Monthly outlook for Lake City, SD: average high 82.6°, average low 61.2°. That is 2.9° above the climate normal for August. Precipitation is expected on 9 days (about 1.9 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 19 August (98.6°), the coolest 9 August (56.4°).
82.6°/61.2°
Average high / low
+2.9°
Above normal
9 / 4
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.5°
77.4°
+3.9°
19 August – 28 August
79.5°
77.1°
+1.4°
29 August – 7 September
at normal
75.1°
—
August records over 66 years
97°18 August 1976All-time high
43.5°28 August 1965All-time low
Mon, 1090° / 57°0.07
90 °
Lake City, Monday, 10 August
Rain. High 90°, low 57°.
Pressure29.85 inHg
Wind9.9 mph SE
Humidity21%
Visibility6.2 mi
Dew point43°
Tue, 1188° / 61°0.05
88 °
Lake City, Tuesday, 11 August
Rain. High 88°, low 61°.
Pressure29.88 inHg
Wind9.1 mph NE
Humidity45%
Visibility6.2 mi
Dew point58°
Wed, 1287° / 63°0
87 °
Lake City, Wednesday, 12 August
Partly cloudy. High 87°, low 63°.
Pressure29.94 inHg
Wind7.8 mph E
Humidity26%
Visibility6.2 mi
Dew point41°
Thu, 1379° / 58°0
79 °
Lake City, Thursday, 13 August
Overcast. High 79°, low 58°.
Pressure30.06 inHg
Wind13 mph E
Humidity34%
Visibility—
Dew point42°
Fri, 1483° / 58°0
83 °
Lake City, Friday, 14 August
Overcast. High 83°, low 58°.
Pressure30.09 inHg
Wind14.7 mph SE
Humidity28%
Visibility—
Dew point42°
Sat, 1569° / 61°0.06
69 °
Lake City, Saturday, 15 August
Light rain. High 69°, low 61°.
Pressure30.12 inHg
Wind10.7 mph S
Humidity89%
Visibility—
Dew point59°
Sun, 1685° / 59°0
85 °
Lake City, Sunday, 16 August
Overcast. High 85°, low 59°.
Pressure30.15 inHg
Wind9.7 mph N
Humidity35%
Visibility—
Dew point48°
Mon, 1786° / 65°0.32
86 °
Lake City, Monday, 17 August
Rain. High 86°, low 65°.
Pressure29.97 inHg
Wind16.3 mph SE
Humidity42%
Visibility—
Dew point55°
Tue, 1894° / 66°0.26
94 °
Lake City, Tuesday, 18 August
Rain. High 94°, low 66°.
Pressure29.74 inHg
Wind13.1 mph S
Humidity43%
Visibility—
Dew point62°
Wed, 1999° / 65°0.61
99 °
Lake City, Wednesday, 19 August
Heavy rain. High 99°, low 65°.
Pressure29.77 inHg
Wind20.9 mph SE
Humidity36%
Visibility—
Dew point61°
Thu, 2084° / 65°0
84 °
Lake City, Thursday, 20 August
Overcast. High 84°, low 65°.
Pressure29.97 inHg
Wind12.4 mph N
Humidity50%
Visibility—
Dew point51°
Fri, 2178° / 63°0.03
78 °
Lake City, Friday, 21 August
Light rain. High 78°, low 63°.
Pressure29.97 inHg
Wind13.9 mph SE
Humidity51%
Visibility—
Dew point52°
Sat, 2280° / 64°0.31
80 °
Lake City, Saturday, 22 August
Rain. High 80°, low 64°.
Pressure29.77 inHg
Wind16.6 mph NE
Humidity63%
Visibility—
Dew point64°
Sun, 2367° / 60°0.11
67 °
Lake City, Sunday, 23 August
Light rain. High 67°, low 60°.
Pressure29.97 inHg
Wind12.7 mph NE
Humidity95%
Visibility—
Dew point62°
Mon, 2470° / 58°0.07
70 °
Lake City, Monday, 24 August
Light rain. High 70°, low 58°.
Pressure30.06 inHg
Wind12.7 mph E
Humidity85%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 62°0.05
77 °
Lake City, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.05 in
Chance of precipitation25%
Record high92° (2013)
Record low46° (1968)
Wed, 2677° / 61°0.12
77 °
Lake City, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.12 in
Chance of precipitation27%
Record high95° (1976)
Record low50° (1992)
Thu, 2777° / 60°0.05
77 °
Lake City, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.05 in
Chance of precipitation18%
Record high92° (1973)
Record low46° (1986)
Fri, 2877° / 61°0.06
77 °
Lake City, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.06 in
Chance of precipitation25%
Record high94° (1984)
Record low44° (1965)
Sat, 2977° / 61°0.07
77 °
Lake City, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high93° (2012)
Record low49° (2018)
Sun, 3076° / 60°0.08
76 °
Lake City, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation25%
Record high89° (1961)
Record low51° (2003)
Mon, 3176° / 61°0.08
76 °
Lake City, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.08 in
Chance of precipitation32%
Record high88° (1979)
Record low46° (1987)
Tue, 0175° / 60°0.08
75 °
Lake City, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.08 in
Chance of precipitation28%
Record high90° (1983)
Record low44° (1965)
Wed, 0275° / 60°0.15
75 °
Lake City, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.15 in
Chance of precipitation28%
Record high95° (1983)
Record low42° (1974)
Thu, 0376° / 59°0.05
76 °
Lake City, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.05 in
Chance of precipitation25%
Record high91° (2007)
Record low41° (1974)
Fri, 0475° / 59°0.09
75 °
Lake City, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.09 in
Chance of precipitation18%
Record high92° (1979)
Record low45° (1962)
Sat, 0574° / 59°0.11
74 °
Lake City, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.11 in
Chance of precipitation30%
Record high93° (1978)
Record low38° (1965)
Sun, 0674° / 57°0.07
74 °
Lake City, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (1976)
Record low44° (1968)
Mon, 0773° / 56°0.07
73 °
Lake City, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (1978)
Record low42° (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 Lake City, 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 Lake City, 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.