Monthly outlook for South Park, CA: average high 81.2°, average low 73.2°. That is 1.9° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (87.5°), the coolest 10 August (68.5°).
81.2°/73.2°
Average high / low
+1.9°
Above normal
1 / 0
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.1°
77.8°
+1.3°
19 August – 28 August
83.1°
78.4°
+2.6°
29 August – 7 September
at normal
79.3°
—
August records over 66 years
91.9°27 August 2009All-time high
56.5°28 August 1973All-time low
Climate normals and records are computed from the nearest reference point — National City (4 mi).
Mon, 1086° / 69°0
86 °
South Park, Monday, 10 August
Clear. High 86°, low 69°.
Pressure29.91 inHg
Wind8.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point64°
Tue, 1180° / 73°0
80 °
South Park, Tuesday, 11 August
Mostly clear. High 80°, low 73°.
Pressure29.97 inHg
Wind8.4 mph W
Humidity55%
Visibility6.2 mi
Dew point62°
Wed, 1278° / 72°0
78 °
South Park, Wednesday, 12 August
Clear. High 78°, low 72°.
Pressure29.91 inHg
Wind9 mph SW
Humidity56%
Visibility6.2 mi
Dew point61°
Thu, 1375° / 71°0
75 °
South Park, Thursday, 13 August
Overcast. High 75°, low 71°.
Pressure29.91 inHg
Wind9.4 mph W
Humidity66%
Visibility—
Dew point62°
Fri, 1475° / 70°0
75 °
South Park, Friday, 14 August
Overcast. High 75°, low 70°.
Pressure29.94 inHg
Wind8.9 mph W
Humidity64%
Visibility—
Dew point60°
Sat, 1578° / 71°0
78 °
South Park, Saturday, 15 August
Overcast. High 78°, low 71°.
Pressure30.03 inHg
Wind10.3 mph W
Humidity64%
Visibility—
Dew point62°
Sun, 1679° / 73°0
79 °
South Park, Sunday, 16 August
Overcast. High 79°, low 73°.
Pressure30.06 inHg
Wind10.8 mph W
Humidity57%
Visibility—
Dew point61°
Mon, 1780° / 74°0
80 °
South Park, Monday, 17 August
Mostly clear. High 80°, low 74°.
Pressure30.00 inHg
Wind11.7 mph NW
Humidity57%
Visibility—
Dew point62°
Tue, 1882° / 74°0.02
82 °
South Park, Tuesday, 18 August
Light rain. High 82°, low 74°.
Pressure29.94 inHg
Wind9.6 mph NW
Humidity58%
Visibility—
Dew point63°
Wed, 1982° / 75°0
82 °
South Park, Wednesday, 19 August
Clear. High 82°, low 75°.
Pressure29.88 inHg
Wind10.7 mph SW
Humidity55%
Visibility—
Dew point63°
Thu, 2085° / 74°0.05
85 °
South Park, Thursday, 20 August
Light rain. High 85°, low 74°.
Pressure29.88 inHg
Wind8.7 mph SW
Humidity66%
Visibility—
Dew point66°
Fri, 2183° / 77°0
83 °
South Park, Friday, 21 August
Partly cloudy. High 83°, low 77°.
Pressure29.85 inHg
Wind8.6 mph SW
Humidity53%
Visibility—
Dew point64°
Sat, 2282° / 76°0
82 °
South Park, Saturday, 22 August
Overcast. High 82°, low 76°.
Pressure29.88 inHg
Wind8.5 mph SW
Humidity57%
Visibility—
Dew point64°
Sun, 2382° / 75°0
82 °
South Park, Sunday, 23 August
Clear. High 82°, low 75°.
Pressure29.91 inHg
Wind9.4 mph W
Humidity58%
Visibility—
Dew point64°
Mon, 2485° / 76°0
85 °
South Park, Monday, 24 August
Clear. High 85°, low 76°.
Pressure29.88 inHg
Wind8.5 mph SW
Humidity58%
Visibility—
Dew point65°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 65°0.01
79 °
South Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.01 in
Chance of precipitation7%
Record high90° (1985)
Record low58° (1987)
Wed, 2679° / 65°0
79 °
South Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high90° (1981)
Record low58° (1987)
Thu, 2780° / 66°0
80 °
South Park, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high92° (2009)
Record low59° (1960)
Fri, 2880° / 66°0.01
80 °
South Park, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.01 in
Chance of precipitation2%
Record high91° (2015)
Record low56° (1973)
Sat, 2980° / 66°0
80 °
South Park, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high90° (2009)
Record low58° (2010)
Sun, 3079° / 66°0
79 °
South Park, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high92° (1967)
Record low59° (1964)
Mon, 3179° / 65°0
79 °
South Park, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high89° (1998)
Record low58° (2010)
Tue, 0179° / 65°0.01
79 °
South Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.01 in
Chance of precipitation3%
Record high91° (1987)
Record low59° (1973)
Wed, 0279° / 66°0
79 °
South Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high88° (1982)
Record low59° (1973)
Thu, 0379° / 66°0.01
79 °
South Park, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high102° (1988)
Record low58° (1973)
Fri, 0480° / 66°0
80 °
South Park, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high103° (1988)
Record low58° (1970)
Sat, 0580° / 66°0
80 °
South Park, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high99° (1988)
Record low58° (1999)
Sun, 0680° / 66°0
80 °
South Park, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0 in
Chance of precipitation7%
Record high92° (2011)
Record low57° (1973)
Mon, 0780° / 66°0.01
80 °
South Park, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high89° (2024)
Record low57° (1964)
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 South Park, CA 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 South Park, CA 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.