40°0.01
50 °
Chance, Sunday, 25 October
Light rain. High 50°, low 40°.
Pressure30.27 inHg
Wind17 mph NW
Humidity42%
Visibility—
Dew point26°
Mon, 2667° / 43°0
67 °
Chance, Monday, 26 October
Partly cloudy. High 67°, low 43°.
Pressure30.09 inHg
Wind23.4 mph NW
Humidity41%
Visibility—
Dew point37°
Tue, 2767° / 53°0
67 °
Chance, Tuesday, 27 October
Clear. High 67°, low 53°.
Pressure30.06 inHg
Wind21.8 mph NW
Humidity39%
Visibility—
Dew point37°
Wed, 2857° / 46°0
57 °
Chance, Wednesday, 28 October
Partly cloudy. High 57°, low 46°.
Pressure30.09 inHg
Wind8 mph NW
Humidity51%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2951° / 33°0.1
51 °
Chance, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.1 in
Chance of precipitation27%
Record high76° (1968)
Record low4° (1991)
Fri, 3049° / 32°0.03
49 °
Chance, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.03 in
Chance of precipitation18%
Record high76° (1968)
Record low-5° (1991)
Sat, 3149° / 32°0.04
49 °
Chance, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.04 in
Chance of precipitation7%
Record high74° (1990)
Record low-1° (1991)
Sun, 0149° / 32°0.04
49 °
Chance, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.04 in
Chance of precipitation10%
Record high72° (1965)
Record low3° (2002)
Mon, 0249° / 31°0.02
49 °
Chance, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high73° (2022)
Record low-3° (1991)
Tue, 0347° / 32°0.02
47 °
Chance, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.02 in
Chance of precipitation13%
Record high68° (2020)
Record low-7° (1991)
Wed, 0449° / 30°0.02
49 °
Chance, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation13%
Record high74° (1978)
Record low-6° (1991)
Thu, 0548° / 30°0.03
48 °
Chance, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation17%
Record high70° (2001)
Record low0° (2003)
Fri, 0647° / 29°0.03
47 °
Chance, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.03 in
Chance of precipitation8%
Record high70° (2009)
Record low-2° (1991)
Sat, 0747° / 29°0.04
47 °
Chance, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation12%
Record high72° (1999)
Record low-10° (1991)
Sun, 0845° / 29°0.03
45 °
Chance, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.03 in
Chance of precipitation17%
Record high73° (1999)
Record low2° (2000)
Mon, 0942° / 26°0.05
42 °
Chance, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.05 in
Chance of precipitation17%
Record high69° (2016)
Record low-4° (2000)
Tue, 1042° / 25°0.06
42 °
Chance, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (2007)
Record low-6° (1986)
Wed, 1140° / 24°0.01
40 °
Chance, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.01 in
Chance of precipitation8%
Record high65° (2005)
Record low-7° (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 Chance, SD 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, SD 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.