Monthly outlook for Johnson Siding, SD: average high 57.4°, average low 37.5°. That is 2.2° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (72.6°), the coolest 27 October (21.6°).
57.4°/37.5°
Average high / low
+2.2°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
55.7°
55.9°
-0.1°
29 October – 7 November
60.3°
49.7°
+5.9°
8 November – 17 November
at normal
45.4°
—
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).
Tue, 2063° / 41°0
63 °
Johnson Siding, Tuesday, 20 October
Clear. High 63°, low 41°.
Pressure29.97 inHg
Wind4.9 mph E
Humidity34%
Visibility6.2 mi
Dew point38°
Wed, 2160° / 36°0
60 °
Johnson Siding, Wednesday, 21 October
Clear. High 60°, low 36°.
Pressure30.18 inHg
Wind5.3 mph SE
Humidity52%
Visibility6.2 mi
Dew point42°
Thu, 2273° / 47°0
73 °
Johnson Siding, Thursday, 22 October
Mostly clear. High 73°, low 47°.
Pressure29.88 inHg
Wind4.5 mph S
Humidity39%
Visibility6.2 mi
Dew point46°
Fri, 2370° / 54°0
70 °
Johnson Siding, Friday, 23 October
Clear. High 70°, low 54°.
Pressure29.59 inHg
Wind12.9 mph SW
Humidity26%
Visibility6.2 mi
Dew point35°
Sat, 2453° / 40°0
53 °
Johnson Siding, Saturday, 24 October
Overcast. High 53°, low 40°.
Pressure30.15 inHg
Wind14.9 mph W
Humidity39%
Visibility—
Dew point25°
Sun, 2549° / 33°0
49 °
Johnson Siding, Sunday, 25 October
Clear. High 49°, low 33°.
Pressure30.27 inHg
Wind8.9 mph E
Humidity40%
Visibility—
Dew point23°
Mon, 2656° / 30°0
56 °
Johnson Siding, Monday, 26 October
Clear. High 56°, low 30°.
Pressure30.09 inHg
Wind6.4 mph NE
Humidity27%
Visibility—
Dew point20°
Tue, 2731° / 22°0
31 °
Johnson Siding, Tuesday, 27 October
Overcast. High 31°, low 22°.
Pressure30.74 inHg
Wind6.3 mph E
Humidity72%
Visibility—
Dew point19°
Wed, 2845° / 23°0
45 °
Johnson Siding, Wednesday, 28 October
Partly cloudy. High 45°, low 23°.
Pressure30.36 inHg
Wind11.5 mph SE
Humidity39%
Visibility—
Dew point18°
Thu, 2963° / 30°0
63 °
Johnson Siding, Thursday, 29 October
Overcast. High 63°, low 30°.
Pressure29.85 inHg
Wind7.2 mph SW
Humidity19%
Visibility—
Dew point17°
Fri, 3065° / 43°0
65 °
Johnson Siding, Friday, 30 October
Overcast. High 65°, low 43°.
Pressure29.85 inHg
Wind7.8 mph W
Humidity11%
Visibility—
Dew point6°
Sat, 3161° / 46°0
61 °
Johnson Siding, Saturday, 31 October
Overcast. High 61°, low 46°.
Pressure29.91 inHg
Wind7.5 mph W
Humidity19%
Visibility—
Dew point16°
Sun, 0151° / 39°0
51 °
Johnson Siding, Sunday, 1 November
Overcast. High 51°, low 39°.
Pressure30.15 inHg
Wind6.3 mph SE
Humidity45%
Visibility—
Dew point29°
Mon, 0262° / 39°0
62 °
Johnson Siding, Monday, 2 November
Clear. High 62°, low 39°.
Pressure29.91 inHg
Wind8.7 mph SW
Humidity36%
Visibility—
Dew point29°
Tue, 0359° / 42°0.02
59 °
Johnson Siding, Tuesday, 3 November
Light rain. High 59°, low 42°.
Pressure29.44 inHg
Wind18.8 mph W
Humidity47%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0451° / 31°0.01
51 °
Johnson Siding, 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 °
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)
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.