Monthly outlook for De Smet, SD: average high 60.7°, average low 43.9°. That is 3° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 11 October (80.1°), the coolest 17 October (24°).
60.7°/43.9°
Average high / low
+3°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
60.7°
56.4°
+2.4°
21 October – 30 October
60.7°
52.4°
+4.6°
31 October – 9 November
at normal
46.7°
—
October records over 66 years
86.4°1 October 2023All-time high
7.9°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Erwin (9 mi).
Mon, 1273° / 51°0
73 °
De Smet, Monday, 12 October
Mostly clear. High 73°, low 51°.
Pressure29.65 inHg
Wind5.9 mph NE
Humidity70%
Visibility6.2 mi
Dew point58°
Tue, 1354° / 47°0
54 °
De Smet, Tuesday, 13 October
Overcast. High 54°, low 47°.
Pressure30.03 inHg
Wind6.8 mph N
Humidity66%
Visibility6.2 mi
Dew point40°
Wed, 1457° / 43°0
57 °
De Smet, Wednesday, 14 October
Clear. High 57°, low 43°.
Pressure30.30 inHg
Wind5.3 mph NW
Humidity62%
Visibility6.2 mi
Dew point40°
Thu, 1559° / 46°0
59 °
De Smet, Thursday, 15 October
Overcast. High 59°, low 46°.
Pressure30.36 inHg
Wind8.7 mph NW
Humidity55%
Visibility—
Dew point40°
Fri, 1648° / 32°0
48 °
De Smet, Friday, 16 October
Overcast. High 48°, low 32°.
Pressure30.68 inHg
Wind15.9 mph N
Humidity51%
Visibility—
Dew point29°
Sat, 1741° / 24°0
41 °
De Smet, Saturday, 17 October
Clear. High 41°, low 24°.
Pressure30.68 inHg
Wind14.4 mph S
Humidity31%
Visibility—
Dew point8°
Sun, 1857° / 35°0
57 °
De Smet, Sunday, 18 October
Overcast. High 57°, low 35°.
Pressure30.15 inHg
Wind21 mph S
Humidity38%
Visibility—
Dew point24°
Mon, 1968° / 45°0
68 °
De Smet, Monday, 19 October
Clear. High 68°, low 45°.
Pressure30.15 inHg
Wind9.2 mph SE
Humidity39%
Visibility—
Dew point36°
Tue, 2070° / 49°0
70 °
De Smet, Tuesday, 20 October
Clear. High 70°, low 49°.
Pressure29.94 inHg
Wind17.5 mph S
Humidity34%
Visibility—
Dew point35°
Wed, 2164° / 51°0
64 °
De Smet, Wednesday, 21 October
Partly cloudy. High 64°, low 51°.
Pressure30.00 inHg
Wind16.4 mph NW
Humidity36%
Visibility—
Dew point34°
Thu, 2259° / 43°0
59 °
De Smet, Thursday, 22 October
Overcast. High 59°, low 43°.
Pressure30.27 inHg
Wind6.9 mph N
Humidity49%
Visibility—
Dew point36°
Fri, 2361° / 44°0
61 °
De Smet, Friday, 23 October
Overcast. High 61°, low 44°.
Pressure30.27 inHg
Wind8.8 mph SE
Humidity48%
Visibility—
Dew point37°
Sat, 2459° / 43°0
59 °
De Smet, Saturday, 24 October
Overcast. High 59°, low 43°.
Pressure30.24 inHg
Wind12.8 mph E
Humidity52%
Visibility—
Dew point37°
Sun, 2557° / 46°0
57 °
De Smet, Sunday, 25 October
Overcast. High 57°, low 46°.
Pressure30.15 inHg
Wind14.2 mph SE
Humidity57%
Visibility—
Dew point35°
Mon, 2664° / 45°0
64 °
De Smet, Monday, 26 October
Overcast. High 64°, low 45°.
Pressure29.77 inHg
Wind12.8 mph SW
Humidity63%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2752° / 37°0.09
52 °
De Smet, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation30%
Record high69° (1999)
Record low11° (2020)
Wed, 2851° / 36°0.03
51 °
De Smet, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.03 in
Chance of precipitation15%
Record high71° (2024)
Record low20° (2023)
Thu, 2951° / 36°0.06
51 °
De Smet, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.06 in
Chance of precipitation23%
Record high68° (2004)
Record low18° (1991)
Fri, 3049° / 36°0.1
49 °
De Smet, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation28%
Record high67° (1965)
Record low16° (1991)
Sat, 3149° / 34°0.06
49 °
De Smet, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.06 in
Chance of precipitation17%
Record high70° (1990)
Record low17° (2019)
Sun, 0148° / 34°0.06
48 °
De Smet, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (1990)
Record low17° (2002)
Mon, 0247° / 33°0.04
47 °
De Smet, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation15%
Record high70° (1978)
Record low8° (1991)
Tue, 0347° / 34°0.03
47 °
De Smet, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high70° (1978)
Record low6° (1991)
Wed, 0447° / 32°0.02
47 °
De Smet, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.02 in
Chance of precipitation10%
Record high68° (2015)
Record low-4° (1991)
Thu, 0547° / 33°0.04
47 °
De Smet, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation22%
Record high70° (2001)
Record low11° (2003)
Fri, 0646° / 32°0.03
46 °
De Smet, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high72° (2020)
Record low8° (2003)
Sat, 0747° / 31°0.02
47 °
De Smet, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.02 in
Chance of precipitation12%
Record high69° (2020)
Record low3° (1991)
Sun, 0846° / 31°0.07
46 °
De Smet, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.07 in
Chance of precipitation22%
Record high70° (2020)
Record low10° (2003)
Mon, 0943° / 30°0.09
43 °
De Smet, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.09 in
Chance of precipitation27%
Record high64° (1999)
Record low10° (2018)
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 De Smet, 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 De Smet, 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.