Monthly outlook for Mountain Plains, SD: average high 50.6°, average low 37.4°. That is 2.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 31 October (58°), the coolest 13 November (29.4°).
50.6°/37.4°
Average high / low
+2.1°
Above normal
4 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
51.6°
48.3°
+1.8°
8 November – 17 November
49.1°
44.4°
+2.6°
18 November – 27 November
at normal
39.8°
—
October records over 66 years
86.9°4 October 1963All-time high
-5.4°30 October 1991All-time low
Fri, 3051° / 37°0
51 °
Mountain Plains, Friday, 30 October
Overcast. High 51°, low 37°.
Pressure30.12 inHg
Wind2.8 mph NE
Humidity84%
Visibility6.2 mi
Dew point38°
Sat, 3158° / 39°0
58 °
Mountain Plains, Saturday, 31 October
Overcast. High 58°, low 39°.
Pressure29.94 inHg
Wind3.3 mph NW
Humidity79%
Visibility1.8 mi
Dew point45°
Sun, 0155° / 43°0
55 °
Mountain Plains, Sunday, 1 November
Overcast. High 55°, low 43°.
Pressure29.97 inHg
Wind4.8 mph NE
Humidity83%
Visibility—
Dew point46°
Mon, 0249° / 35°0.81
49 °
Mountain Plains, Monday, 2 November
Snow. High 49°, low 35°.
Pressure29.83 inHg
Wind18.3 mph W
Humidity80%
Visibility6.2 mi
Dew point40°
Tue, 0351° / 36°0.06
51 °
Mountain Plains, Tuesday, 3 November
Light rain. High 51°, low 36°.
Pressure30.18 inHg
Wind12.9 mph W
Humidity51%
Visibility—
Dew point28°
Wed, 0454° / 40°0
54 °
Mountain Plains, Wednesday, 4 November
Clear. High 54°, low 40°.
Pressure30.03 inHg
Wind8.5 mph SW
Humidity40%
Visibility—
Dew point28°
Thu, 0549° / 39°0.02
49 °
Mountain Plains, Thursday, 5 November
Light rain. High 49°, low 39°.
Pressure29.74 inHg
Wind10.3 mph E
Humidity50%
Visibility—
Dew point30°
Fri, 0643° / 39°0.04
43 °
Mountain Plains, Friday, 6 November
Light rain. High 43°, low 39°.
Pressure29.94 inHg
Wind5.2 mph E
Humidity77%
Visibility—
Dew point36°
Sat, 0750° / 39°0
50 °
Mountain Plains, Saturday, 7 November
Overcast. High 50°, low 39°.
Pressure30.00 inHg
Wind7.1 mph E
Humidity57%
Visibility—
Dew point34°
Sun, 0847° / 39°0
47 °
Mountain Plains, Sunday, 8 November
Overcast. High 47°, low 39°.
Pressure29.88 inHg
Wind7.1 mph S
Humidity69%
Visibility—
Dew point37°
Mon, 0951° / 37°0
51 °
Mountain Plains, Monday, 9 November
Clear. High 51°, low 37°.
Pressure30.03 inHg
Wind7.6 mph S
Humidity54%
Visibility—
Dew point32°
Tue, 1056° / 39°0
56 °
Mountain Plains, Tuesday, 10 November
Overcast. High 56°, low 39°.
Pressure29.77 inHg
Wind10 mph SW
Humidity37%
Visibility—
Dew point27°
Wed, 1155° / 38°0.02
55 °
Mountain Plains, Wednesday, 11 November
Light rain. High 55°, low 38°.
Pressure29.47 inHg
Wind15.6 mph SW
Humidity39%
Visibility—
Dew point30°
Thu, 1247° / 34°0
47 °
Mountain Plains, Thursday, 12 November
Clear. High 47°, low 34°.
Pressure29.74 inHg
Wind14.1 mph W
Humidity35%
Visibility—
Dew point18°
Fri, 1338° / 29°0.09
38 °
Mountain Plains, Friday, 13 November
Snow. High 38°, low 29°.
Pressure29.68 inHg
Wind11.1 mph NW
Humidity73%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1445° / 29°0.04
45 °
Mountain Plains, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.04 in
Chance of precipitation25%
Record high70° (2025)
Record low-5° (2014)
Sun, 1545° / 28°0.03
45 °
Mountain Plains, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high65° (1999)
Record low-1° (2014)
Mon, 1645° / 28°0.02
45 °
Mountain Plains, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation13%
Record high66° (2001)
Record low-1° (2014)
Tue, 1743° / 28°0.04
43 °
Mountain Plains, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.04 in
Chance of precipitation25%
Record high66° (1999)
Record low2° (1961)
Wed, 1843° / 26°0.05
43 °
Mountain Plains, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.05 in
Chance of precipitation22%
Record high66° (2008)
Record low1° (2022)
Thu, 1941° / 26°0.04
41 °
Mountain Plains, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.04 in
Chance of precipitation23%
Record high62° (1989)
Record low-2° (1985)
Fri, 2042° / 25°0.02
42 °
Mountain Plains, Friday, 20 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.02 in
Chance of precipitation12%
Record high63° (1990)
Record low-12° (1985)
Sat, 2142° / 25°0.02
42 °
Mountain Plains, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.02 in
Chance of precipitation18%
Record high64° (2012)
Record low-8° (1977)
Sun, 2241° / 25°0.03
41 °
Mountain Plains, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.03 in
Chance of precipitation23%
Record high60° (2017)
Record low-10° (1985)
Mon, 2339° / 24°0.03
39 °
Mountain Plains, Monday, 23 November
Climate normal for this date — 60-year average.
Average high39°
Average low24°
Average precipitation0.03 in
Chance of precipitation17%
Record high68° (2017)
Record low-11° (1985)
Tue, 2441° / 24°0.02
41 °
Mountain Plains, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.02 in
Chance of precipitation17%
Record high64° (1990)
Record low-8° (1993)
Wed, 2539° / 23°0.04
39 °
Mountain Plains, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.04 in
Chance of precipitation28%
Record high62° (2022)
Record low-5° (1993)
Thu, 2636° / 22°0.08
36 °
Mountain Plains, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.08 in
Chance of precipitation38%
Record high66° (2017)
Record low-9° (1985)
Fri, 2736° / 20°0.03
36 °
Mountain Plains, Friday, 27 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.03 in
Chance of precipitation17%
Record high64° (2017)
Record low-12° (1985)
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 Mountain Plains, 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 Mountain Plains, 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.