Monthly outlook for Boulder Canyon, SD: average high 48.9°, average low 34.4°. That is 0.5° above the climate normal for October. Precipitation is expected on 7 days (about 1.7 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 31 October (66.6°), the coolest 14 November (23.1°).
48.9°/34.4°
Average high / low
+0.5°
Above normal
7 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
51.9°
49.6°
+1.3°
9 November – 18 November
44°
45.4°
-0.8°
19 November – 28 November
at normal
40.5°
—
October records over 66 years
89.8°4 October 1963All-time high
-4.2°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Whitewood (5 mi).
Sat, 3167° / 41°0
67 °
Boulder Canyon, Saturday, 31 October
Overcast. High 67°, low 41°.
Pressure29.91 inHg
Wind6.6 mph E
Humidity67%
Visibility—
Dew point49°
Sun, 0159° / 41°0.12
59 °
Boulder Canyon, Sunday, 1 November
Rain. High 59°, low 41°.
Pressure29.91 inHg
Wind7 mph E
Humidity67%
Visibility6.2 mi
Dew point45°
Mon, 0249° / 36°0.6
49 °
Boulder Canyon, Monday, 2 November
Rain. High 49°, low 36°.
Pressure29.91 inHg
Wind21 mph NW
Humidity94%
Visibility3.3 mi
Dew point41°
Tue, 0353° / 33°0.09
53 °
Boulder Canyon, Tuesday, 3 November
Light rain. High 53°, low 33°.
Pressure30.27 inHg
Wind11.5 mph NW
Humidity46%
Visibility6.2 mi
Dew point27°
Wed, 0450° / 37°0
50 °
Boulder Canyon, Wednesday, 4 November
Partly cloudy. High 50°, low 37°.
Pressure30.15 inHg
Wind12.1 mph NW
Humidity43%
Visibility—
Dew point28°
Thu, 0549° / 35°0
49 °
Boulder Canyon, Thursday, 5 November
Overcast. High 49°, low 35°.
Pressure29.74 inHg
Wind16 mph NW
Humidity40%
Visibility—
Dew point24°
Fri, 0650° / 33°0
50 °
Boulder Canyon, Friday, 6 November
Clear. High 50°, low 33°.
Pressure29.88 inHg
Wind11 mph E
Humidity47%
Visibility—
Dew point27°
Sat, 0748° / 39°0.29
48 °
Boulder Canyon, Saturday, 7 November
Rain. High 48°, low 39°.
Pressure29.91 inHg
Wind8.3 mph SE
Humidity61%
Visibility—
Dew point34°
Sun, 0839° / 35°0.09
39 °
Boulder Canyon, Sunday, 8 November
Light rain. High 39°, low 35°.
Pressure30.24 inHg
Wind6.1 mph SE
Humidity96%
Visibility—
Dew point37°
Mon, 0940° / 31°0
40 °
Boulder Canyon, Monday, 9 November
Overcast. High 40°, low 31°.
Pressure30.12 inHg
Wind9.8 mph SE
Humidity81%
Visibility—
Dew point33°
Tue, 1045° / 29°0
45 °
Boulder Canyon, Tuesday, 10 November
Partly cloudy. High 45°, low 29°.
Pressure29.94 inHg
Wind13.6 mph SE
Humidity57%
Visibility—
Dew point27°
Wed, 1157° / 34°0
57 °
Boulder Canyon, Wednesday, 11 November
Clear. High 57°, low 34°.
Pressure29.59 inHg
Wind13.2 mph SW
Humidity36%
Visibility—
Dew point25°
Thu, 1248° / 39°0
48 °
Boulder Canyon, Thursday, 12 November
Overcast. High 48°, low 39°.
Pressure29.44 inHg
Wind23.9 mph NW
Humidity58%
Visibility—
Dew point31°
Fri, 1338° / 30°0.42
38 °
Boulder Canyon, Friday, 13 November
Snow. High 38°, low 30°.
Pressure29.83 inHg
Wind25.8 mph NW
Humidity97%
Visibility—
Dew point32°
Sat, 1435° / 23°0.12
35 °
Boulder Canyon, Saturday, 14 November
Snow. High 35°, low 23°.
Pressure30.18 inHg
Wind16.3 mph NW
Humidity90%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1546° / 28°0.03
46 °
Boulder Canyon, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high67° (2021)
Record low2° (1978)
Mon, 1647° / 28°0.02
47 °
Boulder Canyon, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.02 in
Chance of precipitation13%
Record high66° (1979)
Record low2° (2014)
Tue, 1745° / 28°0.04
45 °
Boulder Canyon, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.04 in
Chance of precipitation25%
Record high65° (1999)
Record low1° (2000)
Wed, 1844° / 27°0.05
44 °
Boulder Canyon, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.05 in
Chance of precipitation22%
Record high69° (2008)
Record low5° (1996)
Thu, 1942° / 27°0.04
42 °
Boulder Canyon, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.04 in
Chance of precipitation23%
Record high65° (1989)
Record low1° (1985)
Fri, 2043° / 26°0.02
43 °
Boulder Canyon, Friday, 20 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.02 in
Chance of precipitation12%
Record high67° (1990)
Record low-11° (1985)
Sat, 2143° / 25°0.02
43 °
Boulder Canyon, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high43°
Average low25°
Average precipitation0.02 in
Chance of precipitation18%
Record high67° (2012)
Record low-13° (1977)
Sun, 2242° / 25°0.03
42 °
Boulder Canyon, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.03 in
Chance of precipitation23%
Record high64° (2017)
Record low-6° (1985)
Mon, 2341° / 24°0.03
41 °
Boulder Canyon, Monday, 23 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.03 in
Chance of precipitation17%
Record high72° (2017)
Record low-12° (1985)
Tue, 2442° / 25°0.02
42 °
Boulder Canyon, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.02 in
Chance of precipitation17%
Record high67° (1990)
Record low-6° (1993)
Wed, 2540° / 24°0.04
40 °
Boulder Canyon, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.04 in
Chance of precipitation28%
Record high65° (1960)
Record low-4° (1993)
Thu, 2637° / 22°0.08
37 °
Boulder Canyon, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.08 in
Chance of precipitation35%
Record high68° (2017)
Record low-11° (1985)
Fri, 2737° / 21°0.03
37 °
Boulder Canyon, Friday, 27 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.03 in
Chance of precipitation17%
Record high68° (2017)
Record low-14° (1985)
Sat, 2838° / 22°0.02
38 °
Boulder Canyon, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.02 in
Chance of precipitation18%
Record high62° (2020)
Record low-9° (2001)
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 Boulder Canyon, 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 Boulder Canyon, 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.