Monthly outlook for Lower Brule, SD: average high 63.8°, average low 46.1°. That is 2.4° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 19 October (76.6°), the coolest 17 October (27.3°).
63.8°/46.1°
Average high / low
+2.4°
Above normal
2 / 3
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
63°
60.6°
+1.3°
21 October – 30 October
65.1°
56.2°
+4.9°
31 October – 9 November
at normal
50.2°
—
October records over 66 years
92.1°4 October 1975All-time high
5.2°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Fort Thompson (9 mi).
Mon, 1264° / 48°0.36
64 °
Lower Brule, Monday, 12 October
Heavy rain. High 64°, low 48°.
Pressure29.77 inHg
Wind9.6 mph NW
Humidity77%
Visibility6.2 mi
Dew point52°
Tue, 1357° / 48°0
57 °
Lower Brule, Tuesday, 13 October
Overcast. High 57°, low 48°.
Pressure30.06 inHg
Wind6.1 mph N
Humidity65%
Visibility6.2 mi
Dew point40°
Wed, 1459° / 46°0
59 °
Lower Brule, Wednesday, 14 October
Clear. High 59°, low 46°.
Pressure30.27 inHg
Wind4 mph NE
Humidity61%
Visibility6.2 mi
Dew point41°
Thu, 1555° / 51°0.19
55 °
Lower Brule, Thursday, 15 October
Light rain. High 55°, low 51°.
Pressure30.30 inHg
Wind11.2 mph NW
Humidity75%
Visibility—
Dew point46°
Fri, 1652° / 40°0
52 °
Lower Brule, Friday, 16 October
Clear. High 52°, low 40°.
Pressure30.74 inHg
Wind12.3 mph N
Humidity56%
Visibility—
Dew point33°
Sat, 1749° / 27°0
49 °
Lower Brule, Saturday, 17 October
Clear. High 49°, low 27°.
Pressure30.59 inHg
Wind17 mph SE
Humidity17%
Visibility—
Dew point-1°
Sun, 1872° / 40°0
72 °
Lower Brule, Sunday, 18 October
Overcast. High 72°, low 40°.
Pressure29.97 inHg
Wind16.8 mph SE
Humidity29%
Visibility—
Dew point27°
Mon, 1977° / 53°0
77 °
Lower Brule, Monday, 19 October
Mostly clear. High 77°, low 53°.
Pressure29.94 inHg
Wind13.2 mph SE
Humidity27%
Visibility—
Dew point34°
Tue, 2072° / 52°0
72 °
Lower Brule, Tuesday, 20 October
Partly cloudy. High 72°, low 52°.
Pressure29.74 inHg
Wind12.8 mph NW
Humidity31%
Visibility—
Dew point35°
Wed, 2168° / 53°0
68 °
Lower Brule, Wednesday, 21 October
Overcast. High 68°, low 53°.
Pressure30.09 inHg
Wind9.8 mph NW
Humidity27%
Visibility—
Dew point30°
Thu, 2268° / 43°0
68 °
Lower Brule, Thursday, 22 October
Partly cloudy. High 68°, low 43°.
Pressure30.30 inHg
Wind18.7 mph SE
Humidity37%
Visibility—
Dew point32°
Fri, 2368° / 55°0
68 °
Lower Brule, Friday, 23 October
Partly cloudy. High 68°, low 55°.
Pressure29.85 inHg
Wind27.2 mph NW
Humidity41%
Visibility—
Dew point40°
Sat, 2457° / 43°0
57 °
Lower Brule, Saturday, 24 October
Mostly clear. High 57°, low 43°.
Pressure30.39 inHg
Wind15.2 mph NW
Humidity36%
Visibility—
Dew point28°
Sun, 2568° / 37°0
68 °
Lower Brule, Sunday, 25 October
Clear. High 68°, low 37°.
Pressure30.30 inHg
Wind14.8 mph W
Humidity24%
Visibility—
Dew point21°
Mon, 2662° / 43°0
62 °
Lower Brule, Monday, 26 October
Clear. High 62°, low 43°.
Pressure30.27 inHg
Wind5.7 mph N
Humidity36%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 39°0.05
56 °
Lower Brule, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low39°
Average precipitation0.05 in
Chance of precipitation25%
Record high73° (1983)
Record low5° (2020)
Wed, 2855° / 37°0.06
55 °
Lower Brule, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low37°
Average precipitation0.06 in
Chance of precipitation15%
Record high76° (2016)
Record low20° (2017)
Thu, 2953° / 37°0.06
53 °
Lower Brule, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high74° (1978)
Record low17° (1991)
Fri, 3052° / 37°0.06
52 °
Lower Brule, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high73° (1965)
Record low13° (1991)
Sat, 3153° / 35°0.04
53 °
Lower Brule, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low35°
Average precipitation0.04 in
Chance of precipitation13%
Record high82° (2016)
Record low11° (2002)
Sun, 0151° / 36°0.04
51 °
Lower Brule, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.04 in
Chance of precipitation18%
Record high76° (1990)
Record low15° (2002)
Mon, 0251° / 35°0.03
51 °
Lower Brule, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.03 in
Chance of precipitation12%
Record high73° (1964)
Record low11° (1991)
Tue, 0350° / 35°0.03
50 °
Lower Brule, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.03 in
Chance of precipitation13%
Record high72° (1978)
Record low8° (1991)
Wed, 0451° / 33°0.01
51 °
Lower Brule, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.01 in
Chance of precipitation8%
Record high74° (1978)
Record low5° (1995)
Thu, 0551° / 34°0.03
51 °
Lower Brule, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.03 in
Chance of precipitation15%
Record high74° (2001)
Record low14° (2003)
Fri, 0650° / 33°0.03
50 °
Lower Brule, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high78° (2020)
Record low4° (2003)
Sat, 0750° / 33°0.03
50 °
Lower Brule, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high72° (2006)
Record low9° (1990)
Sun, 0849° / 33°0.07
49 °
Lower Brule, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.07 in
Chance of precipitation12%
Record high76° (1999)
Record low12° (1991)
Mon, 0946° / 32°0.05
46 °
Lower Brule, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.05 in
Chance of precipitation20%
Record high68° (2016)
Record low12° (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 Lower Brule, 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 Lower Brule, 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.