Monthly outlook for Lake Murray of Richland, SC: average high 99.1°, average low 74.5°. That is 6.5° above the climate normal for August. Precipitation is expected on 13 days (about 2.5 inches), against a normal of 7 days and 2.1 inches. The warmest day looks like 17 August (106.1°), the coolest 9 August (72°).
99.1°/74.5°
Average high / low
+6.5°
Above normal
13 / 7
Wet days / normal
2.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
99.6°
87.3°
+6.9°
19 August – 28 August
98.3°
87.2°
+6.2°
29 August – 7 September
at normal
85.1°
—
August records over 66 years
103.6°10 August 2007All-time high
60.4°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Irmo (4 mi).
Mon, 1093° / 72°0.13
93 °
Lake Murray of Richland, Monday, 10 August
Rain. High 93°, low 72°.
Pressure30.09 inHg
Wind7.5 mph W
Humidity53%
Visibility6.2 mi
Dew point71°
Tue, 11101° / 76°0
101 °
Lake Murray of Richland, Tuesday, 11 August
Clear. High 101°, low 76°.
Pressure30.03 inHg
Wind3.7 mph W
Humidity40%
Visibility6.2 mi
Dew point67°
Wed, 12102° / 76°0.08
102 °
Lake Murray of Richland, Wednesday, 12 August
Light rain. High 102°, low 76°.
Pressure29.91 inHg
Wind9.9 mph W
Humidity39%
Visibility6.2 mi
Dew point66°
Thu, 13101° / 73°0.18
101 °
Lake Murray of Richland, Thursday, 13 August
Rain. High 101°, low 73°.
Pressure29.94 inHg
Wind5.3 mph W
Humidity38%
Visibility6.2 mi
Dew point68°
Fri, 14100° / 73°0.1
100 °
Lake Murray of Richland, Friday, 14 August
Light rain. High 100°, low 73°.
Pressure30.03 inHg
Wind8.1 mph N
Humidity37%
Visibility—
Dew point65°
Sat, 15100° / 75°0.27
100 °
Lake Murray of Richland, Saturday, 15 August
Rain. High 100°, low 75°.
Pressure30.12 inHg
Wind6.3 mph SE
Humidity41%
Visibility—
Dew point69°
Sun, 16101° / 76°0.12
101 °
Lake Murray of Richland, Sunday, 16 August
Light rain. High 101°, low 76°.
Pressure30.03 inHg
Wind8.2 mph W
Humidity39%
Visibility—
Dew point67°
Mon, 17106° / 79°0.01
106 °
Lake Murray of Richland, Monday, 17 August
Light rain. High 106°, low 79°.
Pressure29.94 inHg
Wind11.8 mph NW
Humidity25%
Visibility—
Dew point59°
Tue, 18102° / 79°0
102 °
Lake Murray of Richland, Tuesday, 18 August
Light rain. High 102°, low 79°.
Pressure30.00 inHg
Wind9.1 mph E
Humidity37%
Visibility—
Dew point67°
Wed, 19102° / 75°0.21
102 °
Lake Murray of Richland, Wednesday, 19 August
Light rain. High 102°, low 75°.
Pressure30.00 inHg
Wind7 mph S
Humidity35%
Visibility—
Dew point67°
Thu, 20100° / 75°0.07
100 °
Lake Murray of Richland, Thursday, 20 August
Light rain. High 100°, low 75°.
Pressure29.97 inHg
Wind7.3 mph SW
Humidity37%
Visibility—
Dew point65°
Fri, 2199° / 74°0.34
99 °
Lake Murray of Richland, Friday, 21 August
Rain. High 99°, low 74°.
Pressure29.88 inHg
Wind15 mph N
Humidity36%
Visibility—
Dew point64°
Sat, 2298° / 74°0.62
98 °
Lake Murray of Richland, Saturday, 22 August
Rain. High 98°, low 74°.
Pressure29.88 inHg
Wind14.8 mph NW
Humidity39%
Visibility—
Dew point65°
Sun, 2396° / 73°0.19
96 °
Lake Murray of Richland, Sunday, 23 August
Light rain. High 96°, low 73°.
Pressure29.97 inHg
Wind13.7 mph NW
Humidity47%
Visibility—
Dew point68°
Mon, 2494° / 73°0.11
94 °
Lake Murray of Richland, Monday, 24 August
Light rain. High 94°, low 73°.
Pressure30.03 inHg
Wind10.9 mph SW
Humidity43%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 71°0.12
86 °
Lake Murray of Richland, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low71°
Average precipitation0.12 in
Chance of precipitation45%
Record high96° (1975)
Record low62° (1969)
Wed, 2687° / 71°0.12
87 °
Lake Murray of Richland, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.12 in
Chance of precipitation28%
Record high99° (2023)
Record low61° (2013)
Thu, 2787° / 71°0.1
87 °
Lake Murray of Richland, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.1 in
Chance of precipitation37%
Record high96° (1975)
Record low62° (1981)
Fri, 2887° / 71°0.14
87 °
Lake Murray of Richland, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.14 in
Chance of precipitation27%
Record high95° (1990)
Record low63° (1969)
Sat, 2987° / 71°0.06
87 °
Lake Murray of Richland, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.06 in
Chance of precipitation28%
Record high96° (1990)
Record low61° (1986)
Sun, 3086° / 71°0.17
86 °
Lake Murray of Richland, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low71°
Average precipitation0.17 in
Chance of precipitation47%
Record high94° (1998)
Record low60° (1965)
Mon, 3185° / 71°0.13
85 °
Lake Murray of Richland, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low71°
Average precipitation0.13 in
Chance of precipitation52%
Record high96° (1993)
Record low61° (1986)
Tue, 0185° / 71°0.07
85 °
Lake Murray of Richland, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low71°
Average precipitation0.07 in
Chance of precipitation40%
Record high96° (1993)
Record low59° (1999)
Wed, 0285° / 70°0.14
85 °
Lake Murray of Richland, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low70°
Average precipitation0.14 in
Chance of precipitation37%
Record high95° (2014)
Record low59° (1967)
Thu, 0386° / 70°0.15
86 °
Lake Murray of Richland, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high86°
Average low70°
Average precipitation0.15 in
Chance of precipitation38%
Record high96° (1980)
Record low58° (1967)
Fri, 0485° / 70°0.15
85 °
Lake Murray of Richland, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low70°
Average precipitation0.15 in
Chance of precipitation37%
Record high96° (2020)
Record low61° (1994)
Sat, 0584° / 69°0.18
84 °
Lake Murray of Richland, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.18 in
Chance of precipitation42%
Record high94° (1975)
Record low55° (1997)
Sun, 0685° / 69°0.13
85 °
Lake Murray of Richland, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.13 in
Chance of precipitation28%
Record high95° (2019)
Record low59° (1997)
Mon, 0784° / 69°0.08
84 °
Lake Murray of Richland, Monday, 7 September
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.08 in
Chance of precipitation32%
Record high96° (1990)
Record low59° (1984)
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 Murray of Richland, SC 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 Murray of Richland, SC 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.