Monthly outlook for Thunder Butte, SD: average high 64.7°, average low 44.9°. That is 5.1° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (80.3°), the coolest 25 October (36.1°).
64.7°/44.9°
Average high / low
+5.1°
Above normal
2 / 3
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
65.9°
57.7°
+4.6°
27 October – 5 November
62.9°
51.1°
+6.6°
6 November – 15 November
at normal
44.9°
—
October records over 66 years
93.2°4 October 1963All-time high
-5.4°26 October 2020All-time low
Sun, 1868° / 47°0
68 °
Thunder Butte, Sunday, 18 October
Clear. High 68°, low 47°.
Pressure30.09 inHg
Wind13.2 mph NE
Humidity31%
Visibility6.2 mi
Dew point34°
Mon, 1962° / 39°0
62 °
Thunder Butte, Monday, 19 October
Clear. High 62°, low 39°.
Pressure30.24 inHg
Wind9.1 mph SE
Humidity43%
Visibility6.2 mi
Dew point35°
Tue, 2068° / 45°0
68 °
Thunder Butte, Tuesday, 20 October
Clear. High 68°, low 45°.
Pressure30.03 inHg
Wind8.3 mph SE
Humidity57%
Visibility6.2 mi
Dew point47°
Wed, 2166° / 48°0
66 °
Thunder Butte, Wednesday, 21 October
Clear. High 66°, low 48°.
Pressure30.18 inHg
Wind5.6 mph NE
Humidity65%
Visibility6.2 mi
Dew point51°
Thu, 2271° / 49°0
71 °
Thunder Butte, Thursday, 22 October
Partly cloudy. High 71°, low 49°.
Pressure30.03 inHg
Wind18 mph SE
Humidity65%
Visibility—
Dew point52°
Fri, 2380° / 59°0.04
80 °
Thunder Butte, Friday, 23 October
Light rain. High 80°, low 59°.
Pressure29.65 inHg
Wind24.7 mph N
Humidity60%
Visibility—
Dew point56°
Sat, 2449° / 40°0.94
49 °
Thunder Butte, Saturday, 24 October
Heavy rain. High 49°, low 40°.
Pressure30.36 inHg
Wind26.8 mph N
Humidity63%
Visibility—
Dew point32°
Sun, 2554° / 36°0
54 °
Thunder Butte, Sunday, 25 October
Clear. High 54°, low 36°.
Pressure30.47 inHg
Wind15.2 mph S
Humidity36%
Visibility—
Dew point22°
Mon, 2663° / 42°0
63 °
Thunder Butte, Monday, 26 October
Clear. High 63°, low 42°.
Pressure30.06 inHg
Wind8.7 mph S
Humidity28%
Visibility—
Dew point23°
Tue, 2765° / 46°0
65 °
Thunder Butte, Tuesday, 27 October
Overcast. High 65°, low 46°.
Pressure29.74 inHg
Wind11.7 mph SE
Humidity59%
Visibility—
Dew point44°
Wed, 2867° / 50°0
67 °
Thunder Butte, Wednesday, 28 October
Overcast. High 67°, low 50°.
Pressure29.59 inHg
Wind8.2 mph W
Humidity26%
Visibility—
Dew point26°
Thu, 2958° / 48°0
58 °
Thunder Butte, Thursday, 29 October
Partly cloudy. High 58°, low 48°.
Pressure29.80 inHg
Wind24.2 mph NW
Humidity25%
Visibility—
Dew point21°
Fri, 3066° / 45°0
66 °
Thunder Butte, Friday, 30 October
Clear. High 66°, low 45°.
Pressure29.68 inHg
Wind14.4 mph S
Humidity36%
Visibility—
Dew point30°
Sat, 3157° / 44°0.06
57 °
Thunder Butte, Saturday, 31 October
Light rain. High 57°, low 44°.
Pressure29.44 inHg
Wind22.7 mph NW
Humidity41%
Visibility—
Dew point33°
Sun, 0165° / 41°0
65 °
Thunder Butte, Sunday, 1 November
Clear. High 65°, low 41°.
Pressure29.68 inHg
Wind15.6 mph W
Humidity28%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0250° / 32°0.02
50 °
Thunder Butte, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.02 in
Chance of precipitation15%
Record high77° (2022)
Record low1° (1991)
Tue, 0349° / 33°0.02
49 °
Thunder Butte, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.02 in
Chance of precipitation20%
Record high69° (2020)
Record low-4° (1991)
Wed, 0451° / 31°0.01
51 °
Thunder Butte, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.01 in
Chance of precipitation12%
Record high76° (1978)
Record low-7° (1991)
Thu, 0549° / 31°0.04
49 °
Thunder Butte, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high71° (2020)
Record low2° (2003)
Fri, 0649° / 30°0.02
49 °
Thunder Butte, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation8%
Record high71° (2016)
Record low4° (1991)
Sat, 0748° / 30°0.04
48 °
Thunder Butte, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.04 in
Chance of precipitation15%
Record high71° (2006)
Record low-8° (1991)
Sun, 0847° / 30°0.04
47 °
Thunder Butte, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation15%
Record high75° (1999)
Record low4° (2000)
Mon, 0944° / 28°0.04
44 °
Thunder Butte, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.04 in
Chance of precipitation18%
Record high69° (2001)
Record low2° (2000)
Tue, 1043° / 26°0.06
43 °
Thunder Butte, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2007)
Record low-5° (1986)
Wed, 1141° / 25°0.01
41 °
Thunder Butte, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.01 in
Chance of precipitation8%
Record high68° (2005)
Record low-11° (1986)
Thu, 1243° / 26°0.02
43 °
Thunder Butte, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high71° (1999)
Record low-7° (1986)
Fri, 1345° / 28°0.02
45 °
Thunder Butte, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high69° (1990)
Record low-18° (1986)
Sat, 1444° / 28°0.02
44 °
Thunder Butte, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.02 in
Chance of precipitation12%
Record high70° (1990)
Record low-9° (2014)
Sun, 1543° / 27°0.02
43 °
Thunder Butte, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.02 in
Chance of precipitation10%
Record high66° (2001)
Record low0° (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 Thunder Butte, 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 Thunder Butte, 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.