Monthly outlook for Spring Valley, CA: average high 86.8°, average low 73.1°. That is 3.3° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 8 August (93.4°), the coolest 8 August (69.7°).
86.8°/73.1°
Average high / low
+3.3°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
87.8°
80.9°
+3.8°
18 August – 27 August
85.1°
81.2°
+2.2°
28 August – 6 September
at normal
82.6°
—
August records over 66 years
97.3°31 August 2017All-time high
56.5°22 August 1968All-time low
Climate normals and records are computed from the nearest reference point — La Presa (2 mi).
Sun, 0989° / 70°0.01
89 °
Spring Valley, Sunday, 9 August
Light rain. High 89°, low 70°.
Pressure29.83 inHg
Wind8.5 mph W
Humidity41%
Visibility6.2 mi
Dew point61°
Mon, 1086° / 70°0
86 °
Spring Valley, Monday, 10 August
Clear. High 86°, low 70°.
Pressure29.91 inHg
Wind8.7 mph SW
Humidity45%
Visibility6.2 mi
Dew point61°
Tue, 1188° / 74°0
88 °
Spring Valley, Tuesday, 11 August
Light rain. High 88°, low 74°.
Pressure29.94 inHg
Wind8 mph W
Humidity40%
Visibility6.2 mi
Dew point58°
Wed, 1286° / 75°0
86 °
Spring Valley, Wednesday, 12 August
Overcast. High 86°, low 75°.
Pressure29.88 inHg
Wind7.9 mph SW
Humidity41%
Visibility6.2 mi
Dew point58°
Thu, 1385° / 72°0
85 °
Spring Valley, Thursday, 13 August
Partly cloudy. High 85°, low 72°.
Pressure29.91 inHg
Wind9.5 mph W
Humidity51%
Visibility—
Dew point59°
Fri, 1484° / 72°0
84 °
Spring Valley, Friday, 14 August
Overcast. High 84°, low 72°.
Pressure29.94 inHg
Wind8.9 mph W
Humidity48%
Visibility—
Dew point58°
Sat, 1588° / 73°0
88 °
Spring Valley, Saturday, 15 August
Partly cloudy. High 88°, low 73°.
Pressure29.97 inHg
Wind9.5 mph W
Humidity42%
Visibility—
Dew point57°
Sun, 1689° / 75°0
89 °
Spring Valley, Sunday, 16 August
Overcast. High 89°, low 75°.
Pressure30.00 inHg
Wind10.4 mph W
Humidity42%
Visibility—
Dew point57°
Mon, 1790° / 75°0
90 °
Spring Valley, Monday, 17 August
Clear. High 90°, low 75°.
Pressure30.00 inHg
Wind9.6 mph W
Humidity36%
Visibility—
Dew point55°
Tue, 1890° / 76°0
90 °
Spring Valley, Tuesday, 18 August
Clear. High 90°, low 76°.
Pressure29.94 inHg
Wind8.4 mph W
Humidity38%
Visibility—
Dew point56°
Wed, 1987° / 76°0
87 °
Spring Valley, Wednesday, 19 August
Overcast. High 87°, low 76°.
Pressure29.91 inHg
Wind9.8 mph SW
Humidity44%
Visibility—
Dew point59°
Thu, 2085° / 74°0
85 °
Spring Valley, Thursday, 20 August
Overcast. High 85°, low 74°.
Pressure29.91 inHg
Wind9.1 mph SW
Humidity52%
Visibility—
Dew point62°
Fri, 2184° / 73°0
84 °
Spring Valley, Friday, 21 August
Overcast. High 84°, low 73°.
Pressure29.88 inHg
Wind8.4 mph W
Humidity55%
Visibility—
Dew point62°
Sat, 2281° / 72°0.01
81 °
Spring Valley, Saturday, 22 August
Light rain. High 81°, low 72°.
Pressure29.88 inHg
Wind8.6 mph SW
Humidity59%
Visibility—
Dew point63°
Sun, 2383° / 72°0
83 °
Spring Valley, Sunday, 23 August
Clear. High 83°, low 72°.
Pressure29.91 inHg
Wind9.6 mph W
Humidity58%
Visibility—
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0
82 °
Spring Valley, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high90° (1985)
Record low59° (1978)
Tue, 2582° / 66°0.01
82 °
Spring Valley, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.01 in
Chance of precipitation7%
Record high94° (1985)
Record low58° (2024)
Wed, 2682° / 66°0
82 °
Spring Valley, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high93° (2021)
Record low58° (1987)
Thu, 2783° / 66°0
83 °
Spring Valley, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high95° (2009)
Record low58° (1989)
Fri, 2883° / 66°0.01
83 °
Spring Valley, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.01 in
Chance of precipitation2%
Record high95° (2023)
Record low57° (1973)
Sat, 2983° / 67°0
83 °
Spring Valley, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0 in
Chance of precipitation3%
Record high95° (2023)
Record low58° (2010)
Sun, 3082° / 67°0
82 °
Spring Valley, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0 in
Chance of precipitation3%
Record high95° (1967)
Record low59° (2010)
Mon, 3182° / 66°0
82 °
Spring Valley, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high97° (2017)
Record low58° (1973)
Tue, 0182° / 65°0
82 °
Spring Valley, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high95° (2017)
Record low58° (1964)
Wed, 0282° / 66°0
82 °
Spring Valley, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high94° (2017)
Record low59° (1999)
Thu, 0382° / 66°0
82 °
Spring Valley, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high103° (1988)
Record low58° (1973)
Fri, 0483° / 66°0
83 °
Spring Valley, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high102° (1988)
Record low58° (1999)
Sat, 0583° / 66°0
83 °
Spring Valley, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2020)
Record low58° (1973)
Sun, 0683° / 66°0
83 °
Spring Valley, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0 in
Chance of precipitation7%
Record high99° (2020)
Record low58° (1973)
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 Spring Valley, 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 Spring Valley, 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.