Monthly outlook for West Brule, SD: average high 87°, average low 64°. That is 1.3° above the climate normal for August. Precipitation is expected on 7 days (about 2.4 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 10 August (101°), the coolest 21 August (57.8°).
87°/64°
Average high / low
+1.3°
Above normal
7 / 4
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
89°
84.7°
+2.4°
19 August – 28 August
83.5°
84.6°
-0.6°
29 August – 7 September
at normal
82.5°
—
August records over 66 years
107.6°13 August 1965All-time high
47.5°23 August 1966All-time low
Climate normals and records are computed from the nearest reference point — Fort Thompson (11 mi).
Mon, 10101° / 65°0.45
101 °
West Brule, Monday, 10 August
Rain. High 101°, low 65°.
Pressure29.80 inHg
Wind6.8 mph E
Humidity43%
Visibility6.2 mi
Dew point61°
Tue, 1192° / 67°0.01
92 °
West Brule, Tuesday, 11 August
Light rain. High 92°, low 67°.
Pressure29.85 inHg
Wind10.7 mph NE
Humidity48%
Visibility6.2 mi
Dew point62°
Wed, 1293° / 67°0.03
93 °
West Brule, Wednesday, 12 August
Light rain. High 93°, low 67°.
Pressure29.88 inHg
Wind4.5 mph E
Humidity46%
Visibility6.2 mi
Dew point61°
Thu, 1377° / 64°1
77 °
West Brule, Thursday, 13 August
Heavy rain. High 77°, low 64°.
Pressure30.00 inHg
Wind14.9 mph E
Humidity76%
Visibility—
Dew point62°
Fri, 1481° / 61°0
81 °
West Brule, Friday, 14 August
Overcast. High 81°, low 61°.
Pressure30.06 inHg
Wind16.7 mph S
Humidity47%
Visibility—
Dew point54°
Sat, 1581° / 66°0
81 °
West Brule, Saturday, 15 August
Overcast. High 81°, low 66°.
Pressure30.09 inHg
Wind12.8 mph S
Humidity69%
Visibility—
Dew point62°
Sun, 1685° / 66°0.06
85 °
West Brule, Sunday, 16 August
Light rain. High 85°, low 66°.
Pressure30.03 inHg
Wind9.5 mph SE
Humidity53%
Visibility—
Dew point62°
Mon, 1793° / 65°0.14
93 °
West Brule, Monday, 17 August
Light rain. High 93°, low 65°.
Pressure29.94 inHg
Wind11.5 mph SW
Humidity58%
Visibility—
Dew point66°
Tue, 1895° / 69°0.01
95 °
West Brule, Tuesday, 18 August
Light rain. High 95°, low 69°.
Pressure29.94 inHg
Wind14.8 mph NE
Humidity27%
Visibility—
Dew point49°
Wed, 1980° / 62°0.04
80 °
West Brule, Wednesday, 19 August
Light rain. High 80°, low 62°.
Pressure30.12 inHg
Wind18.8 mph NE
Humidity38%
Visibility—
Dew point46°
Thu, 2070° / 60°0.13
70 °
West Brule, Thursday, 20 August
Rain. High 70°, low 60°.
Pressure30.09 inHg
Wind15.4 mph SE
Humidity78%
Visibility—
Dew point58°
Fri, 2186° / 58°0.52
86 °
West Brule, Friday, 21 August
Rain. High 86°, low 58°.
Pressure29.80 inHg
Wind21.9 mph S
Humidity41%
Visibility—
Dew point53°
Sat, 2285° / 64°0
85 °
West Brule, Saturday, 22 August
Clear. High 85°, low 64°.
Pressure29.80 inHg
Wind16 mph NW
Humidity39%
Visibility—
Dew point53°
Sun, 2386° / 61°0
86 °
West Brule, Sunday, 23 August
Partly cloudy. High 86°, low 61°.
Pressure29.94 inHg
Wind9.4 mph SE
Humidity26%
Visibility—
Dew point40°
Mon, 2494° / 65°0
94 °
West Brule, Monday, 24 August
Mostly clear. High 94°, low 65°.
Pressure29.71 inHg
Wind13.4 mph SE
Humidity28%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 65°0.04
85 °
West Brule, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low65°
Average precipitation0.04 in
Chance of precipitation13%
Record high102° (1991)
Record low50° (1964)
Wed, 2685° / 65°0.04
85 °
West Brule, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low65°
Average precipitation0.04 in
Chance of precipitation20%
Record high103° (1991)
Record low50° (1992)
Thu, 2784° / 65°0.04
84 °
West Brule, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.04 in
Chance of precipitation22%
Record high101° (1962)
Record low48° (1992)
Fri, 2884° / 65°0.07
84 °
West Brule, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.07 in
Chance of precipitation18%
Record high99° (1991)
Record low49° (1986)
Sat, 2984° / 65°0.03
84 °
West Brule, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.03 in
Chance of precipitation13%
Record high106° (2012)
Record low53° (1988)
Sun, 3084° / 64°0.1
84 °
West Brule, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low64°
Average precipitation0.1 in
Chance of precipitation20%
Record high98° (1961)
Record low52° (1992)
Mon, 3183° / 65°0.03
83 °
West Brule, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.03 in
Chance of precipitation17%
Record high96° (1979)
Record low51° (1993)
Tue, 0182° / 64°0.07
82 °
West Brule, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high100° (1983)
Record low47° (1965)
Wed, 0283° / 63°0.11
83 °
West Brule, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low63°
Average precipitation0.11 in
Chance of precipitation18%
Record high102° (1983)
Record low48° (1974)
Thu, 0383° / 63°0.05
83 °
West Brule, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low63°
Average precipitation0.05 in
Chance of precipitation23%
Record high98° (2023)
Record low43° (1974)
Fri, 0482° / 63°0.07
82 °
West Brule, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.07 in
Chance of precipitation17%
Record high99° (2023)
Record low46° (1962)
Sat, 0582° / 63°0.06
82 °
West Brule, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.06 in
Chance of precipitation18%
Record high100° (1978)
Record low45° (1965)
Sun, 0682° / 62°0.04
82 °
West Brule, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low62°
Average precipitation0.04 in
Chance of precipitation17%
Record high103° (1976)
Record low47° (2025)
Mon, 0780° / 60°0.08
80 °
West Brule, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low60°
Average precipitation0.08 in
Chance of precipitation28%
Record high97° (1980)
Record low43° (1986)
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 West 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 West 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.