Monthly outlook for Big Bend, SD: average high 53.6°, average low 33.7°. That is 0.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (77.7°), the coolest 27 October (15.1°).
53.6°/33.7°
Average high / low
+0.3°
Above normal
1 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
53.9°
55.1°
-0.6°
30 October – 8 November
53°
49.3°
+2°
9 November – 18 November
at normal
45.1°
—
October records over 66 years
89.2°3 October 2025All-time high
-6.2°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Blackhawk (7 mi).
Wed, 2164° / 41°0
64 °
Big Bend, Wednesday, 21 October
Clear. High 64°, low 41°.
Pressure30.21 inHg
Wind5.2 mph SE
Humidity51%
Visibility6.2 mi
Dew point41°
Thu, 2274° / 52°0
74 °
Big Bend, Thursday, 22 October
Partly cloudy. High 74°, low 52°.
Pressure29.91 inHg
Wind4.8 mph S
Humidity40%
Visibility6.2 mi
Dew point47°
Fri, 2378° / 56°0
78 °
Big Bend, Friday, 23 October
Overcast. High 78°, low 56°.
Pressure29.62 inHg
Wind3 mph S
Humidity28%
Visibility6.2 mi
Dew point43°
Sat, 2450° / 35°0.02
50 °
Big Bend, Saturday, 24 October
Light rain. High 50°, low 35°.
Pressure30.36 inHg
Wind8.9 mph N
Humidity60%
Visibility6.2 mi
Dew point27°
Sun, 2544° / 31°0
44 °
Big Bend, Sunday, 25 October
Overcast. High 44°, low 31°.
Pressure30.39 inHg
Wind6.1 mph SE
Humidity55%
Visibility—
Dew point27°
Mon, 2636° / 25°0.28
36 °
Big Bend, Monday, 26 October
Snow. High 36°, low 25°.
Pressure30.62 inHg
Wind5.4 mph NE
Humidity96%
Visibility—
Dew point30°
Tue, 2741° / 15°0.01
41 °
Big Bend, Tuesday, 27 October
Light snow. High 41°, low 15°.
Pressure30.39 inHg
Wind6.2 mph W
Humidity70%
Visibility—
Dew point25°
Wed, 2842° / 25°0
42 °
Big Bend, Wednesday, 28 October
Partly cloudy. High 42°, low 25°.
Pressure30.36 inHg
Wind10.3 mph NW
Humidity58%
Visibility—
Dew point25°
Thu, 2941° / 22°0
41 °
Big Bend, Thursday, 29 October
Partly cloudy. High 41°, low 22°.
Pressure30.21 inHg
Wind13.2 mph S
Humidity64%
Visibility—
Dew point26°
Fri, 3058° / 34°0
58 °
Big Bend, Friday, 30 October
Overcast. High 58°, low 34°.
Pressure29.59 inHg
Wind6.9 mph W
Humidity36%
Visibility—
Dew point28°
Sat, 3155° / 35°0
55 °
Big Bend, Saturday, 31 October
Overcast. High 55°, low 35°.
Pressure29.47 inHg
Wind11.5 mph SW
Humidity37%
Visibility—
Dew point24°
Sun, 0153° / 32°0.03
53 °
Big Bend, Sunday, 1 November
Snow. High 53°, low 32°.
Pressure29.53 inHg
Wind12.6 mph W
Humidity36%
Visibility—
Dew point25°
Mon, 0247° / 28°0
47 °
Big Bend, Monday, 2 November
Mostly clear. High 47°, low 28°.
Pressure30.27 inHg
Wind8.1 mph E
Humidity32%
Visibility—
Dew point16°
Tue, 0360° / 34°0
60 °
Big Bend, Tuesday, 3 November
Overcast. High 60°, low 34°.
Pressure30.06 inHg
Wind8.8 mph NE
Humidity21%
Visibility—
Dew point18°
Wed, 0445° / 30°0
45 °
Big Bend, Wednesday, 4 November
Partly cloudy. High 45°, low 30°.
Pressure30.36 inHg
Wind12 mph SE
Humidity34%
Visibility—
Dew point14°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0550° / 31°0.03
50 °
Big Bend, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high77° (2020)
Record low2° (2003)
Fri, 0649° / 30°0.05
49 °
Big Bend, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.05 in
Chance of precipitation13%
Record high74° (2020)
Record low1° (2003)
Sat, 0749° / 30°0.04
49 °
Big Bend, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.04 in
Chance of precipitation13%
Record high76° (2020)
Record low5° (1991)
Sun, 0847° / 29°0.07
47 °
Big Bend, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.07 in
Chance of precipitation18%
Record high76° (1999)
Record low3° (2003)
Mon, 0944° / 28°0.07
44 °
Big Bend, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.07 in
Chance of precipitation23%
Record high69° (2001)
Record low0° (1966)
Tue, 1045° / 26°0.04
45 °
Big Bend, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.04 in
Chance of precipitation18%
Record high67° (2005)
Record low-5° (1986)
Wed, 1143° / 26°0.02
43 °
Big Bend, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.02 in
Chance of precipitation17%
Record high68° (2005)
Record low-4° (1986)
Thu, 1246° / 27°0.02
46 °
Big Bend, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low27°
Average precipitation0.02 in
Chance of precipitation18%
Record high72° (1999)
Record low-11° (1986)
Fri, 1346° / 28°0.04
46 °
Big Bend, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high71° (1999)
Record low-14° (1986)
Sat, 1446° / 29°0.02
46 °
Big Bend, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.02 in
Chance of precipitation20%
Record high74° (2025)
Record low-4° (2014)
Sun, 1546° / 28°0.02
46 °
Big Bend, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.02 in
Chance of precipitation12%
Record high69° (2021)
Record low2° (2014)
Mon, 1647° / 28°0.02
47 °
Big Bend, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.02 in
Chance of precipitation7%
Record high67° (2017)
Record low1° (2000)
Tue, 1744° / 28°0.02
44 °
Big Bend, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high65° (1999)
Record low0° (2000)
Wed, 1844° / 27°0.04
44 °
Big Bend, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2008)
Record low7° (2014)
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 Big Bend, 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 Big Bend, 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.