Monthly outlook for Johnson Siding, SD: average high 55°, average low 34.9°. That is 1.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (73.5°), the coolest 27 October (13.2°).
55°/34.9°
Average high / low
+1.1°
Above normal
4 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
53.4°
55.1°
-1°
30 October – 8 November
57.7°
49.3°
+4.7°
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, 2162° / 41°0
62 °
Johnson Siding, Wednesday, 21 October
Mostly clear. High 62°, low 41°.
Pressure30.18 inHg
Wind5.6 mph SE
Humidity51%
Visibility6.2 mi
Dew point42°
Thu, 2272° / 51°0
72 °
Johnson Siding, Thursday, 22 October
Clear. High 72°, low 51°.
Pressure29.91 inHg
Wind4.4 mph S
Humidity36%
Visibility6.2 mi
Dew point45°
Fri, 2374° / 52°0
74 °
Johnson Siding, Friday, 23 October
Overcast. High 74°, low 52°.
Pressure29.65 inHg
Wind9.1 mph SW
Humidity26%
Visibility6.2 mi
Dew point39°
Sat, 2445° / 35°0
45 °
Johnson Siding, Saturday, 24 October
Clear. High 45°, low 35°.
Pressure30.39 inHg
Wind6.8 mph N
Humidity44%
Visibility6.2 mi
Dew point11°
Sun, 2538° / 28°0.27
38 °
Johnson Siding, Sunday, 25 October
Snow. High 38°, low 28°.
Pressure30.45 inHg
Wind8.5 mph SE
Humidity76%
Visibility—
Dew point28°
Mon, 2633° / 23°0.08
33 °
Johnson Siding, Monday, 26 October
Light snow. High 33°, low 23°.
Pressure30.47 inHg
Wind14.2 mph NW
Humidity53%
Visibility—
Dew point17°
Tue, 2746° / 13°0
46 °
Johnson Siding, Tuesday, 27 October
Clear. High 46°, low 13°.
Pressure30.50 inHg
Wind7.7 mph SE
Humidity27%
Visibility—
Dew point5°
Wed, 2850° / 30°0
50 °
Johnson Siding, Wednesday, 28 October
Clear. High 50°, low 30°.
Pressure30.15 inHg
Wind12.4 mph N
Humidity20%
Visibility—
Dew point8°
Thu, 2945° / 26°0
45 °
Johnson Siding, Thursday, 29 October
Clear. High 45°, low 26°.
Pressure30.24 inHg
Wind7 mph NE
Humidity39%
Visibility—
Dew point18°
Fri, 3053° / 27°0
53 °
Johnson Siding, Friday, 30 October
Mostly clear. High 53°, low 27°.
Pressure30.06 inHg
Wind14.5 mph S
Humidity30%
Visibility—
Dew point19°
Sat, 3157° / 35°0
57 °
Johnson Siding, Saturday, 31 October
Clear. High 57°, low 35°.
Pressure29.97 inHg
Wind13.8 mph NW
Humidity24%
Visibility—
Dew point18°
Sun, 0161° / 32°0
61 °
Johnson Siding, Sunday, 1 November
Mostly clear. High 61°, low 32°.
Pressure29.94 inHg
Wind7.5 mph S
Humidity30%
Visibility—
Dew point24°
Mon, 0264° / 45°0
64 °
Johnson Siding, Monday, 2 November
Overcast. High 64°, low 45°.
Pressure29.71 inHg
Wind16.9 mph W
Humidity36%
Visibility—
Dew point33°
Tue, 0358° / 42°0.1
58 °
Johnson Siding, Tuesday, 3 November
Light rain. High 58°, low 42°.
Pressure29.83 inHg
Wind12.5 mph W
Humidity38%
Visibility—
Dew point31°
Wed, 0454° / 38°0.05
54 °
Johnson Siding, Wednesday, 4 November
Light rain. High 54°, low 38°.
Pressure29.97 inHg
Wind7.4 mph W
Humidity38%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0550° / 31°0.03
50 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 °
Johnson Siding, 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 Johnson Siding, 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 Johnson Siding, 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.