Monthly outlook for Long Lake Colony, SD: average high 88.8°, average low 62.1°. That is 4.7° above the climate normal for August. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 24 August (101.6°), the coolest 10 August (54.8°).
88.8°/62.1°
Average high / low
+4.7°
Above normal
6 / 4
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.2°
80.4°
+3.2°
19 August – 28 August
93°
80.1°
+7.2°
29 August – 7 September
at normal
77.9°
—
August records over 66 years
104.4°13 August 1965All-time high
43.5°31 August 1992All-time low
Climate normals and records are computed from the nearest reference point — Leola (10 mi).
Mon, 1091° / 55°0.17
91 °
Long Lake Colony, Monday, 10 August
Heavy rain. High 91°, low 55°.
Pressure29.85 inHg
Wind4.7 mph SE
Humidity30%
Visibility6.2 mi
Dew point53°
Tue, 1192° / 63°0.73
92 °
Long Lake Colony, Tuesday, 11 August
Heavy rain. High 92°, low 63°.
Pressure29.85 inHg
Wind7.9 mph NE
Humidity46%
Visibility6.2 mi
Dew point58°
Wed, 1289° / 63°0.02
89 °
Long Lake Colony, Wednesday, 12 August
Light rain. High 89°, low 63°.
Pressure29.88 inHg
Wind8.1 mph E
Humidity32%
Visibility6.2 mi
Dew point49°
Thu, 1386° / 62°0.02
86 °
Long Lake Colony, Thursday, 13 August
Light rain. High 86°, low 62°.
Pressure29.94 inHg
Wind12.2 mph E
Humidity34%
Visibility—
Dew point48°
Fri, 1479° / 61°0.05
79 °
Long Lake Colony, Friday, 14 August
Light rain. High 79°, low 61°.
Pressure30.06 inHg
Wind12.9 mph SE
Humidity40%
Visibility—
Dew point50°
Sat, 1574° / 62°0.07
74 °
Long Lake Colony, Saturday, 15 August
Light rain. High 74°, low 62°.
Pressure30.06 inHg
Wind10.6 mph SE
Humidity89%
Visibility—
Dew point63°
Sun, 1686° / 60°0
86 °
Long Lake Colony, Sunday, 16 August
Overcast. High 86°, low 60°.
Pressure30.15 inHg
Wind7.7 mph S
Humidity37%
Visibility—
Dew point51°
Mon, 1791° / 66°0.23
91 °
Long Lake Colony, Monday, 17 August
Rain. High 91°, low 66°.
Pressure29.88 inHg
Wind16.8 mph S
Humidity45%
Visibility—
Dew point60°
Tue, 1893° / 65°0.01
93 °
Long Lake Colony, Tuesday, 18 August
Light rain. High 93°, low 65°.
Pressure29.71 inHg
Wind18.5 mph NW
Humidity29%
Visibility—
Dew point50°
Wed, 1984° / 59°0
84 °
Long Lake Colony, Wednesday, 19 August
Clear. High 84°, low 59°.
Pressure30.00 inHg
Wind12 mph N
Humidity39%
Visibility—
Dew point49°
Thu, 2096° / 63°0
96 °
Long Lake Colony, Thursday, 20 August
Overcast. High 96°, low 63°.
Pressure29.80 inHg
Wind14.9 mph SW
Humidity33%
Visibility—
Dew point54°
Fri, 2194° / 68°0
94 °
Long Lake Colony, Friday, 21 August
Overcast. High 94°, low 68°.
Pressure29.71 inHg
Wind14.1 mph N
Humidity26%
Visibility—
Dew point48°
Sat, 2288° / 63°0
88 °
Long Lake Colony, Saturday, 22 August
Mostly clear. High 88°, low 63°.
Pressure30.00 inHg
Wind13.5 mph N
Humidity25%
Visibility—
Dew point42°
Sun, 2394° / 61°0
94 °
Long Lake Colony, Sunday, 23 August
Clear. High 94°, low 61°.
Pressure30.03 inHg
Wind10.5 mph S
Humidity24%
Visibility—
Dew point44°
Mon, 24102° / 67°0
102 °
Long Lake Colony, Monday, 24 August
Clear. High 102°, low 67°.
Pressure29.91 inHg
Wind11.4 mph S
Humidity23%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 61°0.03
80 °
Long Lake Colony, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.03 in
Chance of precipitation20%
Record high94° (1991)
Record low47° (1968)
Wed, 2680° / 60°0.06
80 °
Long Lake Colony, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low60°
Average precipitation0.06 in
Chance of precipitation22%
Record high101° (1991)
Record low47° (2014)
Thu, 2780° / 60°0.05
80 °
Long Lake Colony, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low60°
Average precipitation0.05 in
Chance of precipitation28%
Record high98° (1991)
Record low45° (1992)
Fri, 2880° / 61°0.09
80 °
Long Lake Colony, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.09 in
Chance of precipitation32%
Record high98° (1991)
Record low44° (1965)
Sat, 2980° / 61°0.04
80 °
Long Lake Colony, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.04 in
Chance of precipitation18%
Record high98° (1961)
Record low47° (2018)
Sun, 3079° / 59°0.1
79 °
Long Lake Colony, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low59°
Average precipitation0.1 in
Chance of precipitation23%
Record high96° (1961)
Record low47° (2009)
Mon, 3179° / 60°0.05
79 °
Long Lake Colony, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.05 in
Chance of precipitation18%
Record high93° (1979)
Record low44° (1992)
Tue, 0178° / 59°0.07
78 °
Long Lake Colony, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low59°
Average precipitation0.07 in
Chance of precipitation22%
Record high97° (1983)
Record low43° (1965)
Wed, 0278° / 59°0.11
78 °
Long Lake Colony, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low59°
Average precipitation0.11 in
Chance of precipitation25%
Record high101° (1983)
Record low44° (1974)
Thu, 0378° / 58°0.07
78 °
Long Lake Colony, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0.07 in
Chance of precipitation20%
Record high95° (1978)
Record low40° (1974)
Fri, 0478° / 59°0.08
78 °
Long Lake Colony, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low59°
Average precipitation0.08 in
Chance of precipitation17%
Record high98° (1979)
Record low43° (1962)
Sat, 0577° / 58°0.06
77 °
Long Lake Colony, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low58°
Average precipitation0.06 in
Chance of precipitation20%
Record high101° (1978)
Record low38° (1965)
Sun, 0677° / 57°0.06
77 °
Long Lake Colony, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low57°
Average precipitation0.06 in
Chance of precipitation20%
Record high98° (1978)
Record low43° (1968)
Mon, 0776° / 56°0.08
76 °
Long Lake Colony, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low56°
Average precipitation0.08 in
Chance of precipitation25%
Record high97° (1978)
Record low41° (2025)
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 Long Lake Colony, 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 Long Lake Colony, 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.