Monthly outlook for Big Bend, SD: average high 54.2°, average low 37.9°. That is 1.1° below the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 20 October (72.4°), the coolest 16 October (26.4°).
54.2°/37.9°
Average high / low
−1.1°
Below normal
4 / 3
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
55.9°
57.3°
-0.8°
23 October – 1 November
51.4°
52.7°
-0.7°
2 November – 11 November
at normal
47.6°
—
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, 1445° / 39°0.29
45 °
Big Bend, Wednesday, 14 October
Rain. High 45°, low 39°.
Pressure30.18 inHg
Wind5 mph S
Humidity80%
Visibility6.2 mi
Dew point41°
Thu, 1551° / 35°0.06
51 °
Big Bend, Thursday, 15 October
Light rain. High 51°, low 35°.
Pressure30.42 inHg
Wind16.8 mph NW
Humidity42%
Visibility6.2 mi
Dew point21°
Fri, 1658° / 26°0
58 °
Big Bend, Friday, 16 October
Clear. High 58°, low 26°.
Pressure30.59 inHg
Wind6.6 mph SE
Humidity40%
Visibility6.2 mi
Dew point17°
Sat, 1771° / 48°0
71 °
Big Bend, Saturday, 17 October
Clear. High 71°, low 48°.
Pressure29.94 inHg
Wind15.6 mph W
Humidity22%
Visibility—
Dew point28°
Sun, 1860° / 45°0
60 °
Big Bend, Sunday, 18 October
Mostly clear. High 60°, low 45°.
Pressure30.00 inHg
Wind7.9 mph W
Humidity35%
Visibility—
Dew point31°
Mon, 1969° / 39°0
69 °
Big Bend, Monday, 19 October
Clear. High 69°, low 39°.
Pressure29.88 inHg
Wind15.3 mph S
Humidity27%
Visibility—
Dew point26°
Tue, 2072° / 49°0
72 °
Big Bend, Tuesday, 20 October
Overcast. High 72°, low 49°.
Pressure29.65 inHg
Wind12.2 mph SW
Humidity27%
Visibility—
Dew point33°
Wed, 2150° / 38°0
50 °
Big Bend, Wednesday, 21 October
Overcast. High 50°, low 38°.
Pressure29.88 inHg
Wind14 mph N
Humidity52%
Visibility—
Dew point31°
Thu, 2241° / 37°0.1
41 °
Big Bend, Thursday, 22 October
Snow. High 41°, low 37°.
Pressure29.88 inHg
Wind5.6 mph N
Humidity92%
Visibility—
Dew point37°
Fri, 2341° / 36°0
41 °
Big Bend, Friday, 23 October
Overcast. High 41°, low 36°.
Pressure30.03 inHg
Wind16.8 mph NW
Humidity68%
Visibility—
Dew point31°
Sat, 2450° / 33°0
50 °
Big Bend, Saturday, 24 October
Partly cloudy. High 50°, low 33°.
Pressure30.33 inHg
Wind16.4 mph NW
Humidity26%
Visibility—
Dew point14°
Sun, 2552° / 38°0
52 °
Big Bend, Sunday, 25 October
Clear. High 52°, low 38°.
Pressure30.33 inHg
Wind16 mph NW
Humidity42%
Visibility—
Dew point28°
Mon, 2653° / 31°0
53 °
Big Bend, Monday, 26 October
Clear. High 53°, low 31°.
Pressure30.15 inHg
Wind14.7 mph S
Humidity36%
Visibility—
Dew point24°
Tue, 2765° / 39°0
65 °
Big Bend, Tuesday, 27 October
Clear. High 65°, low 39°.
Pressure29.62 inHg
Wind12.3 mph N
Humidity24%
Visibility—
Dew point24°
Wed, 2846° / 34°0
46 °
Big Bend, Wednesday, 28 October
Overcast. High 46°, low 34°.
Pressure30.09 inHg
Wind21 mph NW
Humidity67%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2951° / 33°0.09
51 °
Big Bend, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.09 in
Chance of precipitation33%
Record high74° (1968)
Record low2° (1991)
Fri, 3050° / 33°0.04
50 °
Big Bend, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high75° (1968)
Record low-3° (1991)
Sat, 3150° / 32°0.04
50 °
Big Bend, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.04 in
Chance of precipitation15%
Record high73° (1990)
Record low1° (2002)
Sun, 0149° / 32°0.06
49 °
Big Bend, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.06 in
Chance of precipitation17%
Record high72° (2022)
Record low-2° (2002)
Mon, 0249° / 31°0.04
49 °
Big Bend, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2008)
Record low-3° (1991)
Tue, 0349° / 32°0.04
49 °
Big Bend, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (2020)
Record low2° (1991)
Wed, 0451° / 31°0.01
51 °
Big Bend, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.01 in
Chance of precipitation8%
Record high73° (1978)
Record low8° (1995)
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)
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.