Monthly outlook for South El Monte, CA: average high 95.1°, average low 76.1°. That is 3.7° 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 24 August (104.8°), the coolest 14 August (68.6°).
95.1°/76.1°
Average high / low
+3.7°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
91.7°
88.6°
+1.7°
19 August – 28 August
100.7°
89°
+6.5°
29 August – 7 September
at normal
90.2°
—
August records over 66 years
106.7°18 August 2020All-time high
53.4°22 August 1968All-time low
Mon, 1097° / 71°0
97 °
South El Monte, Monday, 10 August
Partly cloudy. High 97°, low 71°.
Pressure29.91 inHg
Wind7.1 mph SW
Humidity31%
Visibility6.2 mi
Dew point57°
Tue, 1192° / 75°0
92 °
South El Monte, Tuesday, 11 August
Overcast. High 92°, low 75°.
Pressure29.94 inHg
Wind8.4 mph SW
Humidity30%
Visibility6.2 mi
Dew point54°
Wed, 1290° / 73°0
90 °
South El Monte, Wednesday, 12 August
Clear. High 90°, low 73°.
Pressure29.88 inHg
Wind7.6 mph SW
Humidity35%
Visibility6.2 mi
Dew point56°
Thu, 1385° / 70°0
85 °
South El Monte, Thursday, 13 August
Clear. High 85°, low 70°.
Pressure29.91 inHg
Wind9.4 mph S
Humidity49%
Visibility—
Dew point57°
Fri, 1487° / 69°0
87 °
South El Monte, Friday, 14 August
Overcast. High 87°, low 69°.
Pressure29.97 inHg
Wind10.3 mph SW
Humidity46%
Visibility—
Dew point55°
Sat, 1586° / 72°0
86 °
South El Monte, Saturday, 15 August
Overcast. High 86°, low 72°.
Pressure30.00 inHg
Wind9.6 mph S
Humidity40%
Visibility—
Dew point54°
Sun, 1690° / 74°0
90 °
South El Monte, Sunday, 16 August
Light rain. High 90°, low 74°.
Pressure30.06 inHg
Wind10.6 mph SW
Humidity43%
Visibility—
Dew point57°
Mon, 1793° / 76°0
93 °
South El Monte, Monday, 17 August
Mostly clear. High 93°, low 76°.
Pressure30.00 inHg
Wind10.9 mph SW
Humidity36%
Visibility—
Dew point56°
Tue, 1897° / 77°0
97 °
South El Monte, Tuesday, 18 August
Overcast. High 97°, low 77°.
Pressure29.94 inHg
Wind11 mph SW
Humidity33%
Visibility—
Dew point56°
Wed, 19101° / 80°0
101 °
South El Monte, Wednesday, 19 August
Clear. High 101°, low 80°.
Pressure29.88 inHg
Wind10.3 mph SW
Humidity27%
Visibility—
Dew point55°
Thu, 2098° / 82°0
98 °
South El Monte, Thursday, 20 August
Overcast. High 98°, low 82°.
Pressure29.91 inHg
Wind10.1 mph SW
Humidity40%
Visibility—
Dew point62°
Fri, 21100° / 82°0
100 °
South El Monte, Friday, 21 August
Clear. High 100°, low 82°.
Pressure29.83 inHg
Wind9.8 mph SW
Humidity31%
Visibility—
Dew point58°
Sat, 2298° / 81°0.01
98 °
South El Monte, Saturday, 22 August
Light rain. High 98°, low 81°.
Pressure29.88 inHg
Wind9.4 mph SW
Humidity34%
Visibility—
Dew point58°
Sun, 23102° / 81°0
102 °
South El Monte, Sunday, 23 August
Partly cloudy. High 102°, low 81°.
Pressure29.91 inHg
Wind9.4 mph SW
Humidity33%
Visibility—
Dew point59°
Mon, 24105° / 83°0
105 °
South El Monte, Monday, 24 August
Clear. High 105°, low 83°.
Pressure29.88 inHg
Wind9.6 mph SW
Humidity31%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2589° / 65°0
89 °
South El Monte, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high89°
Average low65°
Average precipitation0 in
Chance of precipitation2%
Record high106° (1985)
Record low58° (1978)
Wed, 2690° / 66°0
90 °
South El Monte, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high105° (1981)
Record low58° (1990)
Thu, 2791° / 65°0
91 °
South El Monte, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high91°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high105° (1981)
Record low57° (1973)
Fri, 2891° / 66°0
91 °
South El Monte, Friday, 28 August
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high105° (1981)
Record low58° (1973)
Sat, 2992° / 67°0
92 °
South El Monte, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high105° (1967)
Record low58° (2010)
Sun, 3090° / 67°0
90 °
South El Monte, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high90°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high105° (1967)
Record low58° (2010)
Mon, 3189° / 66°0
89 °
South El Monte, Monday, 31 August
Climate normal for this date — 60-year average.
Average high89°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high106° (2017)
Record low58° (1992)
Tue, 0190° / 65°0.02
90 °
South El Monte, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high90°
Average low65°
Average precipitation0.02 in
Chance of precipitation3%
Record high106° (2017)
Record low58° (1964)
Wed, 0290° / 66°0.02
90 °
South El Monte, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0.02 in
Chance of precipitation5%
Record high106° (1982)
Record low54° (1964)
Thu, 0390° / 66°0
90 °
South El Monte, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0 in
Chance of precipitation5%
Record high109° (1988)
Record low57° (1964)
Fri, 0491° / 66°0
91 °
South El Monte, Friday, 4 September
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2022)
Record low58° (1964)
Sat, 0591° / 66°0.01
91 °
South El Monte, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high113° (2020)
Record low57° (1970)
Sun, 0690° / 66°0.01
90 °
South El Monte, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high116° (2024)
Record low56° (1970)
Mon, 0790° / 66°0
90 °
South El Monte, Monday, 7 September
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high105° (2024)
Record low56° (1965)
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 El Monte, 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 El Monte, 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.